[00:00:57 CET] <SortaCore> play it in public and see if people give you odd looks [00:01:15 CET] <durandal_1707> TheRock: yes, first you need to teach neural networks by giving it to them [00:02:09 CET] <zash> neural networks solve all the problems! [00:03:03 CET] <alexpigment> -vf sex_video_or_nah [00:42:54 CET] <pos> An application crashes when using -vcodec copy: [00:42:55 CET] <pos> 2017-12-01 04:41:27.765298 zmc_m1 5442 WAR /srv/build/ZoneMinder2/src/zm_videostore.cpp:708: Mangled AVPacket: discarding frame zm_videostore.cpp 708 [00:42:55 CET] <pos> 2017-12-01 04:41:27.551439 zmc_m1 5442 WAR Unable to set movflags to frag_custom+dash+delay_moov [00:43:40 CET] <pos> any ideas whats up? [00:45:06 CET] <klaxa> that doesn't look like ffmpeg... zm_videostore.cpp? [00:45:23 CET] <pos> no, it's calling avconv [00:45:35 CET] <klaxa> it seems to use libav* (AVPacket) but then the call would be useufl [00:45:38 CET] <klaxa> *useful [00:45:42 CET] <klaxa> also avconv != ffmpeg [00:47:32 CET] <pos> apparently the avconv job tasked with writing the video file to disk is unable to set some flags? [00:47:54 CET] <klaxa> if it is calling avconv ask in #avconv [00:56:48 CET] <c_14> you mean #libav (I believe) [01:00:06 CET] <pos> i know this is #ffmpeg. i've run avconv -i "rtsp://source" -vcodec copy -acodec copy a.mp4 which ofc works [01:01:11 CET] <pos> avconv -i "rtsp://source" -vcodec copy -acodec copy -map 0 -movflags frag_custom+dash+delay_moov a.mp4 ofc fails [01:01:28 CET] <pos> are these extra movflags part of a separate package [01:01:45 CET] <SortaCore> see fflogger's message, pos [04:24:42 CET] <dystopia_> hello all [04:24:53 CET] <dystopia_> trying to cut 60s from an m2ts file [04:24:57 CET] <dystopia_> ffmpeg -i 00001.m2ts -t 60 -c:v copy -c:a pcm_s24le sample.m2ts [04:24:57 CET] <dystopia_> ffmpeg -i 00001.m2ts -t 60 -c copy sample.m2ts [04:25:10 CET] <dystopia_> ^both commands create an output without any audio [04:25:14 CET] <dystopia_> anyone got any ideas [04:25:53 CET] <TheRock> yes, is your windows volume maybe too small ? [04:26:42 CET] <dystopia_> there is audio in the source file TheRock which plays fine, but not in the copied sample using ffmpeg [04:26:53 CET] <dystopia_> so it's not a volume issue [04:27:28 CET] <dystopia_> no audio in the output when checking with media info/ffprobe [05:11:52 CET] <jaggz> how would I go about doing a live-preview of the output of ffmpeg, while adjusting settings (like bitrate)? [06:08:23 CET] <FunkyBob> hey all... trying to convert a video from my phone, but the frame rate is munted... it plays way too fast [06:09:05 CET] <FunkyBob> oh, looks like -r will do it [06:10:03 CET] <FunkyBob> or not :/ [06:14:42 CET] <TheRock> if you are unsure [06:14:49 CET] <TheRock> you can try all parameters from a..to z [06:17:04 CET] <FunkyBob> ... [10:19:49 CET] <Timmey> Hey guys, quick question: it seems I can't get the srt encoder to be included in ffmpeg on my raspberry pi 2 (raspbian). My ffmpeg installation on mac does have it out of the box. [10:20:14 CET] <Timmey> Anyone know if I can install it manually [12:53:52 CET] <termos> any way to set ffmpeg log level per module, like getting debug info from demuxer but not from muxers? [14:36:48 CET] <jfmcarreira> heyyy guys [14:37:45 CET] <jfmcarreira> i am using ffmpeg to demux and decode a stream, but av_read_frame returns EOF on the first call. that is quiet strange. [14:58:05 CET] <pihpah> Is it a good bitrate for a 720p video ? 764 kb/s, 23.98 fps [14:58:58 CET] <furq> depends but probably not [14:59:43 CET] <pihpah> furq: you mean such a bitrate is too great for that kind of videos? [15:00:25 CET] <pihpah> YouTube recommends on 5mbps for 30 fps videos. [15:00:41 CET] <JEEB> there is no magic bit rate [15:00:54 CET] <furq> i don't know why they'd recommend that considering they recompress 720p30 to 2.5mbit [15:00:57 CET] <JEEB> if you are using x264,5 use CRF [15:01:19 CET] <pihpah> Well, I do that with -crf 28 [15:01:44 CET] <JEEB> for x264 that's puh-ret-teh high of a value, although it's possible that it looks OK to you [15:01:55 CET] <JEEB> and if uploading to a service just encode in as high possible quality as possible if you know the service will re-encode your stuff anyways [15:02:07 CET] <furq> crf 28 will look "OK" [15:02:14 CET] <furq> it's far from archival quality though [15:07:14 CET] <pihpah> Yeah, I know that. I am using those videos for my own streaming service. Just started to think lately whether I overuse my resources by improper video encoding. [16:15:08 CET] <SortaCore> when transcoding, do you use the same hw_device_ctx for decoding and encoding? [16:15:19 CET] <SortaCore> rip buried [16:22:35 CET] <traw> what is the purpose of AVIOInterruptCB in avio_open2 function? [16:30:11 CET] <DHE> traw: some IO operations are effectively blocking, most notably network IO. this lets you provide a function that has the opportunity to veto waiting on the network and return an error code into the system [16:34:14 CET] <traw> okay thanks DHE [17:34:34 CET] <gon_> hello, came in a few days ago asking about hstack and aspect ratio. As long as the two inputs are the same height I have pretty good luck with the final output but I'm having trouble with a couple. setsar was recommended but I can't seem to use it with filter_complex https://pastebin.com/AQ3aQBsg [17:54:21 CET] <DHE> gon_: you'll have to put it all into a single -filter_compltex [18:08:43 CET] <gon_> So I'd just append that to the end of filter_complex, DHE ? Input 1 has the correct aspect ratio but for some reason input 2 is being stretched. A couple other clips I've put together have come out correctly but I just have a couple that have this issue [18:12:33 CET] <DHE> ffmpeg -i ... -i ... -filter_complex "hstack,scale=...,setsar=...[output]" -map [output] -map 0:a $CODEC_OPTIONS outputtest.mp4 [18:12:56 CET] <gon_> Thanks DHE, I'll give that a try [18:13:10 CET] <durandal_1707> gon_: if you are attempting to combine videos with different aspects you need to pad before combining [18:13:42 CET] <DHE> I made that up on the spot so it might need fixing [18:15:26 CET] <gon_> I'll look up padding since I haven't used it before. New to filters in ffmpeg [18:16:54 CET] <gon_> The heights of both inputs are the same. Some successful clips come out with the width of input1+input2 while two I've tried so far come out with input2 stretched. [19:47:41 CET] <sledg_000> ffmpeg -y -r 10 -i downloads/export_palette/001export.png -i downloads/export_palette/002export.png -i out.mp3 -filter_complex "nullsrc=size=640x480 [base]; [0:v]setpts=PTS-STARTPTS,scale=320x240[img1];[1:v]setpts=PTS-STARTPTS,scale=320x240[img2];[base][img1] overlay=shortest=1,[tmp1]; [tmp1][img2] overlay=shortest=1:x=320" -c:v libx264 -vframes 200 out.mp4 [19:48:26 CET] <sledg_000> i am trying to delay the first image [19:50:22 CET] <sledg_000> i want the first image to show for 10seconds [19:50:46 CET] <sledg_000> the second image to show after 10sec [19:52:06 CET] <sledg_000> ffmpeg -y -r 10 -i downloads/export_palette/001export.png -i downloads/export_palette/002export.png -i out.mp3 -filter_complex "nullsrc=size=640x480 [base]; [0:v]setpts=PTS-STARTPTS,scale=320x240[img1];[1:v]setpts=PTS-STARTPTS,scale=320x240[img2];[base][img1] overlay=shortest=1,XXXXXXXXXXX[tmp1]; [tmp1][img2] overlay=shortest=1:x=320" -c:v libx264 -vframes 200 out.mp4 [19:52:24 CET] <sledg_000> i feel the filter i need should where i put XXXXXXXXXXX [19:53:48 CET] <samoo8> How can I automatically rename output file like video.mkv to video-copy.mkv ? I have this bat script atm: ffmpeg -i %1 -c:v copy -c:s copy -c:a mp3 %1 [19:57:01 CET] <samoo8> i might convert mp4s also so it needs to do video.mp4 --> video-copy.mp4 also [20:25:36 CET] <dystopia_> samoo8 use an if exist before the ffmpeg command [20:28:08 CET] <dystopia_> like this [20:28:13 CET] <dystopia_> if exist video.mkv (set output=video-copy.mkv) else (set output=video.mkv) [20:28:13 CET] <dystopia_> ffmpeg -i %1 -c:v copy -c:s copy -c:a mp3 %output% [20:58:09 CET] <samoo8> dystopia_: thx mate [20:58:36 CET] <dystopia_> np [21:00:02 CET] <sledg_000> i am trying to delay the first image [21:00:03 CET] <sledg_000> <sledg_000> i want the first image to show for 10seconds [21:00:03 CET] <sledg_000> <sledg_000> the second image to show after 10sec [21:00:03 CET] <sledg_000> <sledg_000> ffmpeg -y -r 10 -i downloads/export_palette/001export.png -i downloads/export_palette/002export.png -i out.mp3 -filter_complex "nullsrc=size=640x480 [base]; [0:v]setpts=PTS-STARTPTS,scale=320x240[img1];[1:v]setpts=PTS-STARTPTS,scale=320x240[img2];[base][img1] overlay=shortest=1,XXXXXXXXXXX[tmp1]; [tmp1][img2] overlay=shortest=1:x=320" -c:v libx264 -vframes 200 out.mp4 [21:00:13 CET] <sledg_000> anyhelp [21:00:54 CET] <sledg_000> basically what i am trying to achieve is [21:01:08 CET] <sledg_000> i have img1, img2, img3 [21:01:29 CET] <sledg_000> i want to create a video to show img1 for 5 sec [21:01:45 CET] <sledg_000> then switch to img2 for 10sec [21:01:56 CET] <alexp> https://trac.ffmpeg.org/wiki/Slideshow [21:02:16 CET] <alexpigment> see the "sequential" section [21:02:22 CET] <sledg_000> yes [21:02:32 CET] <sledg_000> i used that but it does not show [21:03:00 CET] <sledg_000> i also have a background mp3 that must play at the background throughout [21:03:06 CET] <alexpigment> right [21:03:19 CET] <alexpigment> so it sounds like you want the -r to be 1/10 [21:03:33 CET] <alexpigment> and then you can define the frame rate as whatever after the -i has been specified [21:03:34 CET] <sledg_000> what happens is [21:04:11 CET] <sledg_000> the output video show img1, img2 and img3 on first frame of video [21:04:28 CET] <sledg_000> then img3 just sits all through the video [21:04:49 CET] <alexpigment> did you try -r 1/10? [21:04:50 CET] <sledg_000> i need a way to tell it to show img1 for 5 sec before switching to img2 [21:04:55 CET] <alexpigment> rather [21:05:23 CET] <alexpigment> try ffmpeg -framerate 1/10 -i [inputs] -r 24 etc [21:05:35 CET] <sledg_000> let me retry, i believe i tried every possible approach, it did not work [21:05:40 CET] <alexpigment> ok [21:05:41 CET] <sledg_000> i will retry this [21:05:55 CET] <alexpigment> i'll follow along [21:06:01 CET] <sledg_000> thanks buddy [21:08:27 CET] <alexpigment> ok, i can see what you're talking about [21:08:37 CET] <alexpigment> maybe you need to use the concat demuxer [21:23:00 CET] <alexpigment> sledg_000: https://superuser.com/questions/1049452/ffmpeg-create-a-slideshow-video-from... [21:23:08 CET] <alexpigment> see the answer with the green check mark [21:23:20 CET] <alexpigment> as I mentioned above, you have to use the concat demuxer [21:27:07 CET] <sledg_000> thanks [21:27:28 CET] <sledg_000> i think the problem i have with the playback is from the player [21:27:50 CET] <sledg_000> vlc changes the images [21:28:18 CET] <sledg_000> but window media player just went black [21:32:18 CET] <sledg_000> thanks [21:32:32 CET] <sledg_000> seem like i am getting a way [21:33:08 CET] <JEEB> -41 [21:33:10 CET] <sledg_000> still not there but this is extremely helpful [21:35:25 CET] <alexpigment> sledg_000: when i followed that answer, i got WMP to play it correctly [21:35:44 CET] <sledg_000> now i think i need a way to access the audio length [21:35:55 CET] <alexpigment> so that it ends at the end of the track? [21:35:59 CET] <alexpigment> if so, try -shortest [21:36:27 CET] <sledg_000> do i can do an audiolength/number_of_images [21:36:37 CET] <sledg_000> to evenly distribute images [21:36:43 CET] <alexpigment> do you need to see all of the images? [21:36:47 CET] <alexpigment> or are they just kind of filler? [21:36:56 CET] <sledg_000> while ensuring the song plays through [21:37:20 CET] <sledg_000> the audio take highest priority [21:37:25 CET] <alexpigment> then use -shortest [21:37:39 CET] <alexpigment> it'll stop encoding frames at the end of the audio [21:37:46 CET] <alexpigment> put that after the inputs, btw [21:38:05 CET] <sledg_000> shortest stops at the end of the image slide [21:38:13 CET] <sledg_000> so audio never finishes [21:38:20 CET] <sledg_000> let me play around a bit [21:38:26 CET] <alexpigment> ok, so you don't have enough images then [21:38:33 CET] <alexpigment> anyway, good luck [21:38:43 CET] <sledg_000> i am guessing i need longest [21:38:48 CET] <sledg_000> if it even exists [21:39:06 CET] <sledg_000> if the audio is a 60sec audio [21:39:08 CET] <alexpigment> honestly, i've never heard of longest [21:39:15 CET] <alexpigment> it may exist, but i don't know about i [21:39:16 CET] <alexpigment> *it [21:39:32 CET] <sledg_000> then the 3 images gets splitted [21:39:38 CET] <sledg_000> thanks [21:58:36 CET] <sledg_000> -vf fps=25 option saved the day for me [22:06:22 CET] <alexpigment> sledq_000 are you in a pal country? [22:07:07 CET] <alexpigment> (i personally think pal frame rates are pointless in 2017, unless your source material is at that same frame rate) [22:07:16 CET] <alexpigment> either way, you're doing stills, so it doesn't matter really [22:08:56 CET] <furq> you know we still broadcast at 25p/50i right [22:09:26 CET] <alexpigment> furq: yep. it's just that unless your source content is 25p inherently, there's no advantage to pal frame rates [22:09:49 CET] <alexpigment> and I've yet to see a pal TV or player that isn't internally NTSC with some conversion hardware [22:10:07 CET] <alexpigment> which is why all "multi-region" blu-ray players are just PAL players [22:10:25 CET] <furq> this may be the case but it's still better than ffmpeg defaulting to 29.97 [22:10:45 CET] <alexpigment> furq: i'm not terribly concerned with the defaults [22:11:06 CET] <alexpigment> more just that it doesn't make sense to use 25fps for purely synthetic content [22:11:16 CET] <alexpigment> especially considering that it will never look smooth on a computer monitor [22:11:31 CET] <therage3> i think what alexpigment is saying that unless the origin is a PAL broadcast, 25fps doesn't make much sense [22:11:35 CET] <therage3> if i'm not mistaken [22:12:19 CET] <alexpigment> therage3: yeah, that's exactly what I was saying. maybe I jumbled some words or didn't say it eloquently enough above ;) [22:13:44 CET] <alexpigment> but yeah, i've talked to lots of pal people who are like "this pan isn't smooth". and it's because 25p or 50i just doesn't divide evenly into 60hz [22:14:32 CET] <therage3> framerates always bother me [22:14:51 CET] <alexpigment> therage3: i like the simplicity and complete ambiguity of that statement :) [22:15:52 CET] <therage3> heh [22:15:52 CET] <alexpigment> framerates bother me too, but it's usually because content providers don't care about frame rates and I have to look at judder on services that aren't worthy of paying for [22:16:07 CET] <therage3> well, if you remember yesterday, there was this NTSC DVD i was trying to detelecine [22:16:16 CET] <alexpigment> oh right [22:16:19 CET] <therage3> and it turned out the detelecine was applied in not a specified pattern [22:16:45 CET] <therage3> (the framerate comment here applies because it has to convert 29.97 to 24 after decimating duplicates) [22:17:30 CET] <alexpigment> yep [22:17:35 CET] <alexpigment> it's all kinda dumb [22:17:51 CET] <alexpigment> NTSC does the 3/2 pulldown [22:17:59 CET] <alexpigment> PAL usually does a 4% speedup [22:18:11 CET] <alexpigment> I personally prefer the former, but both are definitely compromises [22:19:24 CET] <alexpigment> what's awful though is that there are many paid tv streaming services now [22:19:46 CET] <alexpigment> DirecTV Now, Playstation Vue, YouTube TV, etc [22:20:11 CET] <alexpigment> and they take 1080i broadcasts and convert them to 720p30 or 1080p30 (and sometimes 720p60) [22:20:21 CET] <therage3> some people do notice that the speedup introduces the "chipmunk effect" into people's voices [22:20:31 CET] <therage3> and this is especially bad for musicals, where pitch perfection is required [22:21:06 CET] <alexpigment> you completely lose the 3/2 pulldown when you convert from 60i to 30p. and so judder is just awful, and unaccepatable on a paid service. but people just have very low standards and so there's not a huge uproar that forces changes to be made [22:21:34 CET] <alexpigment> yeah, the speedup is much more noticeable to me than the judder from a proper 3/2 pulldown [22:23:12 CET] <therage3> yeah [23:06:22 CET] <durandal_170> alexpigment: i pushed fillborders filter [23:08:49 CET] <alexpigment> oh nice [23:08:59 CET] <alexpigment> that'll be really handy in the future [23:09:25 CET] <alexpigment> I ended up using crop+pad yesterday, although getting the parameters right was confusing because crop and pad don't work like you'd expect [23:10:27 CET] <alexpigment> at least, crop doesn't work like you'd expect (you specify the uncropped area rather than the cropped area) [23:11:36 CET] <alexpigment> lemme rephrase: it didn't work like i'd expect, but this is because I only need to crop on one side [23:11:51 CET] <alexpigment> anyway, looking forward to using fillborders :) [23:43:11 CET] <teratorn> what's a good way to create mp4 files that use data referencing without copying frame data from a source [00:00:00 CET] --- Sat Dec 2 2017