April 2019 - Ffmpeg-devel-irc

ffmpeg-devel.log.20190404
by burek 05 Apr '19

05 Apr '19

[00:10:24 CEST] <nevcairiel> jamrial: i figured out why fate doesnt work on my windows boxes anylonger. Some of the helper routines that are now being used by more tests don't like windows-style absolute path syntax, and therefor screw everything up [00:11:13 CEST] <jamrial> nevcairiel: might have to change the test to not use transcode() then [00:11:20 CEST] <jamrial> i'll look at it later [00:11:21 CEST] <nevcairiel> its actually surprising this didnt blow up much sooner, but apparently TARGET_PATH wasn't used much [00:11:49 CEST] <nevcairiel> actually m aybe this can be fixed easier [00:12:12 CEST] <nevcairiel> transcode() wants to prepend TARGET_PATH and checks if its already there [00:12:16 CEST] <nevcairiel> but that check f ails on windows [00:12:25 CEST] <nevcairiel> so.. why not change the actual test to not have it there? [00:12:38 CEST] <nevcairiel> it'll just get added and not blow up [00:12:40 CEST] <nevcairiel> let me test [00:13:02 CEST] <nevcairiel> yup that works [00:15:20 CEST] <nevcairiel> i'll send to the ML [00:15:23 CEST] <jamrial> nice, thanks [00:17:15 CEST] <jamrial> i worry about the transcode() tests adding TARGET_SAMPLES then [00:18:09 CEST] <nevcairiel> its probably not just transcode [00:18:25 CEST] <nevcairiel> a lot of functions have that appending logic [00:18:33 CEST] <nevcairiel> but samples are not typically in TARGET_PATH [00:18:40 CEST] <nevcairiel> since thats the output directory [00:18:51 CEST] <nevcairiel> this one was special since it was generated by another test [00:20:11 CEST] <nevcairiel> TARGET_SAMPLES works because I have that setup with a relative path :D [00:20:31 CEST] <nevcairiel> iirc i did that because absolute-path on windows for that was entirely broken :) [00:20:57 CEST] <jamrial> yeah, i have to do the same [00:21:22 CEST] <nevcairiel> i forget why i didnt u se mingw-style path with /c/ instead of c:/ [00:21:28 CEST] <nevcairiel> but probably msvc stuff didnt liket hat [11:32:59 CEST] <cone-127> ffmpeg 03Michael Niedermayer 07master:8e3b01e20ebd: avcodec/agm: More completely check size before using it [12:41:50 CEST] <durandal_1707> michaelni: do you know way to get different(non-canonical) prefix codes from set of bit-lenghts? [13:12:34 CEST] <michaelni> iam not sure i understand the question, you can build a VERY large number of prefix codes from a list of lengths [13:19:56 CEST] <durandal_1707> michaelni: yes, but i know how for certain values code actually looks like [13:31:20 CEST] <michaelni> durandal_1707, i dont have a good solution i think. if its few codes a text editor or pencil and paper could be used to build the whole list of prefixes with a lot of guessing. once the patterm is obvious the rest could be done with code. I assume theres no simple table in the binary of these codes? [13:31:54 CEST] <michaelni> also of course you coukd hack the encoder (if available) to spit all codes out in sequence or feed special input to achieve the same [13:33:47 CEST] <michaelni> the decoder with some instrumentation decoding random things might also be useable to extract the codes but maybe iam misunderstanding the problem [13:35:58 CEST] <durandal_1707> i have codec that recreate huffman tree from set of 256 bit-lenghts [13:36:49 CEST] <michaelni> try if it matches any of our length -> prefix implementations [13:38:20 CEST] <durandal_1707> already did [13:46:04 CEST] <michaelni> ff_huff_build_tree() with custom HuffCmp might help, if you know how things in the tree are supposed to be ordered [13:51:30 CEST] <durandal_1707> isn't that for frequencies only? [13:53:22 CEST] <michaelni> you can use something like freq = 1<<len [13:54:36 CEST] <michaelni> rather freq = 1<<(max - len) [14:06:22 CEST] <durandal_1707> michaelni: does not work [14:32:30 CEST] <j-b> 'lo [14:33:35 CEST] <durandal_1707> alright [14:42:31 CEST] <kurosu> durandal_1707: I don't think you have another option than RE how the codewords are created [14:54:02 CEST] <kurosu> if it's not that dynamical, maybe you could dump the output and store them in a data file as codebooks [14:54:26 CEST] <kurosu> (though atypical for huffman codes) [15:09:44 CEST] <durandal_1707> it is dynamical [16:11:03 CEST] <JEEB> it seems like the C++ module in ghidra got open sauce'd? [22:57:12 CEST] <carton> Hello! Could you please add "#!/bin/sh" to ffbuild/libversion.sh. It doesn't work with busybox. Thank you. [00:00:00 CEST] --- Fri Apr 5 2019

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ffmpeg.log.20190404
by burek 05 Apr '19

05 Apr '19

[05:51:00 CEST] <cardz> Are there any tools out there to compare two videos, or to rate and score a video's quality on any number of factors [05:51:25 CEST] <cardz> The goal being to conclude that one video is "better" than another, and how much better. [05:55:24 CEST] <furq> cardz: https://ffmpeg.org/ffmpeg-filters.html#libvmaf [06:00:46 CEST] <cardz> furq: thanks. Do you know if this netflix lib is also ported to Windows? [13:41:55 CEST] <lemourin> Is it expected behavior that the result of conversion from rgb24 to yuv420p is platform dependent? [13:49:03 CEST] <JEEB> yes, there's some SIMD in there most likely [13:49:20 CEST] <JEEB> and SSE2 etc might give different results to plain C [13:54:01 CEST] <lemourin> JEEB: is there a way to make it platform independent? by e.g. disabling optimizations? [13:59:29 CEST] <JEEB> the tests utilize a bitexact flag [14:00:51 CEST] <JEEB> -sws_flags bitexact seems to be one [14:01:18 CEST] <lemourin> thanks, i'll try this out [14:29:30 CEST] <thebombzen> did kmsgrab ever get fixed on nVidia? [14:44:04 CEST] <ahmadjamalmughal> Hi. Is anyone here applying for GSoC? [14:50:13 CEST] <JEEB> ahmadjamalmughal: some people have popped up on the -devel channel, but I'm not sure how many mentors are on IRC [16:49:43 CEST] <zPhantomGG> hi [16:51:33 CEST] <zPhantomGG> Can someone answer me if this is a bug? http://phantsc.rf.gd/AAA/Bbb.html exactly in the second 7 [16:53:03 CEST] <zPhantomGG> using: 'ffmpeg.exe -i in.mp4 -vcodec copy -acodec aac -hls_list_size 0 -hls_segment_size 17000000 -f hls out.m3u8' [16:55:56 CEST] <zPhantomGG> someone? [16:58:10 CEST] <pink_mist> wait for people with knowledge in the area to respond [16:58:17 CEST] <pink_mist> (that does not include me) [17:00:24 CEST] <faLUCE> zPhantomGG: why do you see it as a bug? [17:00:37 CEST] <faLUCE> is your mp4 different? [17:05:03 CEST] <zPhantomGG> a video crash occurs. [17:05:26 CEST] <zPhantomGG> when going from segment0.ts to segment1.ts [17:06:15 CEST] <zPhantomGG> in the link I sent you can see clearly [17:07:25 CEST] <zPhantomGG> I'm trying to get m3u8 with bytesranges, and each segment with a maximum size [17:07:33 CEST] <zPhantomGG> not a size exactly, but approximate [17:07:55 CEST] <zPhantomGG> so I use: -hls_segment_size [17:09:32 CEST] <w1kl4s> it does? [17:10:26 CEST] <faLUCE> zPhantomGG: with which criterium did you set hls_segment_size to 17000000 ? [17:11:15 CEST] <zPhantomGG> for each segment to have an approximate size [17:11:44 CEST] <zPhantomGG> ~17MB [17:11:45 CEST] <faLUCE> zPhantomGG: ok, but why did you choose the value 17000000 ? [17:11:57 CEST] <faLUCE> did you try with another value? [17:11:59 CEST] <zPhantomGG> https://github.com/FFmpeg/FFmpeg/blob/9461e4bc694b8d95d4224226b9781f8166d96… [17:12:13 CEST] <zPhantomGG> yes [17:12:36 CEST] <faLUCE> also with very different values? [17:12:36 CEST] <zPhantomGG> this video in the link that I sent, was with a lower value [17:12:53 CEST] <faLUCE> for example: 1 Mb [17:13:00 CEST] <faLUCE> or even less [17:13:40 CEST] <zPhantomGG> even different values, this always happens in the video, when it goes from one segment to the other [17:15:55 CEST] <faLUCE> zPhantomGG: I would suggest you to re-encode with the same codec, but not with a copy [17:16:13 CEST] <faLUCE> and then mux again with the same segment val and see what happens [17:22:04 CEST] <zPhantomGG> Like this ? -vcodec libx264 -acodec aac -hls_list_size 0 -hls_segment_size 1000000 -f hls [17:23:04 CEST] <faLUCE> yes [17:23:19 CEST] <zPhantomGG> the same thing happens [17:24:18 CEST] <faLUCE> zPhantomGG: try to mute the audio codec [17:24:26 CEST] <faLUCE> -acodec none [17:24:31 CEST] <zPhantomGG> ok [17:24:59 CEST] <zPhantomGG> Unknown encoder 'none' [17:25:10 CEST] <faLUCE> -an or something like that [17:28:06 CEST] <zPhantomGG> -vcodec libx264 -an -hls_list_size 0 -hls_segment_size 1000000 -f hls [17:28:25 CEST] <zPhantomGG> The same thing happens, the video hangs [17:29:15 CEST] <faLUCE> and you don't hear the audio, right? [17:29:49 CEST] <zPhantomGG> no audio, I can see the video hang [17:29:55 CEST] <faLUCE> ok, wait [17:34:09 CEST] <faLUCE> zPhantomGG: [hls @ 0x5602e0a4b380] Cannot use rename on non file protocol, this may lead to races and temporary partial files [17:35:54 CEST] <zPhantomGG> I did not understand.. [17:38:11 CEST] <DHE> the traditional method of writing your new files to a .tmp file and then rename() it to the proper name for an atomic content update doesn't work if you're doing, say, direct HTTP PUT uploads [17:41:25 CEST] <zPhantomGG> I am not uploading via HTTP PUT ... [17:48:19 CEST] <faLUCE> zPhantomGG: https://docs.peer5.com/guides/production-ready-hls-vod/ [18:00:26 CEST] <zPhantomGG> I already saw this tutorial [18:00:29 CEST] <zPhantomGG> I'm looking to make an m3u8 file that has byte range [18:00:56 CEST] <zPhantomGG> without using '-hls_flags single_file' [18:01:43 CEST] <zPhantomGG> but I also want to set an approximate size for each segment [18:06:17 CEST] <zPhantomGG> it's probably some problem with '-hls_segment_size' [18:06:18 CEST] <zPhantomGG> alguém tem uma ideia alternativa? [18:06:24 CEST] <zPhantomGG> Does anyone have an alternative idea? [18:11:18 CEST] <kevinnn> does anyone know how to properly handle a 60fps h264 network stream that has sliced NAL units? Previously I would just render after each NAL unit was received with libav but not that they are sliced there are actually much more than 60 NAL units coming in per second on a 60fps stream [18:48:29 CEST] <poisond> hi :) I'm having problems with nvenc since a recent update: https://pastebin.ubuntu.com/p/S4mMKgKQT3/ ... is this a known problem? Any workaround? [18:50:39 CEST] <JEEB> that really says nothing :D [18:51:36 CEST] <JEEB> initialized successfully and then unloaded [18:55:02 CEST] <poisond> JEEB: sorry, here's with an actual file https://pastebin.ubuntu.com/p/dnZSmYp2px/ [18:55:28 CEST] <JEEB> [hevc_nvenc @ 0x55f55b535500] OpenEncodeSessionEx failed: out of memory (10) [18:55:36 CEST] <JEEB> so you're trying to do 5 encodes [18:55:42 CEST] <JEEB> due to teh cover art in there :P [18:56:16 CEST] <JEEB> I think nvidia tells you to eff off if it's like over 2 or 4 [18:56:20 CEST] <JEEB> in the driver [18:56:28 CEST] <JEEB> unless you patch the driver to remove that limit [18:57:36 CEST] <netkam2> can I record a command line only with ffmpeg [19:00:57 CEST] <poisond> JEEB: ok, never encountered this before O_o so nvenc doesn't like multiple video stream? [19:01:08 CEST] <poisond> JEEB: or is it the format it's complaining about? [19:02:34 CEST] <poisond> I can transcode with -map 0:v:0 [19:02:50 CEST] <JEEB> poisond: it's the amount of encodes being done at a time :P [19:03:02 CEST] <JEEB> the driver has a hard-coded limit for normal customer cards [19:04:12 CEST] <poisond> JEEB: OK, thanks, that solved my problem! (still confuses me since I tend to do parallel transcodes using nvenc) [19:04:57 CEST] <JEEB> you can do multiple, but in this case you were doing 5 [19:05:16 CEST] <JEEB> which I think is more than nvidia lets you do at once [19:06:23 CEST] <JEEB> https://developer.nvidia.com/video-encode-decode-gpu-support-matrix [19:06:30 CEST] <JEEB> poisond: ^ see this [19:07:01 CEST] <JEEB> so for GTX 1080 it's one chip and 2 instances per chip [19:07:20 CEST] <JEEB> and then max concurrent sessions is 2 [19:07:31 CEST] <JEEB> that's of course a 100% driver limitation :P [19:07:50 CEST] <JEEB> nvidia wants you to pay more moneys for a quadro if you want more encodes at once [19:08:23 CEST] <poisond> oh, only need to shelf out a few thousand bucks to do 3 parallel, that's quite generous of them to allow 2 on consumer cards then xD [19:16:31 CEST] <nicolas17> can I make ffmpeg only decode intra frames? I'm speeding up a video like 60x and decoding the input is the bottleneck, it seems to be decoding every frame and then dropping most of them [19:18:12 CEST] <JEEB> nicolas17: with the API you could do that, not sure if you can drop with the command line app [19:22:42 CEST] <nicolas17> ok I think I can download the input file to my 4-core PC faster than I can transcode on my 1-shared-core VPS :/ [19:27:55 CEST] <kevinnn> I am getting this warning while using ffmpeg [19:27:56 CEST] <kevinnn> chroma_format_idc 10 is not implemented [19:28:11 CEST] <kevinnn> is it necessary to update ffmpeg in this case? [19:29:22 CEST] <kevinnn> google literally returns this for a search on the internet [19:29:30 CEST] <kevinnn> "No results found for "chroma_format_idc 10 is not implemented"." [19:31:26 CEST] <kevinnn> which means I am the first human to have this issue? [19:31:40 CEST] <nicolas17> what version of ffmpeg? [19:31:46 CEST] <JEEB> is that HEVC or AVC? [19:32:23 CEST] <kevinnn> JEEB: AVC [19:32:38 CEST] <kevinnn> nicolas17: whatever the latest version debian stretch offers [19:32:49 CEST] <kevinnn> I am using the libraries not ffmpeg directly [19:33:12 CEST] <JEEB> should quickly check if it's logging it as bits [19:33:16 CEST] <JEEB> or as a value [19:33:20 CEST] <JEEB> like, is 10 3 [19:33:22 CEST] <JEEB> or is it 10 [19:33:30 CEST] <JEEB> because 3 makes sense [19:33:33 CEST] <JEEB> 10 less so [19:34:00 CEST] <kevinnn> it shows 10 [19:34:08 CEST] <kevinnn> I am not even sure what that means to be honest [19:34:48 CEST] <JEEB> ok, so it's really 10 [19:34:59 CEST] <JEEB> just looked at the place where it logs where it requests a sample [19:35:09 CEST] <JEEB> if it's more than 3 it logs that out [19:35:21 CEST] <JEEB> let's see if that value makes any sense according to the specification :) [19:36:28 CEST] <kevinnn> JEEB: hmm, okay but what exactly does it mean? [19:36:39 CEST] <JEEB> "chroma_format_idc shall be in the range of 0 to 3, inclusive." [19:36:43 CEST] <JEEB> according to the specification [19:36:53 CEST] <JEEB> "chroma_format_idc specifies the chroma sampling relative to the luma sampling as specified in clause 6.2." [19:36:54 CEST] <nicolas17> so your input file is corrupted or otherwise not conforming [19:37:08 CEST] <nicolas17> i guess [19:37:26 CEST] <kevinnn> oh okay, weird, why is my input file like that? It plays just fine on other decoders [19:37:38 CEST] <kevinnn> well specifically openmax IL [19:37:50 CEST] <JEEB> hw decoders anyways expect chroma_format_idc 1 [19:37:58 CEST] <JEEB> (or no value which is same as 1) [19:38:10 CEST] <kevinnn> this is a software decoder [19:38:11 CEST] <JEEB> which is 4:2:0 video [19:38:22 CEST] <JEEB> kevinnn: anyways I guess quickest way to check is to get a sample [19:38:35 CEST] <JEEB> but the initial guesstimate is that the stream is in some way corrupted [19:38:40 CEST] <kevinnn> okay let me see... [19:39:37 CEST] <nicolas17> ok no, looks like my slow VPS will finish encoding before my slow home internet finishes downloading input -.- [19:48:42 CEST] <kevinnn> JEEB: https://www.mediafire.com/file/kthp42ahfzouy0h/output/file [19:48:49 CEST] <kevinnn> this is that first packet [19:48:57 CEST] <kevinnn> does it look corrupt? [19:49:20 CEST] <JEEB> annex b? [19:49:26 CEST] <kevinnn> yes [20:02:15 CEST] <kevinnn> JEEB: is it super corrupt? [20:03:35 CEST] <JEEB> kevinnn: I'm trying to get some food etc [20:04:01 CEST] <kevinnn> JEEB: okay sorry, didn't mean to bother you [20:41:00 CEST] <kevinnn> can anyone else take a look at my first frame? [23:30:32 CEST] <TheSashmo> anyone know if there is a way to apply biss code to a file after its been recorded? I have the ecnrypted file and the biss key [00:00:00 CEST] --- Fri Apr 5 2019

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ffmpeg-devel.log.20190403
by burek 04 Apr '19

04 Apr '19

[00:11:36 CEST] <jamrial> jkqxz: regarding my review, something like https://pastebin.com/HmCgZ1mm (on top of your set) [00:36:27 CEST] <durandal_1707> kurosu: codes are static - and there are many combinations for same set of bitlengths [00:55:07 CEST] <cone-185> ffmpeg 03James Almer 07master:0e1ea034d8fc: avcodec/libaomenc: fix range of values for enable-intrabc option [04:18:25 CEST] <cone-385> ffmpeg 03Jun Zhao 07master:ecb4398d71c9: lavf/hashenc: Correct the hash/MD5 muxer class name [07:34:53 CEST] <cone-698> ffmpeg 03Gyan Doshi 07master:b131a07e4bf9: fate: unbreak fate with custom binary names [11:01:41 CEST] <pridkett> what is cehoyos 's irc name [11:02:05 CEST] <JEEB> exactly that, but he is on IRC very rarely [11:02:21 CEST] <pridkett> cehoyos closed my ticket for no reason [11:02:33 CEST] <JEEB> comms with him is mostly through e-mail (ML or private) [11:02:40 CEST] <JEEB> or the issue tracker, yes [11:02:56 CEST] <pridkett> jeeb is jeeb also your trac nasme? [11:02:59 CEST] <durandal_1707> do not spamm trac with useless bug reports [11:03:04 CEST] <JEEB> pridkett: yes? [11:03:26 CEST] <pridkett> durandal_1707 why would you say it's useless [11:03:43 CEST] <JEEB> he doesn't even know what you're talking about:P and neither do I [12:21:16 CEST] <cone-698> ffmpeg 03Gyan Doshi 07master:8161ac290283: lavf/movenc: fix tmcd writing for non-MP4/MOV modes [16:50:19 CEST] <durandal_1707> can i traverse(preorder/inorder/postorder) binary tree represented with array? [17:00:31 CEST] <cone-325> ffmpeg 03Zhong Li 07master:6f9d7c556d5f: lavc/qsvenc: no need to include h264.h for jpeg encoder [17:00:32 CEST] <cone-325> ffmpeg 03Zhong Li 07master:c745bedd18af: lavc/qsvenc: enable hevc coding options configuration [17:00:33 CEST] <cone-325> ffmpeg 03Zhong Li 07master:1125277bc64e: lavc/qsvenc: enable hevc gpb option [18:48:30 CEST] <thardin> oh joy av1 patent trolls are coming out of the woods [18:53:04 CEST] <BBB> samsung is not a troll? [18:53:18 CEST] <BBB> (I know, you mean sisvel :-p) [18:54:30 CEST] <nevcairiel> i'm sure every sufficiently large company has done some patent trolling in their time [19:02:17 CEST] <durandal_1707> can i traverse(preorder/inorder/postorder) binary tree represented with array? [23:14:55 CEST] <cone-424> ffmpeg 03James Almer 07master:ee16d14b0a29: avcodec/av1_metadata: add an option to remove Padding OBUs [23:15:40 CEST] <durandal_1707> why i get same output for different binary tree traversals? [00:00:00 CEST] --- Thu Apr 4 2019

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ffmpeg.log.20190403
by burek 04 Apr '19

04 Apr '19

[00:00:31 CEST] <bugre> faLUCE: i would like to stop ffprobe after a certain amount of time (or frames if that helps). I'm trying to automate some checkings on GOP, bitrate on our livestreams. [00:08:47 CEST] <fella> -read_intervals [00:10:09 CEST] <pridkett> let's say if i have IP 24.111.111.100 and let's say my neighbor who use same ISP as me has IP 24.111.111.105 : if somebody DDOS my ip 24.111.111.100 , obviously i would go offline, but would my neighbor go offline as well? [00:29:38 CEST] <friendofafriend> pridkett: I think you're in the wrong channel, maybe ##networking instead? [00:29:48 CEST] <pridkett> okay [01:19:11 CEST] <bugre> fella: Thank you, you're the man!! '-read_intervals' worked. [01:19:28 CEST] <bugre> I would never have found this one alone. [04:56:33 CEST] <nitrxgen> just a message of appreciation for ffmpeg, idk how i would ever manipulate videos as easily as this [06:37:42 CEST] <while> hi [06:42:08 CEST] <while> is rfc3533 the rfc implemented by ffmpeg when encoding OGG files? [08:26:32 CEST] <pridkett> what is the command to put just the audio test.ac3 to .mp4 container file? [08:27:13 CEST] <pridkett> what is the command to put just the audio "test.ac3" to "test.mp4" container file? [08:43:43 CEST] <JEEB> pridkett: ffmpeg -i test.ac3 -c copy test.mp4 [08:43:57 CEST] <pridkett> thanks [08:45:40 CEST] <pridkett> wow that caused ffmpeg to crash [08:45:57 CEST] <pridkett> never seen that befnore [09:23:17 CEST] <pridkett> i get this error " add '-strict -2' if you want to use it" but if i add it i get this error "Unable to find a suitable output format for 'strict -2' [09:23:17 CEST] <pridkett> strict -2: Invalid argument" [11:07:07 CEST] <azy> how can i overlay an mp3 to an mp4 at a specific time? [11:07:48 CEST] <tanja77> hi. I got many surveillance videos (about animals im my garden). does anyone know of a software that could "inspect" all these MANY videos and look on differences so that I could "catch" the animal automatically instead of watching all videos? [11:08:05 CEST] <tanja77> (I am actually watching them via avidemux with more speed, but its a pain anyway) [11:08:43 CEST] <pridkett> azy what does the mp4 file have [11:09:10 CEST] <azy> video+audio [11:09:17 CEST] <pridkett> azy which codec [11:09:35 CEST] <pridkett> tanja77 what is your obsession with animals on your surveillnace video [11:10:13 CEST] <azy> ive no idea [11:10:19 CEST] <pridkett> ffprobe it then [11:10:44 CEST] <azy> http://paste.debian.net/hidden/6e705203/ [11:11:44 CEST] <pridkett> does mp3 and mp4 have matching timeline? [11:11:49 CEST] <pridkett> does mp3 and aac have matching timeline? [11:13:19 CEST] <tanja77> pridkett, no obsession. its because the animals leaves its "rests" on our balkony and we want to know what kind of animals it is [11:13:38 CEST] <pridkett> rests? [11:13:45 CEST] <tanja77> for example we would have to treat a dormouse different like a mouse or so, right? [11:14:04 CEST] <tanja77> had to google this translation: [11:14:05 CEST] <tanja77> feces [11:14:08 CEST] <tanja77> :-) [11:14:11 CEST] <pridkett> i see [11:14:32 CEST] <pridkett> azy: Dude\ Asks\ Girl\ To\ The\ Prom\ But\ Showed\ Up\ To\ The\ Wrong\ House\!-video.mp4 that's a weird file name [11:14:49 CEST] <azy> no @ matching timeline [11:14:54 CEST] <azy> http://worldstarhiphop.com/videos/video.php?v=wshh8k7r15F4hBKA88lv [11:14:57 CEST] <azy> its hilarious [11:14:59 CEST] <pridkett> why do you have such a weird file name [11:15:01 CEST] <tanja77> so in the first place its just about knowing who the offender is ;-) [11:15:45 CEST] <pridkett> azy it's not even funny [11:15:47 CEST] <pridkett> i just watched [11:16:06 CEST] <pridkett> azy so what mp3 file you want to overlay? [11:20:35 CEST] <azy> http://paste.debian.net/hidden/76eda90b/ [11:20:50 CEST] <pridkett> tanja77 sorry not sure how ffmpeg can detect animals [11:21:05 CEST] <azy> needs to detect motion [11:21:19 CEST] <azy> https://motion-project.github.io/ [11:21:41 CEST] <pridkett> there are face recognition [11:21:43 CEST] <azy> any surveillance software should do it [11:21:58 CEST] <pridkett> azy and what is the link you got the Curb\ Your\ Enthusiasm\ Theme-Ag1o3koTLWM.webm [11:22:30 CEST] <azy> https://www.youtube.com/watch?v=Ag1o3koTLWM [11:22:45 CEST] <azy> i could get a different format with youtube-dl if needed [11:22:58 CEST] <pridkett> azy webm is fine [11:23:02 CEST] <pridkett> ffmpeg handles it [11:23:21 CEST] <pridkett> azy are you trying to edit the video and upload to youtube? [11:23:29 CEST] <azy> ye [11:23:39 CEST] <pridkett> azy what is your youtube name [11:24:47 CEST] <azy> https://www.youtube.com/user/0xstev3/videos [11:25:59 CEST] <pridkett> 308 subscribers NOT bad for having only crappy videos [11:27:13 CEST] <pridkett> azy at what time/point does Curb\ Your\ Enthusiasm\ Theme-Ag1o3koTLWM.webm wants to join in [11:29:35 CEST] <azy> 0:07 [11:31:04 CEST] <pridkett> extract the audio file from mp4 [11:31:41 CEST] <pridkett> ffmpeg -i input1.webm -i input2.aac -filter_complex amerge -ac 2 -c:a libmp3lame -q:a 4 output.mp3 [11:33:31 CEST] <pridkett> azy why are you hiding your version [11:34:40 CEST] <azy> so i dont get haked [11:34:49 CEST] <azy> whats the second -i meant to represent? [11:37:05 CEST] <tanja77> pridkett, yes, I did not think of ffmpeg could do this LOL.. but I thought in an ffmpeg channel there could be perhaps persons that know other software or so [11:37:19 CEST] <pridkett> tanja77 fair enough [11:38:21 CEST] <pridkett> azy 99% people in freenode reveals version info [11:38:36 CEST] <pridkett> that doesn't mean 99% people are getting hacked [11:39:04 CEST] <azy> i was expecting something like: ffmpeg -i video.mp4 -i audio.webm -uwotm8 3:40 [11:39:51 CEST] <relaxed> tanja77: I think zoneminder would work (uses ffmpeg on the backend) [11:40:56 CEST] <tanja77> just downloading zoneminder... [11:41:08 CEST] <relaxed> for monitoring, not going over your past video [11:41:16 CEST] <tanja77> ah, I see [11:44:45 CEST] <relaxed> tanja77: maybe this? https://www.home-assistant.io/components/binary_sensor.ffmpeg_motion/ [11:45:41 CEST] <tanja77> this looks cook, I am gonna check this [11:45:57 CEST] <tanja77> ps: you guys see: I AM in the right channel ;-) thanks & kisses [11:47:43 CEST] <pridkett> hi i am doing a survey: what gender/age do you think the person on this youtube video is based on their voice: https://www.youtube.com/watch?v=hMynODL4GtQ [11:51:42 CEST] <azy> 14 [11:51:59 CEST] <pridkett> azy thanks and gender? [11:52:23 CEST] <azy> male [11:52:34 CEST] <azy> plus "ron fetter" [11:53:36 CEST] <pridkett> is Ron, a guy only name? [12:34:49 CEST] <JEEB> pk08: please stop privately messaging me [12:35:25 CEST] <pk08> ok, i dont see anything related to ttl in doc/example [12:35:27 CEST] <JEEB> there's an AVOption for ttl in the UDP protocol, set that through av_dict_set to your avformatcontext (or IO one, don't remember) [12:35:30 CEST] <JEEB> of course not [12:35:44 CEST] <JEEB> they are just examples on how to *set* *options* [12:36:11 CEST] <JEEB> when you set the options you will get back a list of options that were not applied [12:36:18 CEST] <JEEB> that way you can figure out if your options got applied or not [12:53:57 CEST] <pk08> thanks JEEB [14:19:27 CEST] <miyalys> Hi! I'm trying to record audio out and video simultaneously, via ffmpeg and an alsa loopback device. this command runs, but strangely the audio is only heard for maybe half a second (sounding like it should for that duration) and then it disappears? [14:19:49 CEST] <miyalys> The command: ffmpeg -f x11grab -framerate 25 -video_size 1920x1080 -i :0.0 -f alsa -i "plug:\"dsnoop:Loopback,1\"" screencast.mkv [14:21:22 CEST] <miyalys> Not sure if the solution is alsa or ffmpeg related, but recording just the audio separately, also with ffmpeg, it plays back just fine. [15:06:27 CEST] <blueman24> Hello, i trying to compile ffmpeg like this "PKG_CONFIG_PATH=/usr/local/src/ffmpeg/lib/pkgconfig ./configure --prefix=/opt/ffmpeg --extra-cflags=-I/opt/ffmpeg/include --extra-ldflags=-L/opt/ffmpeg/lib --pkg-config-flags=--static --bindir=/opt/ffmpeg/bin --enable-openssl --enable-gpl --enable-nonfree --enable-libfreetype --enable-libtheora --enable-libvpx --enable-libx264 --enable-libx265" [15:06:35 CEST] <blueman24> i got error "ERROR: freetype2 not found" [15:06:49 CEST] <blueman24> any thoughts? [15:09:03 CEST] <pink_mist> try installing freetype2 [15:09:09 CEST] <pink_mist> and its development headers [15:09:43 CEST] <blueman24> yum search freetype2 does not exist [15:10:03 CEST] <blueman24> I installed freetype-devel [15:10:57 CEST] <pink_mist> well, as long as the version of that is >=2, it should be fine [15:13:15 CEST] <blueman24> my version is: 2.8 [15:19:46 CEST] <miyalys> update on my issue: Switching to a native codec solved my problem of desyncing: ffmpeg -f alsa -i "plug:\"dsnoop:Loopback,1\"" -f x11grab -r 24 -s 1920x1080 -i :0.0 -acodec aac -vcodec mpeg4 -preset medium -qscale:v 5 rec.mkv [18:42:05 CEST] <retal> faLUCE, hi. Couple days ago you sent me message, sorry I didn't answer . Was very busy [19:54:36 CEST] <King_DuckZ> hi, in my program I want to generate output that is readable by ffmpeg's pipe input, from a full black frame for example I generate this https://alarmpi.no-ip.org/kamokan/fk?colourless (cut to 20 lines) [19:55:29 CEST] <King_DuckZ> then I run ffmpeg -i frame.y4m -r 1/1 deleme.bmp, but the resulting bmp image is not black not a uniform colour [19:57:19 CEST] <King_DuckZ> deleme.bmp --> https://alarmpi.no-ip.org/kamokan/fl?colourless (cut to 30 lines) [20:02:33 CEST] <King_DuckZ> ah fck it's interleaved, damn how did I not realize sooner [20:02:51 CEST] <King_DuckZ> sorry, I see how to fix it now [21:18:11 CEST] <faLUCE> hey retal ;-) [22:49:22 CEST] <mekeor> hello. how to convert a video to MP4 (H.264) with 8 bit depth? i tried `ffmpeg -i input.mxf -c:v libx264 -preset superfast -x264opts bit_depth=8 -c:a copy -map 0 output.mp4` because i didn't see a direct way to set the bit depth but this x264-option doesn't exist [22:50:04 CEST] <JEEB> for the basic way there's just -pix_fmt yuv420p [22:50:23 CEST] <JEEB> but since you're dealing with MXF you probably want a high quality conversion [22:50:33 CEST] <JEEB> I recommend building FFmpeg with zimg to get the zscale filter [22:50:51 CEST] <JEEB> then you can do -vf "zscale=m=709,format=pix_fmts=yuv420p" [22:51:07 CEST] <JEEB> the parameter to zscale might be unnecessary in your case [22:51:12 CEST] <mekeor> how could i find out that yuv420p has 8 bit depth if you wouldn't tell me? [22:51:50 CEST] <JEEB> I think in the API it has that property, and then you get a long list through -pix_fmts in ffmpeg.c [22:52:19 CEST] <JEEB> http://up-cat.net/p/db50f53b [22:52:21 CEST] <JEEB> a bit of it [22:52:41 CEST] <BtbN> Well, it's an 8 bit pixel format by itself [22:52:49 CEST] <BtbN> 10 or 12 bit ones are named accordingly [22:53:09 CEST] <JEEB> and yes, usually if not mentioned otherwise, it's 8bit per channel by default [22:53:41 CEST] <mekeor> cool, thank you! [22:53:44 CEST] <mekeor> so, specifying yuv420p should be enough but the zscale option would help keep high quality, right? [22:54:02 CEST] <mekeor> thank you ver much for your quick help :) [22:54:27 CEST] <JEEB> not sure how much difference in pure bit depth reduction there is [22:54:48 CEST] <BtbN> I'd say hardly any. [22:54:56 CEST] <JEEB> mostly dithering I guess? [22:55:07 CEST] <JEEB> which is minor [22:55:22 CEST] <BtbN> Don't you dither when going from 8 to 10 or 12, not the other way? [22:55:35 CEST] <BtbN> hm, no, nvm [22:55:41 CEST] <JEEB> no, dithering is usually done to get a better result from less bits [22:56:47 CEST] <mekeor> hmm. it seems like i'm missing some codecs... http://sprunge.us/ClPCJr [22:58:08 CEST] <mekeor> oh, seems like that error is due to the audio stuff [22:58:11 CEST] <JEEB> yes [22:58:18 CEST] <mekeor> hmm. i was trying to keep all audio-tracks [22:58:29 CEST] <JEEB> raw audio is possible in mp4 but not sure how much was implemented [22:58:35 CEST] <JEEB> that's a really fringe thing [22:59:52 CEST] <mekeor> raw audio? [23:00:02 CEST] <JEEB> yes, the audio is raw pcm [23:00:08 CEST] <JEEB> as opposed to being compressed [23:00:40 CEST] <mekeor> and you can only have multiple tracks of audio if it's raw pcm? [23:00:46 CEST] <JEEB> no? [23:01:01 CEST] <mekeor> sorry, i didn't understand you then :D [23:01:05 CEST] <JEEB> I'm saying the version of FFmpeg you have at least can't figure out which identifier to put into mp4 to put raw audio into it :P [23:01:13 CEST] <JEEB> thus the "codec not currently supported in container" [23:02:46 CEST] <mekeor> hmm, so might there be a solution without compiling ffmpeg on my own? [23:03:14 CEST] <JEEB> you can use an audio format that FFmpeg can write into mp4 [23:03:29 CEST] <JEEB> or switch from mp4 to another container [23:04:35 CEST] <mekeor> ah, okay, specifying aac works [23:05:16 CEST] <mekeor> but in the input-file there is a "Data: none" stream and thus ffmpeg complains that the codec "none" is not supported [23:05:47 CEST] <JEEB> yes, it's vanc data. [23:06:02 CEST] <JEEB> which is exported with a data_type but there's no codec id for it :P [23:06:16 CEST] <mekeor> so i need to map it, right? [23:06:21 CEST] <JEEB> no [23:06:29 CEST] <JEEB> most likely you don't get anything useful out of it with ffmpeg.c [23:06:37 CEST] <JEEB> whatever SMPTE 436M VANC is :P [23:07:23 CEST] <mekeor> so i need to tell ffmpeg to ignore that stream? [23:07:28 CEST] <JEEB> yes [23:07:41 CEST] <JEEB> seems like support was added to be able to copy those streams from MXF to MXF [23:07:47 CEST] <JEEB> but nothing at all otherwise :P [23:08:14 CEST] <mekeor> ah okay :D [23:08:25 CEST] <mekeor> i hope i won't miss those data [23:08:30 CEST] <JEEB> http://mogurenko.com/2015/10/30/closed-captions-and-mxf/ [23:08:39 CEST] <JEEB> seemingly closed captions [23:10:48 CEST] <mekeor> okay, cool, i specified `-map 0:v -map 0:a`& let's see =) [23:12:11 CEST] <JEEB> I guess if you actually read the caption data from the MXF packets you could export it as a captions track since FFmpeg has a decoder for it [23:12:23 CEST] <JEEB> but then you'd have to add re-packaging code on the other side (writing MXF) [23:12:37 CEST] <JEEB> which currently just happens to work because nothing is done to the data xD [23:19:56 CEST] <mekeor> actually i could also use `-map 0` for MXF-to-MTS conversion [23:20:13 CEST] <JEEB> not sure what it did with the data track for the record :P [23:20:26 CEST] <JEEB> since most likely it did *nothing* to the packets, which are valid in MXF [23:20:31 CEST] <JEEB> but not necessarily in MPEG-TS [23:20:50 CEST] <JEEB> and most likely MPEG-TS lets you send out arbitrary data as Data streams [23:20:51 CEST] <JEEB> :P [23:21:03 CEST] <JEEB> as in, the FFmpeg writer [23:40:13 CEST] <mekeor> thank you very much, JEEB and BtbN :) [23:40:27 CEST] <mekeor> i got done what i was aiming to do :) [00:00:00 CEST] --- Thu Apr 4 2019

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ffmpeg-devel.log.20190402
by burek 03 Apr '19

03 Apr '19

[00:14:00 CEST] <BtbN> Fenrirthviti, try turning on aud, I vaguely remember that being important for the cbr padding [00:14:27 CEST] <Fenrirthviti> Hm, ok, I'll check in to that [00:14:37 CEST] <BtbN> There was a commit fixing the padding, ages ago [00:14:40 CEST] <BtbN> but I can't find it [00:15:15 CEST] <Fenrirthviti> I found a param in their headers for uhh [00:15:40 CEST] <Fenrirthviti> outputPictureTimingSEI, which is required for CBR to work properly if I read it right? [00:15:56 CEST] <Fenrirthviti> we also have outputAUD set to 1 [00:16:05 CEST] <BtbN> yes, the TimingSEI definitely is required [00:16:16 CEST] <BtbN> for whatever reason, that's what they bound the padding to [00:16:29 CEST] <Fenrirthviti> yeah digging through this has been super fun. [00:16:50 CEST] <BtbN> outputBufferingPeriodSEI and outputPictureTimingSEI need to be set for it to work, yeah [00:16:53 CEST] <BtbN> and they are [00:17:36 CEST] <nevcairiel> so that explains why those got turned on without me explicitly asking for them [00:17:46 CEST] <Fenrirthviti> I see that we're setting that, but not outputAUD actually [00:18:04 CEST] <BtbN> I don't think outputAUD was one of the magical padding settings [00:18:23 CEST] <Fenrirthviti> ah, ok. [00:18:25 CEST] <nevcairiel> i can see the buffering/timing SEIs being related to m ake a proper CBR stream [00:18:29 CEST] <nevcairiel> AUD is just unrelated [00:18:58 CEST] <Fenrirthviti> Just frustrating that nvidia is telling us that there are "too many uses cases where CBR not being CBR is useful" [00:19:13 CEST] <nevcairiel> well there are [00:19:23 CEST] <BtbN> https://github.com/FFmpeg/FFmpeg/commit/3a9df7dfec89fadfee9e814e6adb2706908… [00:19:57 CEST] <Fenrirthviti> alright, I wonder if there's some kind of logic mixup here then https://github.com/obsproject/obs-studio/blob/5d83e1aec42c39f524b1c8681ea6d… [00:20:13 CEST] <BtbN> I do still wonder why this jim-nvenc thing ever became a thing in the first place [00:20:22 CEST] <BtbN> I don't see the advantage of duplicating it into OBS [00:20:35 CEST] <Fenrirthviti> on-GPU encode is why [00:20:36 CEST] <BtbN> It was added to implement d3d11 surface input, which ffmpeg can also do. [00:20:45 CEST] <Fenrirthviti> not sure past that [00:20:47 CEST] <BtbN> nevcairiel, added that ages ago [00:21:15 CEST] <Fenrirthviti> This issue is still present in the version of ffmpeg we ship, fwiw (the bitrate padding issue) [00:21:26 CEST] <nevcairiel> i found that while googling for some nvenc information, and i also wondered why it was seperate [00:21:31 CEST] <Fenrirthviti> It's actually more pronounced in the ffmpeg nvenc than ours [00:21:36 CEST] <nevcairiel> but i also know how such projects are [00:21:43 CEST] <nevcairiel> trying to improve upstream is effort, better clone i t [00:21:48 CEST] <BtbN> So the only reason OBS duplicated mass amounts of code is because Jim didn't know nvenc in FFmpeg can take d3d11 surfaces [00:22:15 CEST] <Fenrirthviti> Could be, yeah. You'd have to ask him. [00:22:55 CEST] <BtbN> anyway, ffmpeg does set the relevant flags, anything beyond that is out of our control [00:23:08 CEST] <nevcairiel> the CBR flags have also been set since like 2016 [00:23:11 CEST] <Fenrirthviti> yeah, I'm reasonably sure this is a nvidia problem as this point [00:23:16 CEST] <nevcairiel> if OBS ffmpeg is older then that, you are in trouble anyway [00:23:27 CEST] <Fenrirthviti> I have a post from you in 2014 saying that nvidia doesn't do padding as well, heh [00:23:47 CEST] <nevcairiel> All I know is that I did a bunch of test encodes last week, and the bitrate came out perfect [00:23:53 CEST] <BtbN> That was before someone at OBS found those magic two parameters that did enable padding [00:23:56 CEST] <Fenrirthviti> It's not, no, we're on some commit in 4 I can't recall off the top of my head [00:24:00 CEST] <BtbN> they were not documented to do so at that point in time [00:24:03 CEST] <nevcairiel> but it was mostly live action movies or tv show content, so no still images or animations, so shrug [00:24:27 CEST] <Fenrirthviti> yeah, it's really only noticeable with static images or very simple animations [00:24:34 CEST] <Fenrirthviti> but easily replicable [00:24:57 CEST] <Fenrirthviti> I appreciate the insight, I don't think it's a bug, I'm just trying to factfind so I can have the most informed conversation with them about it [00:25:14 CEST] <jkqxz> jamrial: What AV1 patches should I be looking at? [00:26:38 CEST] <jkqxz> jamrial: I also hacked in a way to do the parser change you suggested, but it's pretty horrible. I'll send it in a bit and you can see what you think. [00:27:49 CEST] <jamrial> jkqxz: the set i pinged during the weekend, starting with "add support for Padding OBUs" [00:28:30 CEST] <jamrial> also "fix range of allowed values for obu_type" which is not in that set [06:12:19 CEST] <cone-359> ffmpeg 03Steven Liu 07master:326cec3771f9: avformat/hls: make different warning message between open url and parse playlist [07:53:01 CEST] <cone-359> ffmpeg 03Karthick J 07master:3d0894990d17: avformat/movenc: Fix skip_trailer when global_sidx is enabled [07:53:02 CEST] <cone-359> ffmpeg 03Karthick J 07master:6aeaac3e1c40: avformat/dashenc: Add support for Global SIDX [15:57:41 CEST] <sasshka> hey people, ffmpeg fails to compile on power pc [15:57:45 CEST] <sasshka> it seems to fail only on LE [15:58:26 CEST] <JEEB> not many of us have access to those systems; do you know which the cross-compiler is that's required and which distros have it? [15:58:51 CEST] <sasshka> JEEB: I compiled on rhel [15:59:10 CEST] <sasshka> libswscale/ppc/swscale_vsx.c: In function yuv2rgb_full_1_vsx_template: [15:59:13 CEST] <sasshka> libswscale/ppc/swscale_vsx.c:527:9: error: invalid parameter combination for AltiVec intrinsic vy32_l = vec_mul(vy32_l, y_coeff); ^ [15:59:16 CEST] <sasshka> I can fix that [15:59:33 CEST] <JEEB> fedora seems to have something [15:59:34 CEST] <JEEB> ======================================================== Name & Summary Matched: ppc64le ======================================================== [15:59:37 CEST] <JEEB> gcc-ppc64le-linux-gnu.x86_64 : Cross-build binary utilities for ppc64le-linux-gnu [15:59:40 CEST] <JEEB> gcc-c++-ppc64le-linux-gnu.x86_64 : Cross-build binary utilities for ppc64le-linux-gnu [15:59:43 CEST] <JEEB> binutils-ppc64le-linux-gnu.x86_64 : Cross-build binary utilities for ppc64le-linux-gnu [16:00:00 CEST] <JEEB> sasshka: I think some Finn (?) recently changed that stuff, you should ping him [16:00:23 CEST] <JEEB> http://git.videolan.org/?p=ffmpeg.git;a=search;s=Lauri+Kasanen;st=author [16:00:38 CEST] <JEEB> at least that seems related [16:00:45 CEST] <sasshka> I see [16:00:59 CEST] <sasshka> I could just report it to bugzilla or I could fix that [16:01:06 CEST] <JEEB> so if you send out a patch you should CC that guy [16:01:06 CEST] <sasshka> let me know what you prefer [16:01:23 CEST] <JEEB> since he seems to be maintaining the VSX stuff [16:08:07 CEST] <sasshka> JEEB: I'll write to him [16:13:40 CEST] <durandal_1707> given set of 256 huffman code lengths - I want to write code which would generate all possible codes - how can i do that? [16:37:52 CEST] <cone-815> ffmpeg 03James Almer 07master:b74e13711ff6: avcodec/opus: make redundancy_buf 32 byte aligned [17:16:43 CEST] <j-b> heya [17:26:01 CEST] <sasshka> j-b: hello [17:26:09 CEST] <sasshka> j-b: any news about next VDD? [17:47:48 CEST] <cone-815> ffmpeg 03Matthew Fearnley 07master:5dcc63c1d2d9: libavcodec/zmbv: use PTRDIFF_SPECIFIER for `src - c->decomp_buf`. [17:47:49 CEST] <cone-815> ffmpeg 03Matthew Fearnley 07master:1046e880884b: libavcodec/zmbv: change 24-bit decoder channel order, from RGB24 to BGR24 [17:47:50 CEST] <cone-815> ffmpeg 03Matthew Fearnley 07master:b97a7dd03185: libavcodec/zmbvenc: add support for 24-bit encoding, using pix_fmt BGR24. [21:21:51 CEST] <durandal_1707> given set of 256 huffman code lengths - I want to write code which would generate all possible codes - how can i do that? [21:24:18 CEST] <durandal_1707> michaelni: know ^ answer? [21:28:13 CEST] <atomnuker> are you sure those are huffman codes you want? [21:28:25 CEST] <atomnuker> and not a golomb variant? [21:29:15 CEST] <durandal_1707> huffman, it is called in binary that way [21:29:52 CEST] <durandal_1707> binary have debug symbols [21:30:27 CEST] <atomnuker> you should really extract the codes themselves too, since all combinations of bits for 256 bit-long codes would be a universe-ending amount of data [21:32:49 CEST] <durandal_1707> bit lenghts are fixed, also i know first 8 bytes how it should look like when decoded [21:34:11 CEST] <durandal_1707> atomnuker: it is not 256! it is some special number that depends on highest coded bit length [21:34:42 CEST] <cone-185> ffmpeg 03James Almer 07master:461303f94ab6: avcodec/cbs_av1: fix parsing spatial_id [21:34:45 CEST] <atomnuker> you still need to know the input bits to make an output map, or at least how to create them [21:35:15 CEST] <durandal_1707> i know bit lenghts, that is enough info to create tree [21:35:50 CEST] <durandal_1707> canonical one does not work (inverted bits or not) [22:13:33 CEST] <kurosu> durandal_1707: do you have any idea if/when the tree building starts diverging from an optimal tree? or is the problem really that it is not canonical? because the remapping should be handled by sparse vlc init stuff (can't remember name) iirc [22:15:27 CEST] <atomnuker> the vlc system still needs input bit arrays, it can only do purely sequential (1,2,3) in non-sparse mode or any 16-bit int in sparse mode [22:17:45 CEST] <kurosu> sounds like a suboptimal tree is built - isn't magicyuv using one such or so? they trade off compression efficiency for decoding speed [23:05:10 CEST] <cone-185> ffmpeg 03James Almer 07release/4.1:ec82b3ecbbff: avcodec/cbs_av1: fix parsing spatial_id [00:00:00 CEST] --- Wed Apr 3 2019

1 0

ffmpeg.log.20190402
by burek 03 Apr '19

03 Apr '19

[00:08:51 CEST] <dipole> Hi! I'm trying to record 3 seconds of webcam with audio, but the following command just hangs after encoding the resulting video. If I interrupt it, I get my 3 second video [00:08:53 CEST] <dipole> ffmpeg -y -f alsa -ac 2 -i default -f video4linux2 -s vga -i /dev/video0 -c:v libx264 -t 3 /tmp/tmp19y9jqar.mp4 [00:09:10 CEST] <dipole> Any ideas how can I make this command not hang after it generated result? [00:11:26 CEST] <dipole> well, the problem is in this arguments: -f alsa -ac 2 -t 3 -i default [00:11:32 CEST] <dipole> if I remove it, the script works seamlessly [00:19:48 CEST] <dipole> what is pb? :) [00:21:24 CEST] <another> hmm.. seems to be broken. anyway, post your command output to some pastebin site [00:23:06 CEST] <dipole> ahh, https://pastebin.com/90Tk3GdX sure! [00:23:45 CEST] <dipole> (accidentally sent two commandline outputs, double Ctrl-C stops hanging ffmpeg [00:24:20 CEST] <dipole> also, while it hangs, it maxes the CPU [00:26:11 CEST] <another> hmm.. your alsa device looks wrong. have you looked at https://trac.ffmpeg.org/wiki/Capture/ALSA ? [00:27:31 CEST] <dipole> I have pulseaudio btw [00:28:51 CEST] <another> then maybe you should use -f pulse [00:30:04 CEST] <dipole> you are my hero!!! [00:31:17 CEST] <another> :) [03:16:43 CEST] <bray90820> The premium Tv service that was canceled was that the stuff that was on the OTA Tuners [08:53:31 CEST] <pk08> hi [08:53:49 CEST] <pk08> i want to output stream to udp multicast [08:54:19 CEST] <pk08> so by default what is the ttl of that multicast and how can i change in c program? [09:03:53 CEST] <JEEB> see the AVOptions of the UDP protocol [09:07:49 CEST] <pk08> thanks JEEB [09:08:09 CEST] <pk08> will this type of url work? url syntax: udp://host:port[?option=val...] [09:08:33 CEST] <JEEB> just use AVOptions [09:08:40 CEST] <pk08> ok, thank you [09:08:41 CEST] <JEEB> see the examples using av_dict [09:08:49 CEST] <JEEB> you set a key and a value :P [09:09:21 CEST] <JEEB> the UDP protocol does abuse URL options, but I don't recommend them unless required [09:12:31 CEST] <pk08> i will use av_dict option [09:13:11 CEST] <pk08> and i have to pass that option to avformat_init_output or avformat_write_header? [09:17:16 CEST] <JEEB> there's some examples under doc/examples [09:21:08 CEST] <pk08> thank you JEEB [13:27:24 CEST] <ehsanv> hi guys. i have a problem! i want to overlay my webcam on top of my desktop(making a screencapture with my video on it) and it works with ffmpeg. the problem is, i want to transparent it, and flip the camera verticaly, but when i use this code, it not works at all! [13:27:29 CEST] <ehsanv> ffmpeg -f dshow -i video="USB2.0 HD UVC WebCam":audio="Microphone (Realtek High Definition Audio)" -f gdigrab -i desktop -filter_complex "[0]geq='p(X,Y)'[a];[1][a]overlay=10:main_h-overlay_h-10" output.mp4 [13:29:01 CEST] <ehsanv> the [a] output is not show anything! but when use [0] instead of [a] on overlay input it works! [13:30:31 CEST] <ehsanv> P.S: sorry for posting command line here, pastebin is filtered for me, i'm from a sanctioned country, IRAN! [13:33:26 CEST] <durandal_1707> geq is extremly slow, why you use it at all? [13:34:26 CEST] <ehsanv> i'm newbie, any alternatives to suggest?! [13:34:38 CEST] <durandal_1707> vflip/hflip [13:34:47 CEST] <ehsanv> and for transparency? [13:35:02 CEST] <durandal_1707> what about it? [13:35:22 CEST] <thebombzen> overlay is fine if you're actually using it to overlay, which is what it appears you're doing [13:35:25 CEST] <ehsanv> i want to make whole picture semi transparent [13:35:48 CEST] <ehsanv> thanks durandal_1707 [13:35:59 CEST] <thebombzen> oh that, you want to set the alpha value to 0.5 [13:36:12 CEST] <ehsanv> yep [13:37:19 CEST] <thebombzen> try something like alphamerge. like: color=gray[alpha]; [input][alpha] alphamerge [output] [13:40:17 CEST] <ehsanv> thanks thebombzen, [13:40:25 CEST] <ehsanv> this command worked! [13:40:25 CEST] <ehsanv> ffmpeg -thread_queue_size 16 -f dshow -i video="USB2.0 HD UVC WebCam":audio="Microphone (Realtek High Definition Audio)" -f gdigrab -i desktop -filter_complex "color=gray:640x480[alpha];[0]hflip[a];[a][alpha]alphamerge[ao];[1][ao]overlay=10:main_h-overlay_h-10" output.mp4 [13:42:42 CEST] <ehsanv> i get the point! geq not worked because as durandal_1707 said, its slow and my webcam is a video stream and maybe the geq result isn't fast enough to sync with other inputs, so thats the problem. thank you both [14:37:25 CEST] <kubast2> Any of you know which audio codecs and containers does twitch.tv support? [14:39:43 CEST] <TheAMM> Isn't that better asked from Twitch? [14:40:05 CEST] <BtbN> h264 and aac [14:40:13 CEST] <BtbN> You stream to them via rtmp. That's it. [14:42:36 CEST] <kubast2> flv, h264 and aac [14:43:15 CEST] <BtbN> They will remux it though. The player never gets flv, it's all mpeg-ts [15:50:34 CEST] <MyStartx> Hello [15:53:25 CEST] <MyStartx> Guys how can i record just a terminal session in linux with ffmpeg? what input should i have in command line? thank you [15:53:57 CEST] <BtbN> script [15:58:08 CEST] <DHE> I assume he wants an x11grab that's single-window aware... [15:58:29 CEST] <MyStartx> yes..but i dont want all screen [15:58:44 CEST] <MyStartx> just onecterminal session [15:58:48 CEST] <pink_mist> that's what DHE meant by "single-window aware" [15:59:27 CEST] <DHE> ffmpeg -x $TOPLEFT_X -y $TOPLEFT_Y -s ${WIDTH}x${HEIGHT} -framerate 30 -f x11grab -i :0.0 [...] [15:59:40 CEST] <BtbN> I think the best you can do is query the region beforehand, so it won't track the window when you move it around [15:59:50 CEST] <DHE> realistically I would run a private X11 window (Xvnc is great for this) and record the whole screen anyway [16:00:20 CEST] <DHE> this would protect you against pop-ups, etc. [16:00:32 CEST] <BtbN> Don't you usually use Xephyr or something for thaT? [16:01:08 CEST] <DHE> umm.. not me. I thought xephyr was for hotseating [16:01:21 CEST] <BtbN> Xephyr is modern Xnest [16:01:29 CEST] <BtbN> Literally an X-Server in an X-Window [16:01:32 CEST] <DHE> oh... Xnest could work [16:01:37 CEST] <BtbN> Xnest is old and slow [16:01:39 CEST] <BtbN> use Xephyr [16:02:39 CEST] <DHE> that makes sense... [16:04:08 CEST] <mozzarella> please help me [16:04:11 CEST] <MyStartx> thank you guys [16:13:31 CEST] <Hello71> or just use script [19:54:41 CEST] <TheWild> hello [19:56:53 CEST] <TheWild> well, never mind. Tried concatenating two files losslessly, but just now I found out they use different codecs :/ [19:57:00 CEST] <Matttttt> Can anyone help me with an error, "dimensions not set" when trying to copy an HLS stream? [19:57:09 CEST] <Matttttt> https://pastebin.com/kNfMhfRq [21:31:07 CEST] <dawgly> Hello, does anyone know where I could learn the differences between huffyuv and v210 and which is better for capturing video using v4l2? [22:16:57 CEST] <rlot> Hi everyone. I'm streaming combined audio + video stream to youtube rtmp livestream. Is it possible to switch the input stream without killing the ffmpeg process? [22:17:25 CEST] <rlot> Do I need to use libav manually to achieve it? [22:18:45 CEST] <BtbN> No, ffmpeg can't do that. [22:18:56 CEST] <BtbN> You probably want to use OBS for dynamic live streams. [22:19:47 CEST] <rlot> Can't really use OBS because its supposed to be streamed from vps [22:19:54 CEST] <rlot> so no gpu [22:20:22 CEST] <BtbN> Probably have to roll your own software then, I'm not aware of anything headless that does that kind of stuff [22:21:46 CEST] <rlot> Hmm [22:22:34 CEST] <rlot> Or can I concat multiple of these streams before starting the transmission and use -stream_loop -1? [22:39:41 CEST] <bugre> Hi, i'm searching for a 'duration' limiter on `ffprobe`, to limit the probing of the stream to a specific time. Something similar as '-t' on the ffmpeg input, that limits the amount of time that is read from the input. I've searched the man and internet, but wasn't able to find an equivalent for ffprobe, but i'm probably looking at it from the wrong perspective. Would appreciate some itp/help if someone knows it. [22:40:51 CEST] <furq> bugre: analyzeduration/probesize [22:40:54 CEST] <faLUCE> bugre: did you try probesize? [22:41:06 CEST] <furq> although those are set by default unless you do something like -count_frames that requires decoding the whole stream [22:43:08 CEST] <bugre> thanks @furq and @faLUCE. I've not tried those options. Right now i've a script around the ffprobe that kills the command when desired time is reached. (it's something like: `fprobe -show_entries frame -select_streams V -print_format xml...`) [22:43:26 CEST] <bugre> I'll look into analyzeduration/probesize. [22:58:06 CEST] <bugre> @furq and @faLUCE, apparently the analyzeduration/probesize only affect the amount used to get the 'stream identified' and don't make the stream read operation stop, in my case, where i'm checking information on the frames itself. I've also tried the fpsprobesize, but not the expected result neither. [23:10:11 CEST] <faLUCE> bugre: do you want to stop ffprobe after getting these infos? [00:00:00 CEST] --- Wed Apr 3 2019

1 0

ffmpeg-devel.log.20190401
by burek 02 Apr '19

02 Apr '19

[00:25:55 CEST] <cone-843> ffmpeg 03Lynne 07master:0cea3ca8943b: opusdsp: create and move deemphasis and postfiltering from opus_celt [00:25:56 CEST] <cone-843> ffmpeg 03Lynne 07master:605e3303109e: x86/opusdsp: implement FMA3 accelerated postfilter and deemphasis [01:02:12 CEST] <cone-843> ffmpeg 03Michael Niedermayer 07release/4.1:cb4768e7f20b: avcodec/truemotion2: Fix integer overflow in tm2_null_res_block() [01:02:13 CEST] <cone-843> ffmpeg 03Michael Niedermayer 07release/4.1:ad0f4a7d10f9: avformat/mov: Fix potential integer overflow in entry check in mov_read_trun() [01:02:14 CEST] <cone-843> ffmpeg 03Michael Niedermayer 07release/4.1:65f94b732a27: avcodec/mpegpicture: Check size of edge_emu_buffer [01:02:15 CEST] <cone-843> ffmpeg 03Carl Eugen Hoyos 07release/4.1:daca529112d8: lavc/bmp: Avoid a heap buffer overwrite for 1bpp input. [01:02:16 CEST] <cone-843> ffmpeg 03Michael Niedermayer 07release/4.1:f1ecebcdb72b: avcodec/hevcdec: Avoid only partly skiping duplicate first slices [01:02:17 CEST] <cone-843> ffmpeg 03Michael Niedermayer 07release/4.1:1d720b37f0f3: Update for 4.1.3 [01:17:03 CEST] <cone-843> ffmpeg 03James Almer 07master:27c94c57dc84: avformat/movenc: free eac3 private data only when closing the stream [01:22:39 CEST] <jamrial> michaelni: can i backport the above commit to the 4.1 branch, or are you in the middle of testing/tagging? [01:36:00 CEST] <michaelni> jamrial, feel free to back port, i intend to do the release after sleeping [01:36:09 CEST] <jamrial> ok, thanks [01:37:18 CEST] <cone-843> ffmpeg 03James Almer 07release/4.1:58cd70201edc: avformat/movenc: free eac3 private data only when closing the stream [02:21:01 CEST] <taliho> Hello, I'm running FATE regression tests, but have an error "Test api-seek failed. Look at tests/data/fate/api-seek.err for details." [02:22:03 CEST] <taliho> The error message in the file is "Can't open file". Do I have download any test files separately, or is there a ./configure option I missed? [02:23:11 CEST] <jamrial> taliho: make fate-rsync will download the required samples to the folder you defined during configure with the --samples= option [02:23:55 CEST] <jamrial> if you didn't use that option during configure, then just run make fate-rsync and make fate with the SAMPLES= option, set to the same folder [02:27:37 CEST] <taliho> thanks jamrial [10:32:24 CEST] <cone-536> ffmpeg 03Michael Niedermayer 07master:3a0ec1511e70: avcodec/rscc: Check that the to be uncompressed input is large enough [10:39:27 CEST] <cone-536> ffmpeg 03Gyan Doshi 07master:7f9a81b11056: doc/general: make column key note more verbose [11:41:13 CEST] <thardin> is anyone else getting NAB spam? [11:42:39 CEST] <JEEB> the one about getting user lists or something? yea [11:43:03 CEST] <thardin> I guess they farm the mailing list then [11:43:21 CEST] <kierank> thardin: yes a lot [11:43:24 CEST] <thardin> I got some IBC spam too, but I've been suspecting that's because it's linked to my old work email or something [11:43:45 CEST] <kierank> they farm MLs and ring me asking to speak to jdarnley_obs [11:43:51 CEST] <kierank> even though he has nothing to do with expos [11:44:11 CEST] <J_Darnley> :) my condolences [11:44:24 CEST] <thardin> heh [11:45:48 CEST] <thardin> on an unrelated note, does anyone in here have experience with aaf export in protools? [11:53:07 CEST] <BradleyS> thardin: maybe [11:53:27 CEST] <BradleyS> what's the issue [11:54:06 CEST] <thardin> it seems mute automation doesn't get exported, and I'm wondering if there's any case where it would [11:54:30 CEST] <thardin> while volume does get exported [11:54:40 CEST] <BradleyS> hmm, not sure about that [11:55:19 CEST] <BradleyS> noise gate instead? [11:55:36 CEST] <BradleyS> are volume envelopes exported? [11:56:34 CEST] <BradleyS> also, if you're not aware, this is very very useful software (no affiliation): https://www.aatranslator.com.au [11:56:56 CEST] <thardin> yeah, volume is exported [11:57:04 CEST] <thardin> like the control point stuff [11:58:01 CEST] <thardin> kAAFParameterDef_Amplitude [11:59:02 CEST] <thardin> bookmarking aatranslator, thanks for the tip [11:59:40 CEST] <BradleyS> looks like the mute automation is a known gray area [11:59:51 CEST] <BradleyS> if a track is fully muted it's omitted [12:00:21 CEST] <BradleyS> otherwise mute points can still be missing, advice is to use clip gain / volume envelopes instead [12:00:38 CEST] <thardin> yeah that's what I've gathered so far [12:00:43 CEST] <BradleyS> sucks [12:00:58 CEST] <thardin> could protools be scripted to convert mute automation to volume? [12:01:24 CEST] <BradleyS> good question, sadly i never used mute automation much [12:33:16 CEST] <cone-536> ffmpeg 03Michael Niedermayer 07release/4.1:6c75df556f8c: avcodec/rscc: Check that the to be uncompressed input is large enough [12:33:17 CEST] <cone-536> ffmpeg 03Michael Niedermayer 07release/4.1:4154f8967820: Changelog: update [13:24:31 CEST] <cone-536> ffmpeg 03Linjie Fu 07master:a8355eed3699: lavc/qsvenc: expose low_power as a common option for QSV encoder [13:24:32 CEST] <cone-536> ffmpeg 03Zhong Li 07master:d071a1117daf: lavc/qsvenc: get vps extradata from MSDK [13:59:39 CEST] <cone-536> ffmpeg 03Zhong Li 07n4.1.3:HEAD: lavc/qsvenc: get vps extradata from MSDK [14:28:34 CEST] <BBB> so are the matrox people just going to resubmit their patch in a new thread until we forget to say it's closed source software, and then quickly apply it and now it can't be removed anymore [14:29:02 CEST] <thardin> probably [14:29:56 CEST] <thardin> they didn't seem too receptive to the idea that they are, in fact, a hardware company [14:59:55 CEST] <kierank> thardin: the same with all of them [15:00:02 CEST] <kierank> software is just this annoying burden for them [15:01:08 CEST] <thardin> there's win-win potential there, if there were only willing to see it [15:02:18 CEST] <thardin> RE: maybe having a vote, that heliosvoting requires being used by either google or facebook [16:56:12 CEST] <cone-536> ffmpeg 03Lynne 07master:b43b8d337db0: x86/opusdsp: fix WIN64 return value [17:05:32 CEST] <thebombzen> I sent a patch to the mailing list last october, it had issues, and I resent the fixed version a few days later and didn't get a response. I resent the patch in January and also didn't get a response. should I send it again? I don't really want to spam [17:05:43 CEST] <thebombzen> this is the patch, FWIW: https://0x0.st/zXg0.patch [17:05:49 CEST] <JEEB> you should ping it [17:06:09 CEST] <JEEB> it's the ffmpeg.c frame rate for remux thing, right? [17:06:48 CEST] <thebombzen> yes [17:06:53 CEST] <thebombzen> so resend it again? [17:06:55 CEST] <JEEB> no [17:07:03 CEST] <JEEB> just reply to the thread with a ping [17:07:11 CEST] <thebombzen> wdym "a ping" [17:07:34 CEST] <thebombzen> unless you just mean "bump it" [17:07:56 CEST] <JEEB> literally that. "ping? requesting reviews because I feel like being able to set a frame rate when remuxing is worthwhile" [17:13:32 CEST] <thebombzen> done [19:59:18 CEST] <cone-536> ffmpeg 03Gyan Doshi 07master:8eca42e6320e: lavf/mov: skip extradata check in esds for MPEG-1/2 audio [20:04:17 CEST] <Fenrirthviti> Hey guys, does anyone know offhand of FFmpeg implements their own bitrate padding for NVENC CBR modes? [20:04:28 CEST] <Fenrirthviti> offhand if, that is. [20:05:41 CEST] <JEEB> I'd say no. the encoder should do any padding if it feels like it needs such :P [20:06:19 CEST] <Fenrirthviti> Trying to diagnose what's going on. Noticing some odd bitrate fluctuations with CBR where low/no-motion video the bitrate tanks. [20:06:54 CEST] <Fenrirthviti> I'm being told that this is expected by NVIDIA, but that seems... wrong for a CBR mode. [20:07:21 CEST] <Fenrirthviti> Was curious if anyone had run in to that before. [20:08:31 CEST] <Fenrirthviti> Found a post from BtbN back in 2014 that seems to corroborate that they don't use any kind of bitrate padding. Seems odd to call it CBR in that instance. Frustrating :\ [20:10:08 CEST] <nevcairiel> are you sure you a re setting cbr mode properly? In my recent tests, the bitrate is always spot on, in such a way that i can only achieve with padding in x264 etc [20:10:50 CEST] <Fenrirthviti> Yes, quite certain. It doesn't happen in situations with medium/high motion. [20:11:11 CEST] <Fenrirthviti> If you encode, say, a still image or extremely simple animation with very little motion [20:11:46 CEST] <Fenrirthviti> Bitrate will fall close to 0 [20:12:55 CEST] <Fenrirthviti> Context here is latest OBS Studio, with the nvenc update we did. Happens in FFmpeg as well with default options. [20:13:28 CEST] <Fenrirthviti> Just factfinding to see if I can get more details on what's going on. [20:55:28 CEST] <BtbN> nvenc does automatically insert padding in CBR mode [21:23:55 CEST] <Fenrirthviti> Hm, their engineers are saying they don't. [21:24:10 CEST] <Fenrirthviti> I'll check again. [00:00:00 CEST] --- Tue Apr 2 2019

1 0

ffmpeg.log.20190401
by burek 02 Apr '19

02 Apr '19

[01:41:15 CEST] <tomf> just stopped by to thank you for making FFMPEG! its amazing! :) [01:44:05 CEST] <hanetzer> yep, sure is :D [01:44:21 CEST] <hanetzer> I ran into an ipcamera which runs ffmpeg as a webassembly library/something [01:44:26 CEST] Action: hanetzer is not hip to webdev stuff [02:25:14 CEST] <Atlenohen> Hello [02:26:03 CEST] <Atlenohen> I'm trying to extract N frames per second for the enitire video, but the old commands don't work anymore, r 1 only ouptput 1 frame and can't do the rest [02:27:23 CEST] <Atlenohen> Use '-frames:v 1' for a single image, or '-update' option, or use a pattern such as %03d within the filename. [02:27:23 CEST] <Atlenohen> av_interleaved_write_frame(): Invalid argument [02:32:27 CEST] <faLUCE> Atlenohen: paste the command [02:35:27 CEST] <Atlenohen> faLUCE: I'm pretty sure it's quite old, ffmpeg -loglevel verbose -i "Temp3.mp4" -r 1 %03d.bmp [02:38:55 CEST] <Atlenohen> Could not get frame filename number 2 from pattern 'd.bmp'. [02:41:29 CEST] <faLUCE> Atlenohen: which version are you using? [02:41:47 CEST] <Atlenohen> not more than a few weeks old [02:42:43 CEST] <Atlenohen> ffmpeg version N-93276-g3b23eb283a Copyright (c) 2000-2019 the FFmpeg developers [02:42:43 CEST] <Atlenohen> built with gcc 8.2.1 (GCC) 20190212 [02:42:53 CEST] <Atlenohen> win64, zeranoe [02:43:09 CEST] <faLUCE> Atlenohen: it works for me [02:43:36 CEST] <faLUCE> Atlenohen: what if you use %03d.jpg ? [02:45:00 CEST] <faLUCE> Atlenohen: wait [02:45:04 CEST] <Atlenohen> nope [02:45:06 CEST] <faLUCE> I got you error [02:45:15 CEST] <Atlenohen> video is 30000/1001 fps [02:45:17 CEST] <faLUCE> you have to use ZERO, not "o" [02:45:30 CEST] <Atlenohen> it is a zero [02:45:30 CEST] <faLUCE> %03d.bmp [02:46:02 CEST] <faLUCE> and what if you add quotes? [02:46:23 CEST] <Atlenohen> Yes I tried many combinations nonthing worked [02:46:31 CEST] <faLUCE> "%03d.bmp" [02:47:14 CEST] <faLUCE> but how do you invoke ffmpeg? [02:47:35 CEST] <faLUCE> it's clearly a problem in the token %03d.bmp [02:47:48 CEST] <faLUCE> your env sends bad stuff to ffmpeg [02:48:02 CEST] <faLUCE> what do you use for invoking ffmpeg? [02:48:08 CEST] <faLUCE> a script or a terminal? [02:49:29 CEST] <Atlenohen> batch file [02:49:39 CEST] <Atlenohen> oh right, i should try tpying in cmd manually [02:49:44 CEST] <faLUCE> Atlenohen: then this is the problem [02:50:04 CEST] <Atlenohen> most tokens do work in batches tho [02:50:13 CEST] <faLUCE> surely you won't have manually [02:50:14 CEST] <Atlenohen> but sometimes they don't, yeah it happened before [02:51:02 CEST] <faLUCE> surely you won't have that problem if you invoke ffmpeg manually [02:51:54 CEST] <Atlenohen> oh yeah, i have ffmpeg in environmental variable, so ffmpeg.exe isn't in the same path the video file is [02:53:08 CEST] <Atlenohen> yeah it works now [02:53:23 CEST] <faLUCE> good [10:32:07 CEST] <thesero_> Hi. I am using ffmpeg 4.1.1 with frei0r plugins 1.6.1. Under Ubuntu 18.04 all goes right. When crosscompiling for Windows, using mingw-w64 7.3 posix, I have noticed that all plugins written in C work, while those writen in C++ don't. I tracked town the problem to vf_frei0r.c where dlopen in called with the path/name of the plugin dll, but the returned handle is null. Any idea why? [10:34:07 CEST] <thesero_> Configuration: ./configure --arch=x86_64 --target-os=mingw32 --cross-prefix=x86_64-w64-mingw32- --disable-doc --enable-nonfree --enable-gpl --enable-version3 --enable-static --disable-shared --enable-frei0r --extra-cflags='-I../frei0r/include -I/usr/local/include' --extra-ldflags="-static -static-libstdc++ -static-libgcc -Wl,-Bstatic /usr/local/lib/libdl.a" --extra-libs='-lstdc++ /usr/local/lib/libdl.a' [11:48:19 CEST] <BlackDalek> hi. Is it possible to use ffmpeg to add a timecode overlay onto en existing video file? [13:15:51 CEST] <tommy``> there is some gui for ffmpeg to do fast things for lazy people? i want 25fps-y an mkv removing audio [13:24:06 CEST] <HickHoward> are you in a hurry? [13:24:19 CEST] <tommy``> no lazy [13:54:48 CEST] <w1kl4s> tommy`` you can just write a script for that [13:55:05 CEST] <w1kl4s> pretty sure it will be easier for you in the future [13:55:15 CEST] <tommy``> w1kl4s you mean .bat? [13:55:42 CEST] <w1kl4s> yeah for wangblows that would be the shell script extension [13:56:18 CEST] <tommy``> wangblows? [13:56:28 CEST] <w1kl4s> winshit [13:56:46 CEST] <tommy``> mmh [13:56:54 CEST] <tommy``> could you show me some examples? [13:57:31 CEST] <w1kl4s> i have no idea how bat scripts work, i don't use windows [13:57:35 CEST] <w1kl4s> google it [13:57:39 CEST] <w1kl4s> shouldn't be hard [16:03:02 CEST] <thesero_> Hi. I am using ffmpeg 4.1.1 with frei0r plugins 1.6.1. Under Ubuntu 18.04 all goes right. When crosscompiling for Windows, using mingw-w64 7.3 posix, I have noticed that all plugins written in C work, while those writen in C++ don't. I tracked town the problem to vf_frei0r.c where dlopen in called with the path/name of the plugin dll, but the returned handle is null. Any idea why? [16:03:55 CEST] <bencoh> is everything crosscompiled with the same toolchain? [16:04:11 CEST] <thesero_> yes [16:05:07 CEST] <thesero_> someone tried today compiing on windows and send me the dlls. same issue [16:06:27 CEST] <thesero_> build config is: ./configure --arch=x86_64 --target-os=mingw32 --cross-prefix=x86_64-w64-mingw32- --disable-doc --enable-nonfree --enable-gpl --enable-version3 --enable-static --disable-shared --enable-frei0r --extra-cflags='-I../frei0r/include -I/usr/local/include' --extra-ldflags='-static -static-libstdc++ -static-libgcc' --extra-libs='-lstdc++ /usr/local/lib/libdl.a' [16:08:34 CEST] <BtbN> Using your systems libdl.a, which is in /usr/local even, seems wrong for cross compiling to Windows. [16:11:03 CEST] <thesero_> sorry that is in fact link to libdll.dll.a [16:11:23 CEST] <BtbN> And what and why is that? [16:11:51 CEST] <thesero_> because in ffmpeg configure ldl is required for building with --enable-frei0r [16:12:27 CEST] <thesero_> for manipulating dynamic library [16:12:40 CEST] <thesero_> dlopen/dlclose etc [16:13:17 CEST] <thesero_> basically the vf_frei0r in ffmpeg takes the plugin name as argument and then loads it's library dynamically [16:13:45 CEST] <thesero_> and it works [16:13:47 CEST] <JEEB> are the frei0r windows plugins built with MSVC or mingw-w64? [16:13:58 CEST] <JEEB> the C++ ones specifically since you mentioned they don't work [16:14:00 CEST] <thesero_> all mingw-w64 [16:14:11 CEST] <JEEB> ok, so in theory the C++ ABI should work [16:14:18 CEST] <JEEB> no idea what the ldl.a wrapper is though, unfortunately [16:14:20 CEST] <thesero_> well yes [16:14:29 CEST] <JEEB> if it comes from mingw-w64 or where [16:14:46 CEST] <BtbN> ffmpeg has its own little wrapper to offer the dlopen() API on Windows [16:14:58 CEST] <BtbN> using a library for that seems highly wrong and is probably what's breaking things. [16:15:18 CEST] <thesero_> oh, did not know... thhe complation was crashing without libdl [16:15:50 CEST] <BtbN> http://git.videolan.org/?p=ffmpeg.git;a=blob;f=compat/w32dlfcn.h;h=c83bdc93… [16:16:47 CEST] <thesero_> oh, but then how would this resolve in config? "frei0r_filter_deps="frei0r libdl"" [16:17:06 CEST] <BtbN> That's wrong, it should use the ldl variable [16:17:19 CEST] <BtbN> And the code in that filter is also wrong, it directly includes dlfcn [16:17:37 CEST] <thesero_> well I saw this [16:17:39 CEST] <JEEB> tl;dr the filter was not reviewed enough [16:17:49 CEST] <JEEB> (nobody cared enough) [16:17:53 CEST] <thesero_> ok, however first time I included dlfcn directly [16:18:03 CEST] <JEEB> which is not surprising, frei0r is pretty minor [16:18:09 CEST] <JEEB> (not that it's a reason of course) [16:18:09 CEST] <BtbN> And it seems to have a hardcoded list of paths, which are all Linux-Only, where it searches for the library. [16:18:13 CEST] <BtbN> http://git.videolan.org/?p=ffmpeg.git;a=blob;f=libavfilter/vf_frei0r.c;h=c7… [16:18:20 CEST] <thesero_> I know [16:18:24 CEST] <thesero_> saw the code [16:18:31 CEST] <thesero_> but got over that [16:18:46 CEST] <thesero_> except for C++ dll stuff [16:19:08 CEST] <BtbN> C++ DLL stuff? [16:19:28 CEST] <thesero_> I mean dlls coming from C++ classes [16:19:35 CEST] <thesero_> that would not load in ffmpeg [16:19:49 CEST] <thesero_> I mean in vvf_frei0r [16:19:51 CEST] <BtbN> The DLL has to offer a defined API, which is a C API. Doesn't matter if it's written in C++ or C [16:20:10 CEST] <thesero_> it is, and also exported [16:20:22 CEST] <BtbN> That's all there has to be [16:20:34 CEST] <BtbN> it's a dll, there is no reason to also make ffmpeg link anything extra [16:23:42 CEST] <thesero_> I have added some logs in the filter's code (vf_frei0r.c) and it seems that the handle to these kinds of dll is null after calling dlopen. [16:24:11 CEST] <thesero_> *handle_ptr = dlopen(path, RTLD_NOW|RTLD_LOCAL); [16:25:06 CEST] <thesero_> but I shall try with the ffmpeg's dl api [16:25:13 CEST] <thesero_> and see if it works [16:52:56 CEST] <tommy``> there is some ffmpeg plugin for adobe audition 3.0? [17:10:49 CEST] <zumba_ad_> I'm on mac and I installed ffmpeg using brew. I'd like to try stabilizing a video. When I ran it, I got this error message `[AVFilterGraph @ 0x7fabee18d580] No such filter: 'vidstabdetect'` [17:11:18 CEST] <JEEB> yours was built without that filter then [17:27:05 CEST] <zumba_ad_> Yup, I was hoping if someone here knows how to add that filter using brew. I can install ffmpeg from source but was hoping if it can be done quickly with brew [17:30:15 CEST] <zumba_ad_> https://gist.github.com/maxogden/43219d6dcb9006042849 [17:30:18 CEST] <zumba_ad_> uninstall now [17:34:19 CEST] <zumba_ad_> didn't work, parameter passed was invalid [17:51:03 CEST] <zumba_ad_> I can't use brew since `brew info ffmpeg` showed it does not have library anymore. I'll be installing from source. Any link that I should follow? I remember using a configure script and it had something to do with gpl or something [17:51:16 CEST] <zumba_ad_> it's been a while and I couldn't remember exactly what it was [17:52:49 CEST] <zumba_ad_> found it - `--enable-nonfree && \` [18:16:56 CEST] <faLUCE> hello retal ;-) [00:00:00 CEST] --- Tue Apr 2 2019

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ffmpeg-devel.log.20190331
by burek 01 Apr '19

01 Apr '19

[10:50:28 CEST] <cone-584> ffmpeg 03Paul B Mahol 07master:4e8cbbf70e7a: avcodec: add Amuse Graphics decoder [11:41:56 CEST] <cone-584> ffmpeg 03Lauri Kasanen 07master:a6a31ca3d9af: swscale/ppc: VSX-optimize yuv2422_1 [11:41:57 CEST] <cone-584> ffmpeg 03Lauri Kasanen 07master:9a2db4dc61d0: swscale/ppc: VSX-optimize yuv2422_2 [11:41:58 CEST] <cone-584> ffmpeg 03Lauri Kasanen 07master:7adce3e64c6e: swscale/ppc: VSX-optimize yuv2422_X [12:13:54 CEST] <cone-584> ffmpeg 03Jun Zhao 07master:24dac56e1d8c: lavf/flvdec: add AMF date type support [12:13:55 CEST] <cone-584> ffmpeg 03Jun Zhao 07master:e995e2395b8f: lavf/flvdec: Cosmetics: Fix indentation for flv_read_packet [17:14:24 CEST] <thardin> I see kostya is working on a decoder for discworld noir's video format [17:15:15 CEST] <thardin> a game that's very tricky to get to run stably [18:43:11 CEST] <cone-392> ffmpeg 03Nick Renieris 07master:93748a2efa66: avcodec/tiff: Multi-page support [20:27:08 CEST] <durandal_1707> av1 is full of patents [20:27:29 CEST] <JEEB> everything is full of patents [20:28:56 CEST] <durandal_1707> except rawvideo [20:29:15 CEST] <JEEB> your colorspace is patented [20:29:21 CEST] <JEEB> so rawvideo is also patented [20:29:42 CEST] <durandal_1707> time to cry [20:57:59 CEST] <HickHoward> >av1 is full of patents [20:58:01 CEST] <HickHoward> :thinking: [23:26:48 CEST] <cone-843> ffmpeg 03Jun Li 07master:4f5e660e6954: avformat/doc, http, icecast, rtsp: Add option to disable send-expect-100 [23:26:48 CEST] <cone-843> ffmpeg 03Michael Niedermayer 07master:468ae6a734b2: avcodec/proresdec2: decode picture header before frame allocation [23:26:48 CEST] <cone-843> ffmpeg 03Michael Niedermayer 07master:c163e62db53d: avcodec/ivi: Factor ref_mb check out [23:26:48 CEST] <cone-843> ffmpeg 03Michael Niedermayer 07master:111e9b0929ab: avcodec/ivi: fix indention for previous commit [23:26:48 CEST] <cone-843> ffmpeg 03Michael Niedermayer 07master:4bf9561d63f3: avcodec/ivi: Mark band parameter as const [23:26:49 CEST] <cone-843> ffmpeg 03Michael Niedermayer 07master:4eec0082599a: avcodec/ivi: Reduce dereferencing structs in inner loop of ivi_process_empty_tile() [23:48:49 CEST] <cone-843> ffmpeg 03Lynne 07master:4a2c65162029: x86/opus_dsp: rename to celt_pvq [23:48:50 CEST] <cone-843> ffmpeg 03Lynne 07master:5468c1d07516: celt_pvq_init: only build when CONFIG_OPUS_ENCODER is enabled [00:00:00 CEST] --- Mon Apr 1 2019

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ffmpeg.log.20190331
by burek 01 Apr '19

01 Apr '19

[11:55:08 CEST] <clarkk> Are there any less cumbersome ways to specify time periods for filters? For example: [11:55:11 CEST] <clarkk> ffmpeg -i input.mp4 -af "volume=enable='between(t,56*60+12,56*60+14)':volume=0,volume=enable='between(t,56*60+20,56*60+22)':volume=0,volume=enable='between(t,56*60+24,56*60+27)':volume=0,volume=enable='between(t,56*60+30,56*60+37)':volume=0" -c:v copy output.mp4 [11:55:45 CEST] <clarkk> so, are there any alternatives to 56*60+12 etc? [22:10:05 CEST] <friendofafriend> Howdy. i'm using the h264_omx encoder on a Raspberry Pi to create an h264 stream. I'm piping the output of that into another instance of ffmpeg to create an MPEG-TS stream. The resulting stream plays very well, but I get "Invalid UE golomb code" error sometimes. Is there a flag I should try in ffmpeg to fix it? [22:51:00 CEST] <Ulrar> Hi, I have a line I use to convert to x265 which works okay : ffmpeg -i "${_file}" -vcodec hevc -preset medium -acodec aac new.mkv. The problem is that it only keeps one of the subtitles track, so I tried adding "-map 0:s? -c:s copy" to get them all but with that, if there are subtitle tracks, it ignores video and audio [22:51:19 CEST] <Ulrar> What would be the correct way to change my original line to also copy all subtitles tracks ? [22:51:26 CEST] <DHE> -map 0 # will fetch everything [22:54:08 CEST] <Ulrar> DHE: Excluding the non-converted audio and video tracks ? [22:54:44 CEST] <Ulrar> The goal here is to get all the subtitles, and still convert the video to x265 [22:55:44 CEST] <another> no. it just selects everything for conversion/copy [22:56:08 CEST] <Ulrar> I thought so, not what I'm looking for then [22:56:19 CEST] <DHE> I think you might want -c:s copy for thoroughness [22:56:19 CEST] <another> see also: https://ffmpeg.org/ffmpeg-all.html#Stream-selection [22:56:24 CEST] <DHE> wait, what am I missing then? [22:57:28 CEST] <Ulrar> DHE: I want to copy all subtitles as is, but convert the video to x265, not copy it [22:57:45 CEST] <Ulrar> Which is what my original line did, convert the video [22:57:48 CEST] <another> -map 0 -c:s copy -c:a aac -c:v hevc [22:58:12 CEST] <another> Ulrar: i think you misunderstood something [22:58:20 CEST] <Ulrar> ffmpeg -i "${_file}" -map 0 -c:s copy -c:a aac -c:v hevc -preset medium out.mkv [22:58:24 CEST] <Ulrar> Is that correct ? [22:58:32 CEST] <DHE> yes, that'll get you started [22:58:41 CEST] <Ulrar> Perfect, thanks [00:00:00 CEST] --- Mon Apr 1 2019

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