[00:02] <Oxymoron> Hey guys, anyone have experience with flv's? I'm using an avisynth script to join 2 videos together to form a video conversation, but unfortunately they get out of sink eventually. Any way to be sure things stay lined up? [00:03] <Oxymoron> So initially i start them with offsets that are stored in the DB at the time of publishing the streams, and it looks fine, but 10-15 mins into playback one video will wander ;( [00:18] <FearlessPidgin> JEEBsv: I found out that there is a pattern of three progressive (full) frames, and followed by two interlace frames. Is this a common interlace method? Does that mean it's Inverse Telecine? [00:53] <llogan> Oxymoron: did you try concating them with ffmpeg? [01:04] <Hello71> was libfdk_aac -vbr removed recently? [01:22] <llogan> Hello71: not that i've noticed. why do you ask? [01:31] <Hello71> because I'm too lazy to set -b:a properly [01:31] <Hello71> and it doesn't work anymore [01:31] <Hello71> well, I get: [01:32] <Hello71> $ ffmpeg -v warning -y -i in.y4m -c:v libx264 -preset slower -tune animation -movflags empty_moov -profile:v baseline -c:a libfdk_aac -vbr 1 out.mp4 [01:32] <Hello71> Codec AVOption vbr (VBR mode (1-5)) specified for output file #0 (out.mp4) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream. [01:48] <Hello71> Encoder did not produce proper pts, making some up. [01:48] <Hello71> what does this message mean? [01:48] <Hello71> I don't care about timestamps. [01:55] <Hello71> same command. [01:56] <llogan> and? [05:00] <Dark-knight> For anyone that cares I just found out that "-c copy" means copy ALL codecs. whereas "-acodec copy" or "-vcodec copy" only copy the audio or video. [05:01] <Dark-knight> i just shortened all my codes [05:01] <Dark-knight> thanks to this [05:02] <Dark-knight> although it doesn't copy subtitles for some reason, but it copys everything else [05:07] <rcombs> subtitles work very differently from audio and video in ffmpeg (though there are plans to change that eventually) [05:07] <Dark-knight> good [05:19] <Dark-knight> whats the command to copy/transfer the subtitles over to the new video [05:22] <klaxa> try -map [05:24] <Dark-knight> just -map? [05:24] <Dark-knight> nothing else? [05:39] <kingsob> I am trying to concat two videos, the 1st one doesn't have any audio, and I can't figure out the correct filter_complex, here is my input and output http://pastebin.com/GSfkWaEC [05:49] <klaxa> i started using the concat demuxer instead lately [05:49] <klaxa> http://trac.ffmpeg.org/wiki/How%20to%20concatenate%20%28join,%20merge%29%20m... [05:51] <kingsob> let me give that another try, but I recall having a problem where the audio of the 2nd video would start playing at the beginning of the 1st video [05:51] <klaxa> hmm i haven't had that usecase yet so that might happen [05:52] <Keshl> Why not seproate the audio, add in a period of silence equal to the first video, then put it back, oÉo? [05:53] <kingsob> I got it working by adding a audio stream from /dev/null to the 1st video [05:53] <Keshl> Or dat. -É-. [05:53] <kingsob> but I'd rather not have to deal with the case where a video doesn't have an audio stream if there is a better solution [05:56] <relaxed> there isn't [05:56] <kingsob> http://pastebin.com/iWkDWUex [05:56] <kingsob> that seems to work [05:56] <kingsob> at least its down to a single command :) [05:58] <kingsob> I take it back, the command runs fine, but it looks like its generating me a never ending video [05:58] <relaxed> because /dev/zero is never ending [05:58] <Dark-knight> just ÷ by 0 [05:59] <relaxed> there's -shortest but I don't see how to work that into your current command [05:59] <Keshl> I think there's a command to end when a particular stream ends.. [05:59] <relaxed> you may need two commands [05:59] <relaxed> -shortest [05:59] <Keshl> No, a stream of your choosing, not whichever ends first, oÉo. [06:00] <relaxed> stream selection with -t would be handy [06:00] <kingsob> I assume its doomed anyways, wouldn't the audio always be from /dev/null, sicne its never ending, it wouldn't know when to switch to the 2nd stream [06:00] <Keshl> That was it OÉO I dink OÉO [06:01] <kingsob> II can live with my current solution of adding an audio stream to the video's [06:02] <relaxed> kingsob: like I said, you'll need two commands: use -shortest with the /dev/zero input [06:02] <kingsob> ahh [06:03] <kingsob> yeah didn't realize already doing that [06:03] <kingsob> ffmpeg -ar 48000 -ac 2 -f s16le -i /dev/zero -i intro_640x960.mp4 -shortest -c:v copy -c:a libfdk_aac test.mp4 [06:24] <Dark-knight> can a .mp4 video have a XVID video codec? [06:25] <klaxa> XviD is MPEG-4 Part 2 compliant, .mp4 can hold MPEG-4 Part 2 video streams, so yes [06:26] <Dark-knight> will the .mp4 container be happy about that? [06:26] <klaxa> why should it be sad about it? [06:26] <Dark-knight> or would mpeg4 be better [06:26] <Zeranoe> How could I calculate the actual displayed WxH in pixels if I know the SAR, DAR and resolution? [06:27] <Dark-knight> what is better for .mp4 a XVID codec or a MPEG4 codec? [06:27] <klaxa> Dark-knight: the mp4 container should happily take xvid streams [06:27] <klaxa> when in doubt, try both [06:27] <Dark-knight> what is the default for .mp4? [06:28] <Zeranoe> Dark-knight: H.264 [06:28] <Dark-knight> is H.264 mpeg4 or xvid? [06:29] <Zeranoe> No, it's AVC [06:29] <Dark-knight> avc? [06:29] <Zeranoe> Dark-knight: http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC [06:29] <Dark-knight> so it is mpeg4 [06:29] <Zeranoe> Not in the way your thinking [06:29] <Dark-knight> but it is [06:29] <klaxa> H.264 is MPEG-4 Part 10 [06:30] <klaxa> xvid and mpeg4 are MPEG-4 Part 2 [06:30] <Dark-knight> ughh [06:30] <Dark-knight> so confused [06:31] <klaxa> well instead of asking specific questions without context, what is your usecase exactly? [06:32] <Dark-knight> ffmpeg -i input.avi -c:v mpeg4 -c:a aac output.mp4 [06:32] <Dark-knight> i was wondering what i could type instead of -c:v mpeg4 [06:32] <klaxa> what do you want to achieve? [06:32] <Zeranoe> Dark-knight: libx264 [06:32] <Dark-knight> like what other video codecs would be a better choice [06:32] <klaxa> generally yes [06:33] <Zeranoe> Dark-knight: https://trac.ffmpeg.org/wiki/x264EncodingGuide [06:33] <klaxa> libx264 is probably the best in terms of quality per filesize [06:33] <Dark-knight> i don't care how big the file is, all i care about is quality [06:34] <Zeranoe> Dark-knight: Try x264, -crf 20 to -crf 23 [06:34] <Dark-knight> whats that? [06:34] <Dark-knight> -crf? [06:34] <Zeranoe> Dark-knight: Constant quality, read the link about crf [06:36] <Dark-knight> is x264 like 1080p? [06:36] <Dark-knight> or better? [06:37] <klaxa> wha- [06:37] <Zeranoe> 1080p is a resolution [06:37] <Dark-knight> like i said, im new to this [06:37] <Zeranoe> p, for progressive, 1080 resolution [06:37] <Zeranoe> x264 can encode to 1080p, but then again so can mpeg4 [06:37] <Dark-knight> does x264 affect resolution? [06:37] <Dark-knight> ok [06:38] <Zeranoe> x264 is your encoder, it compresses the video. The resolution is another topic [06:38] <Dark-knight> if the input video isn't 1080p then the output can't be encoded to 1080p can it? [06:38] <Zeranoe> it can, you can resize up [06:39] <Dark-knight> how wouldn't that degrade the quality? [06:39] <Zeranoe> keep in mind the p is for progressive. When talking about the resolution you mean 1920x1080 [06:39] <Dark-knight> sure [06:40] <Dark-knight> really nice graphics is what i meant [06:41] <Zeranoe> transcoding/encoding/converting all will degrade quality. Other than -crf 0 which is lossless [06:41] <Zeranoe> not advised to do -crf 0 fyi, because 'Consider 18 to be visually lossless or nearly so' [06:42] <klaxa> well that highly depends on the other parameters chosen [06:42] <klaxa> and it really depends on the source material [06:43] <Zeranoe> klaxa: I just copied that from the Wiki [06:43] <klaxa> ah [06:43] <klaxa> well yeah generally it's not wrong [06:44] <Dark-knight> if the input video is 360p can the output video be 1080p? [06:44] <klaxa> yes but it will look bad [06:44] <Dark-knight> i mean exactly what im asking [06:44] <Dark-knight> ok how bad? [06:44] <klaxa> worse than the 360p input [06:44] <klaxa> you cannot encode lossy without losing quality [06:45] <klaxa> that's why it's called "lossy" [06:45] <klaxa> you cannot magically increase the quality of a video [06:45] <Dark-knight> if i can make a 60x60 picture turn into a high quality 1920x1080 picture why can't i do the same with a video? [06:45] <klaxa> what? [06:45] <klaxa> show me how you do that [06:45] <Zeranoe> ENHANCE http://www.youtube.com/watch?v=Vxq9yj2pVWk [06:46] <Zeranoe> Dark-knight: maybe if it's a solid color, or your talking about inches/cm [06:46] <ProducerSeal> ok umm [06:47] <ProducerSeal> is lossless raw [06:47] <ProducerSeal> or jsut a name [06:47] <ProducerSeal> my friend was being a bich about it [06:47] <Zeranoe> it is, but there might be better options [06:47] <ProducerSeal> lossless is not a format is it [06:47] <ProducerSeal> just means raw stream right [06:47] <Zeranoe> no, but dumping to raw isn't generally the best move [06:48] <ProducerSeal> nono im jus asking [06:48] <ProducerSeal> what is lossless [06:48] <ProducerSeal> is it a format? [06:48] <Zeranoe> no, its a compression type [06:48] <klaxa> lossless is a type of codec [06:48] <klaxa> raw is a lossless "codec", a lossless codec is not neccessarily raw though [06:48] <ProducerSeal> dafuq [06:49] <klaxa> x264 has a lossless mode for encoding [06:49] <Zeranoe> basically it means you aren't losing any quality, data wise [06:49] <klaxa> the result is lossless, it is not raw though [06:49] <klaxa> like... [06:49] <klaxa> when you have a text-file [06:49] <ProducerSeal> ok ill jus tell him [06:49] <klaxa> and compress it with zip [06:49] <Zeranoe> lol [06:49] <klaxa> it's lossless compression [06:49] <klaxa> but it's not raw, is it? [06:49] <ProducerSeal> omfg [06:49] <ProducerSeal> now were both confiz [06:50] <Dark-knight> what is raw? [06:50] <Zeranoe> hes explaining it in abstract terms... [06:50] <klaxa> i'm trying to dumb it down [06:50] <Dark-knight> lol JK [06:50] <ProducerSeal> i kno wat im saying [06:50] <ProducerSeal> losless is not compresed [06:50] <Zeranoe> raw is raw data, it's lossless in nature, but it isn't the definition of lossless [06:50] <klaxa> lossless can be compressed [06:50] <ProducerSeal> but he said its a compressed [06:50] <ProducerSeal> oh [06:51] <ProducerSeal> wait [06:51] <ProducerSeal> how can lossles be compresed [06:51] <Zeranoe> like zip [06:51] <Zeranoe> or 7z [06:51] <ProducerSeal> then its not losles [06:51] <Zeranoe> no... your rearranging the data, not removing any [06:51] <ProducerSeal> well dun even bring up zip [06:51] <ProducerSeal> lol [06:51] <ProducerSeal> ya exactly [06:51] <ProducerSeal> lossless is raw [06:51] <ProducerSeal> cant be compresed [06:52] <klaxa> WTF NO [06:52] <klaxa> no no no no no [06:52] <ProducerSeal> no [06:52] <Zeranoe> raw is a form of lossless [06:52] <ProducerSeal> he said zip [06:52] <ProducerSeal> zip doesnt count [06:52] <ProducerSeal> im talking about video audio compresion [06:52] <Zeranoe> you clearly don't understand the concepts here [06:53] <Zeranoe> ProducerSeal: read up: http://en.wikipedia.org/wiki/Lossless_compression [06:53] <ProducerSeal> no i did [06:53] <ProducerSeal> thats the problem [06:53] <klaxa> ProducerSeal: please run: ffmpeg -codecs | grep -E "^ ..V..S" [06:53] <Zeranoe> you didnt [06:54] <klaxa> it will list all video codecs that support lossless encoding [06:54] <klaxa> which are compressed [06:54] <klaxa> and lossless [06:54] <klaxa> compressed and lossless are not mutual exclusive [06:54] <klaxa> flac audio is lossless [06:54] <klaxa> tta audio is lossless [06:54] <klaxa> ffv1 video is lossless [06:54] <klaxa> huffyuv is lossless [06:54] <ProducerSeal> right [06:54] <ProducerSeal> which means lossless is raw [06:54] <Zeranoe> so what is lossless? [06:54] <Keshl> No. [06:54] <klaxa> NO [06:55] <ProducerSeal> yes [06:55] <klaxa> NO NO NO [06:55] <Zeranoe> oh god [06:55] <klaxa> LOSSLESS IS NOT RAW [06:55] <Keshl> Mind if I explain this to him? [06:55] <Keshl> *God [06:55] <ProducerSeal> i told u [06:55] <Keshl> I think I can. <É< [06:55] <klaxa> ProducerSeal, if you are just trolling you can just leave [06:55] <ProducerSeal> gzip compresion doesnt count [06:55] <Zeranoe> hes trolling [06:55] <ProducerSeal> gzip compresion doesnt count!!!!!!!!!! [06:55] <ProducerSeal> i told u [06:55] <ProducerSeal> god damit [06:55] <Keshl> *God [06:55] <Keshl> And yeah, nevermind, you're right. [06:55] Action: Keshl pawwaves ProducerSeal away and resumes doing STUFF. -É-. [06:55] <ProducerSeal> ill jus tel my frind he is a idiot [06:56] <ProducerSeal> and ill tel him that he is talking about compression that doesnt even mater [06:56] <Zeranoe> yeah, because clearly you understand this more than him [06:56] <klaxa> obviously [06:56] <ProducerSeal> unless ur talking about actualy codec comrpesion [06:56] <Dark-knight> lol i understood it better then him [06:56] <klaxa> ProducerSeal, just leave please [06:56] <klaxa> if you are unable to understand [06:56] <klaxa> stop wasting our time [06:56] <Zeranoe> trolls arent too smart [06:57] <Dark-knight> hahaha [06:57] <another> what klaxa said [06:57] <klaxa> you are showing no will to learn where you are wrong [06:57] <ProducerSeal> ok Zeranoe [06:57] <klaxa> all you are trying to do is to prove your friend wrong [06:57] <klaxa> even though he is right [06:57] <klaxa> so just go away [06:57] <ProducerSeal> wats the diff then between compression of video and compresion like zip [06:58] <Zeranoe> ProducerSeal: You need to be more specific [06:58] <ProducerSeal> right [06:58] <ProducerSeal> u see how idiotic this is now? [06:58] <klaxa> Zeranoe, why are you even responding? [06:58] <another> zip is a lossless codec. you don't lose data [06:58] <Dark-knight> its called a boot to the face. [06:58] <Dark-knight> BEGONE NAVE [06:58] <ProducerSeal> ya exactly [06:58] <ProducerSeal> which is why u need diff words for each [06:59] <ProducerSeal> coz most ppl dont get into the details [06:59] <ProducerSeal> they jus yap about lossless [06:59] <klaxa> *YOU* don't get into the details [06:59] <another> different word for what? [06:59] <klaxa> i listed about 5 codecs which provide lossless encoding for video and audio [06:59] <re-G_> I think that _real_ lossless can be decoded and you will get the original file (wav->flac->wav), but H.264 lossless mode is _visually_ lossless, not real. Am I right? [06:59] <klaxa> you said those are raw [06:59] <Zeranoe> Anyway, anyone know how to calculate the displayed pixels if I know the DAR, SAR, and res of the video? [06:59] <klaxa> you are obviously stupid [06:59] <Keshl> re-G_: Depends. [06:59] <Keshl> re-G_: h.264 has a real lossless mode (Set -crf 0) [06:59] <klaxa> re-G_: x264 lossless is true lossless [07:00] <klaxa> there is no "false lossless" [07:00] <ProducerSeal> Keshl, yes we know [07:00] <ProducerSeal> gah [07:00] <Keshl> re-G_: However, you can make it /visually/ lossless instead too. Generally -crf 18 is considered that. [07:00] <klaxa> there is either lossless or lossy [07:00] <Keshl> But of course, "visually" depends on the person looking at it. [07:00] <ProducerSeal> ya i kno [07:00] <ProducerSeal> i was teling them [07:00] <ProducerSeal> that zip compresion doesnt count [07:00] <ProducerSeal> wen talking about video [07:01] <Zeranoe> It's weird because ffplay is outputting a pretty weird size [07:01] <klaxa> Zeranoe: http://forum.doom9.org/showthread.php?t=106656 [07:01] <another> oh god [07:01] <Zeranoe> but I guess with such different dar and sar it's bound to happen... [07:01] <klaxa> maybe that helps? [07:01] <Keshl> And it does compress.. "Fairly" well. Depends a lot on content, obviously. [07:01] <ProducerSeal> no im saying if ur not losing quality [07:02] <ProducerSeal> just to say ur compressing coz ur a nerd [07:02] <ProducerSeal> ? [07:02] <Zeranoe> klaxa: Do you know if ffplay outputs 1:1? [07:02] <Keshl> *God -- Regardless, re-G_, point is H.264 does have a truebluestew lossless mode. Just don't expect your computer to be able to play it. XD [07:02] <klaxa> explain 1:! [07:02] <klaxa> *1:1 [07:02] <ProducerSeal> wen i talk about compresin media im talking about lossy [07:02] <ProducerSeal> end of story [07:02] <re-G_> Keshl: haha, ok :D [07:02] <Dark-knight> hey seal is your connection getting choopy? [07:02] <ProducerSeal> lossless compression is just a fkn idiocy [07:02] <Zeranoe> klaxa: When the video pops up, is it displaying the actual size? or does it get resized in the process somehow [07:02] <ProducerSeal> its pointless to even bring that up [07:02] <klaxa> ProducerSeal: explain that to all the audiophiles, kthxbai [07:03] <ProducerSeal> its pointless to even bring that up [07:03] <ProducerSeal> comon [07:03] <Dark-knight> hey seal is your connection getting choppy? [07:03] <klaxa> Zeranoe: it should display it in the correct size [07:03] <klaxa> if your window manager doesn't interfere or something [07:03] <klaxa> the default window size should be the correct rendering size [07:04] <Zeranoe> so 720x480 [SAR 8:9 DAR 4:3] is actually 640x360? [07:04] <another> ProducerSeal: ok. so don't use zip, gzip, bz2, xz, rar, flac, etc. anymore [07:04] <klaxa> well let's try to do some math [07:04] <ProducerSeal> omfg dood [07:04] <ProducerSeal> stop [07:05] <ProducerSeal> u know what i said [07:05] <klaxa> we have 720x480 samples [07:05] <ProducerSeal> saying ur lossless has compression on it is fkn tarded [07:05] <klaxa> wait... hmm... [07:05] <klaxa> this won't work... [07:05] <ProducerSeal> and u sound like a fkn idiot [07:05] <klaxa> ProducerSeal: just fuck off already [07:05] <klaxa> seriously [07:05] <ProducerSeal> ya duh its a fkn computer format [07:05] <Dark-knight> his ip is 108.184.154.132 [07:06] <Dark-knight> just ping it [07:06] <ProducerSeal> obviously its gona be fkn algoed [07:06] <Keshl> Why not jus' add him to /ignore? oÉo? When he stops getting attention he'll go away. -É-. [07:06] <another> ProducerSeal: stop talking 'bout things you don't understand [07:06] <ProducerSeal> i do understand fool [07:06] <ProducerSeal> im trying to explain to you [07:06] <ProducerSeal> do u not get it? [07:07] <Zeranoe> klaxa: ffplay displays it with that res, something like MPC is a different res [07:07] <Dark-knight> ProducerSeal do you live in budapest? [07:07] <klaxa> huh? that is weird [07:07] <klaxa> is mpc not using libav*? [07:07] <Zeranoe> umm [07:07] <Zeranoe> i think so [07:08] <Zeranoe> MPC is 853x480 [07:09] <Keshl> o.O' Using H.264? I thought that didn't support odd numbers.. [07:09] <klaxa> according to the thread on doom9, mpc will be using a different SAR then [07:09] <klaxa> the thread i linked actually explains exactly that [07:09] <Zeranoe> Keshl: mpeg2video [07:09] <Keshl> Ohhh. -É-. [07:09] <klaxa> if you have a video sorce with 720x480 with SAR 8:9 it will result in a 4:3 video [07:10] <klaxa> with SAR 32:27 it will be 16:9 (which is roughly 853x480) [07:10] <klaxa> oh yeah that makes sense [07:10] <klaxa> divide 720 by 9 [07:11] <klaxa> then multiply by 8 [07:11] <klaxa> you get 640 [07:11] <Zeranoe> so ffplay is right? [07:11] <klaxa> probably [07:11] <Zeranoe> it seems small... [07:11] <klaxa> does the video look distorted in any player? [07:12] <klaxa> if so, the distorted one is probably wrong [07:14] <Zeranoe> it looks fine in both, just smaller in ffplay. plus it can't be that resolution in ffplay, without some scaling [07:14] <Zeranoe> but thats what it pops open as [07:14] <Dark-knight> hey ProducerSeal you live at 4188 Oak Pl Dr. right? [07:14] <klaxa> is the aspect ratio the same? [07:14] <Dark-knight> ill send a card [07:14] <klaxa> Dark-knight: knock it off pleas [07:14] <klaxa> *please [07:14] <Dark-knight> am i not allowed to dox in her? [07:15] <Dark-knight> here* [07:15] <klaxa> no [07:15] <Dark-knight> awww [07:15] <Dark-knight> no fun [07:15] <Dark-knight> fine ill obay [07:15] <klaxa> what's with all the skiddies tonight? [07:15] <ProducerSeal> ill beat ur fkn ass [07:15] <ProducerSeal> fkn snitch [07:15] <ProducerSeal> faget [07:15] <Dark-knight> lol [07:15] <relaxed> why don't I have ops in this channel yet? [07:15] <ProducerSeal> the internet age [07:15] <klaxa> relaxed: i wish i knew [07:16] <ProducerSeal> breeding a bunch of snich fagets [07:16] <klaxa> could use some ops for days like this [07:16] <ProducerSeal> come get it queef [07:16] <klaxa> then again, pretty rare [07:16] <Zeranoe> klaxa: Yeah, aspects are both 16/9 [07:16] <klaxa> huh [07:16] <ProducerSeal> ill fkn hang u from that fkn power cord [07:17] <Dark-knight> good bye seal, enjoy your ban [07:17] <relaxed> Zeranoe: what does ffmpeg report as the SAR for both video? [07:17] <klaxa> oh right 640x360 is 16:9 all right [07:17] <Zeranoe> creeps me about a little that you found his address... [07:18] <klaxa> Zeranoe: it's probably just his ISPs address... [07:18] <Zeranoe> relaxed: both? its the same [07:18] <relaxed> which would be...? [07:18] <Zeranoe> 720x480 [SAR 8:9 DAR 4:3] [07:18] <Dark-knight> lol no klaxa that IS his address, why else would he get so mad? [07:19] <relaxed> Dark-knight Zeranoe please stop this offtopic garbage [07:19] <Dark-knight> ok sorry [07:19] <Zeranoe> ? [07:19] <klaxa> well like i said according to the thread that video should actually be 640x480 [07:19] <relaxed> the dar is probably wrong on one of the videos [07:20] <relaxed> SAR = DAR*(H/W) [07:20] <Zeranoe> relaxed: But MPC gets it right? [07:21] <relaxed> sometimes both the video stream and container can have this info, and be different [07:25] <Zeranoe> so don't trust ffplay? [07:25] <i336_> oookay.... google isn't being helpful right now... how do I specify the output soundcard in ffplay? (not ffmpeg) [07:25] <i336_> as in, for audio output :P [07:26] <relaxed> maybe using some SDL variable? [07:26] <i336_> O.o [07:26] <i336_> does ffplay use SDL for audio out? interesting [07:27] <relaxed> and video [07:27] <i336_> oh ok [07:28] <Zeranoe> relaxed: Are you a dev? [07:28] <relaxed> Zeranoe: you should file a bug report if ffplay doesn't behave correctly. [07:29] <relaxed> Not really, I have a handful of patches in. [11:26] <Keestu> join #libav [11:30] <Mavrik> hmm, does FLV support timestamp wrap? [11:34] <JEEB> the specification isn't too long, you could check [11:35] <JEEB> http://download.macromedia.com/f4v/video_file_format_spec_v10_1.pdf [11:35] <JEEB> it begins with f4v, and then the latter part is FLV [11:37] <bais> hi I'm using Linux Encoding install.sh and I have a problem [11:37] <bais> when I try to convert an x264 video it said Unknown encoder 'libx264' [11:43] <Mavrik> JEEB, I seem to be totally incompetent at Google for not finding that doc -_- [11:43] <Mavrik> thanks [11:44] <Keshl> bais: You gotta compile with --enable-x264. That's all I know, though. Anything about how to actually compile is beyond me. xwx [11:46] <bais> Keshl: thx I will try [11:46] <JEEB> Mavrik, but as far as I can see, it's a 0-UI24+UI8 timestamp value , the specification is rather silent about wrapping [11:46] <bais> in this moment: ==> build_libx264() Running make && make install :) [11:46] <JEEB> as in, going back to 0 [11:47] <JEEB> Mavrik, might want to ask fileformat@adobe.co [11:47] <JEEB> *com [11:47] <bais> I'm trying to use it on a youtube-like php portal called clipbucket [11:47] <Mavrik> mhm [11:47] <Mavrik> anyway, ffmpegs flv muxer chokes :) [11:49] <JEEB> well, lavf used to not support AAC with !44.1kHz audio rate at one point :P [11:49] <JEEB> of course timestamp wrapping /will/ make lavf barf for seeking and stuff [11:49] <JEEB> but that's the same thing for mpeg-ts as well [11:49] <JEEB> just ask adobe [11:49] <JEEB> and see what they respond [14:27] <troulouliou_dev> hi can somebody point me to a small easy exemple of opening an audio stream in raw and seek/pos .. in it like in a file ? [14:29] <JEEB> see the examples under docs [14:29] <JEEB> there's a demuxing/decoding example [14:30] <JEEB> then just look at the doxy for the libavformat seeking part [14:31] <troulouliou_dev> JEEB, yeah was in that direction atm :) thanks [14:37] <Oxymoron> Hey guys, anyone have experience with flv's? I'm using an avisynth script to join 2 videos together to form a video conversation, but unfortunately they get out of sink eventually. Any way to be sure things stay lined up? [14:37] <Oxymoron> So initially i start them with offsets that are stored in the DB at the time of publishing the streams, and it looks fine, but 10-15 mins into playback one video will wander ;( [14:38] <Oxymoron> brb [15:43] <bais> is it possible, with 1 line of syntax, create 3 different output? like low medium high files [15:43] <bais> other thing: I have this problem atm: http://pastebin.com/czUEV5JD [15:44] <Keestu> hello, i have a question about size of packet and complete frame. is it correct to think in such a way that sum(all packets size) = size (complete frame?) [16:24] <Rural> Why does the following generate out-of-sync audio? avconv -f alsa -ac 2 -i pulse -r 15 -f x11grab -i :0.0 -acodec flac -vcodec libx264 -preset ultrafast -crf 0 -threads 0 output.mkv [16:25] <Rural> If just leave the framerate at the default, the audio is sync'd. [16:27] <Rural> Here is the output from 'avconv -version': http://pastebin.com/k2BCLKzG [16:29] <Rural> I get around the issue by doing the initial capture at the default frame rate, then reencode to my distribution format and framerate in second pass. But if there is a bug here, it might be harder to work around for others. [16:36] <JEEB> just gonna note that avconv doesn't come from the FFmpeg project, but the Libav project, as the copyright says :) ( #libav ) Also, I think there was a separate frame rate setting [16:36] <JEEB> you're just forcing the input to be read as 15fps [16:36] <JEEB> -framerate it seems [16:37] <JEEB> although the documentation for x11grab notes usage with -r :s [16:46] <Rural> JEEB: Oops! Thanks for pointing those two things out. [16:48] <lkiesow> What is the easiest way of getting a list of all frames selected by a select filter? [16:49] <lkiesow> Atm I'm blacking them out and then run the blackframe filter [16:49] <troulouliou_dev> hi does anybody know a good tuto to raw copy an audio track from a matroska file to a file; [16:50] <troulouliou_dev> i need only the cluster block data; not any metadata [18:01] <rsdrsdrsd> Can someone help me on this issue: http://pastebin.com/NGxPWzyX [18:07] <eurobit> can ffmpeg insert a piece of clipart over a videa [18:20] <durandal_1707> eurobit: see overlay filter [18:25] <rsdrsdrsd> is it normal that when making every 10 seconds a screenshot of a video it gets in a loop and it makes 10000 of it? [18:28] <durandal_1707> rsdrsdrsd: select filter should be better [18:34] <rsdrsdrsd> ok i'll look into that one [18:38] <rsdrsdrsd> but I need it every 10 seconds because I want to build an vtt file with screenshots every 10 seconds [18:39] <durandal_1707> have you read documentation of select filter? [18:43] <rsdrsdrsd> I am trying to do so [18:45] <eurobit> thanks durandal_1707 [18:45] Action: eurobit thinks that is one huge man page ;) [18:47] <durandal_1707> there are some example on trac.ffmpeg.org/wiki [18:48] <rsdrsdrsd> so vf select="not(mod(n\,10*fps))" should do the magic ;-) [18:54] <rsdrsdrsd> why does the wiki say something else? [18:58] <durandal_1707> no, but it have same examples and images .... [19:00] <rsdrsdrsd> is the fps variable available in the function or do I have to calculate it myself? [19:07] <durandal_1707> you do not need fps [19:07] <durandal_1707> use timestamp [19:16] <eurobit> rsd*3 do you do ffmpeg for a living? [19:21] <OnkelTem> Hi all. I try to follow this guide https://encrypted.pcode.nl/blog/2010/10/17/encoding-webm-using-ffmpeg/ to transcode a screencast video created with the same ffmpeg to WEBM [19:22] <OnkelTem> but what I get is just a small file with no video [19:23] <klaxa> i think vpre is outdated [19:23] <klaxa> also pastebin your complete input with the complete console output [19:24] <OnkelTem> http://pastebin.com/t4ce4rEM [19:24] <klaxa> barely anyone does two-pass encodes anymore too [19:24] <klaxa> that's not the output of ffmpeg [19:24] <OnkelTem> oh, sorry [19:26] <OnkelTem> klaxa: http://pastebin.com/SKiyKpVa [19:27] <OnkelTem> (btw, what does it mean "this program is deprecated"? does it mean ffmpeg itself?) [19:27] <klaxa> it means the binary shipped with debian and debian based distributions [19:27] <klaxa> with the libav package [19:27] <klaxa> or rather the avconv package [19:27] <klaxa> that being said, the support channel for avconv is #libav [19:28] <Oxymoron> I'm trying to convert an flv to h264 mp4 with strange results. Using avi synth and DirectShowSource I get audio that doesn't syncronize with the video. Has anyone come across this before? [19:28] <OnkelTem> Thank you [19:28] <klaxa> the version you are using is also very outdated [19:31] <OnkelTem> klaxa: I've updated to 0.10.11 from this ppa https://launchpad.net/~jon-severinsson/+archive/ffmpeg?field.series_filter=p... [19:32] <klaxa> the current version is 2.1 [19:32] <OnkelTem> oops [19:32] <klaxa> you can get one of those [19:32] <klaxa> wait no... [19:32] <OnkelTem> here is the output: http://pastebin.com/DPpiSavV [19:33] <klaxa> those don't support x11grab [19:33] <OnkelTem> In this particular case I'd like to not rerecord the video. [19:34] <OnkelTem> It's strange the versions are so different. Maybe they concern different packaging? [19:34] <klaxa> well for starters try this: ffmpeg -i video.mpg -s 1280x760 -c:v libvpx video.webm [19:35] <klaxa> or rater skip the -s part entirely too [19:36] <OnkelTem> huh, would glad to! [19:36] <klaxa> actually... [19:36] Action: OnkelTem hates outdated blog posts [19:36] <klaxa> the input has audio, right? [19:36] <klaxa> do you want to preserve that? [19:36] <klaxa> if so, just try to run: ffmpeg -i video.mpg video.webm [19:37] <OnkelTem> right. My first command was to not include audio just for testing. With your suggested command audio seems to be preserved (vorbis) [19:37] <klaxa> that should select the correct default values for codecs and quality [19:37] <klaxa> if you are unsatisfied with the result we can tweak it to increase or decrease quality [19:38] <OnkelTem> klaxa: it works. And you are right, I'd like to increase video q :) [19:41] <klaxa> you can try to use the flag -quality which works with the libvpx encoder [19:41] <klaxa> so: ffmpeg -i video.mpg -quality best video.webm [19:42] <klaxa> if you run ffmpeg --help encoder=libvpx it will show all available options for libvpx [19:43] <klaxa> i'll be afk for a while [19:43] <OnkelTem> klaxa: I see, good! [19:52] <llogan> OnkelTem: http://trac.ffmpeg.org/wiki/vpxEncodingGuide [20:19] <Nosomy> have the way to cut a piece of video using ffmpeg and copy a video? [20:39] <rsdrsdrsd> eurobit why ar e you asking that? [20:47] <rsdrsdrsd> still not a working solution to select an image every x seconds using the select filter [20:48] <rsdrsdrsd> can somebody maybe explain how to do it using timestamps? [20:48] <rsdrsdrsd> is it the BT optionin the select filter and how to implement it [20:59] <Zeranoe> Does AAC have a max bitrate? like 320k for MP3? [21:03] <Oxymoron> Speaking of, it takes forever to encode my flv to h264, what's a lower acceptable bitrate? Now I'm setting to vid 512k, audio 48k. Also, will this speed up the process? [21:04] <sacarasc> Using a faster x264 preset will make it go faster, too. [21:05] <OnkelTem> Does anybody know how to increase volume of the audio in a WEBM video? [21:07] <llogan_> Nosomy: ffmpeg -ss 12 -i input -t 30 -codec copy -map 0 output [21:07] <JodaZ> OnkelTem, oh come on, that should be easy to google, use the volume audio filter: -af volume=2.0 [21:08] <llogan> http://ffmpeg.org/ffmpeg-filters.html#volume [21:08] <Zeranoe> Does AAC have a max bitrate? like 320k for MP3? [21:09] <JodaZ> i don't think going over 320k makes sense, you'd use lossless by then [21:09] <Zeranoe> I agree, but http://ffmpeg.zeranoe.com/forum/viewtopic.php?f=13&t=1780 [21:09] <brontosaurusrex> Zeranoe, i don't think so [21:11] <brontosaurusrex> well, every lossy encoder will get saturated at some point [21:11] <OnkelTem> JodaZ: it says: Unrecognized option 'af' [21:12] <JodaZ> OnkelTem, then your ffmpeg is too fuckin old oO [21:12] <OnkelTem> JodaZ: one search result http://trac.ffmpeg.org/wiki/How%20to%20change%20audio%20volume%20up-down%20w... [21:12] <OnkelTem> JodaZ: damnit. I wish to update [21:12] <JodaZ> OnkelTem, it is easy, you can just download a static build [21:12] <llogan> or you're not using ffmpeg but some shit from a fork [21:13] <Zeranoe> OnkelTem: What OS are you on [21:13] <JodaZ> the shit of a fork is sadly lacking in filters, but it has the -af option [21:14] <OnkelTem> llogan: most likely. I'm on Ubuntu 12.04 and had updated ffmpeg from a PPA which claims it provides newer ffmpeg. Well, it really updated ffmpeg, from 0.8.x to 0.10.x [21:14] <llogan> Zeranoe: just tell him "bitrate=file size/duration" and he can find out himself if he doesn't want to look at the code or the specifications. [21:14] <JodaZ> OnkelTem, i am just using this http://johnvansickle.com/ffmpeg/ [21:14] <JodaZ> OnkelTem, Zeranoe also has some [21:14] <llogan> OnkelTem: the 0.10 branch is considered old [21:15] <Zeranoe> For Windows [21:15] <JodaZ> oh, didn't notice that [21:17] <OnkelTem> JodaZ: what OS are you on? I'm getting static build you have linked [21:17] <OnkelTem> Or rather, how to "install" it? Just copy binaries to /usr/local/bin? [21:17] <llogan> download, extract, execute. [21:17] <llogan> ./ffmpeg -i input output [21:17] <OnkelTem> ok [21:17] <JodaZ> OnkelTem, i am running debian wheezy, i don't even copied the binary anywhere and am just running it from where it is ./ffmpeg [21:18] <JodaZ> OnkelTem, but i guess you can copy it somewhere to your path if you like [21:18] <OnkelTem> thanks. Ok. [21:18] <llogan> if you want you can move it somewhere in your PATH [21:19] <OnkelTem> if it doesn't depend on hunderds of other files somewhere in the system - it's ok :) [21:19] <Nosomy> llogan, have a way to do a cut specifying frames? like --seek and --frames of x264? [21:19] <llogan> i'm not sure what uses the binary directly and what accesses the binary via your user's PATH as compared to using the full path to the binary. [21:20] <llogan> Nosomy: you can output a number of frames with -vframes or -frames:v [21:20] <llogan> there is also the select filter if you want a more advanced option [21:20] <Nosomy> thanks... [21:21] <JodaZ> does anyone know why i get a stop/pop in the sound if i concatenate two .ts files? [21:22] <JodaZ> llogan, i think i might post to the forums, the commands are slightly complicated [21:22] <llogan> that's what pastebin is for [21:22] <llogan> and which forums? [21:22] <JodaZ> the one mentioned in the topic [21:23] <llogan> oh. usually that's just me and burek answering anyway. [21:23] <llogan> you can use wahtever you prefer [21:29] <JodaZ> llogan, http://pastebin.com/DvM37nBe [21:30] <llogan> you're missing the console outputs [21:30] <JodaZ> they aren't relevant, theres no warnings/errors [21:30] <JodaZ> (also depend on how many of the debugging options i keep in) [21:30] Action: llogan moves on to other ffmpeg questions with console outputs [21:31] <JodaZ> llogan, sure, i'll paste em if you enjoy them [21:35] <JodaZ> llogan, http://pastebin.com/2XVASyM2 [21:40] <JodaZ> llogan, any idea? [22:59] <MDTech-us_MAN> hello [22:59] <MDTech-us_MAN> I need to convert a wma file to mp3 [23:03] <rsdrsdrsd> I have a problem with the following issue: http://pastebin.com/m5LkVEh3 [23:03] <rsdrsdrsd> I want to check the video by copying the bitstreams [23:03] <MDTech-us_MAN> when I execute "04 Track 4.wma" -acodec mp3 output.mp3" I get bit depth more then 16 not implemented [23:03] <MDTech-us_MAN> what do I do? [23:04] <rsdrsdrsd> but the command reduces the video to a very small size [23:04] <rsdrsdrsd> it also returns the error av_interleaved_write_frame(): Invalid argument [23:05] <MDTech-us_MAN> to be exact: Bit-depth higher than 16 is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented. [23:05] <MDTech-us_MAN> I executed "ffmpeg -i "04 Track 4.wma" -acodec mp3 output.mp3" [23:15] <rsdrsdrsd> really weird problem [23:16] <rsdrsdrsd> if I issue the copy command it cuts the video from 600mb to 2mb and strips a lot of data off [23:17] <Dark-knight> does it still work? [23:18] <rsdrsdrsd> yes [23:18] <Dark-knight> then what is the problem? [23:19] <rsdrsdrsd> but only plays 2 seconds or so [23:19] <rsdrsdrsd> total video is 10 minutes or so [23:19] <Dark-knight> ohhh ok [23:19] <rsdrsdrsd> and now it plays just 2 seconds of it [23:19] <Dark-knight> nvm [23:19] <rsdrsdrsd> and size has become much smaller [23:25] <rsdrsdrsd> anyone has a clue? [23:50] <rsdrsdrsd> so doing copy stream over an output file which just was created by also copying the stream results in a corrupt mpeg [00:00] --- Thu Feb 27 2014