[Ffmpeg-devel-irc] ffmpeg.log.20120803

[burek]

[00:32] <Jax> llogan: any idea? http://dpaste.com/780294/
[04:02] <cinelli> hey, been trying to get  some video's reencoded to .avi / something playable for some detectives that I'm working with. The files are -umv (unlimited motion vector) from a CCTV
[04:04] <cinelli> I friend of mine was messing around with vlc player, and managed to get one to avi format, so I know they can be converted.. But, he's an asshole and was just clicking buttons and didn't think it would be a good idea to write it down ...
[04:22] <sacarasc> Can ffplay play them?
[07:59] <newenc> how can i encode proves 422 file to mpeg2 ps with cbr
[08:00] <newenc> I've specified each of these (-maxrate -minrate -vb -bt -bufsize) at 15Mi but media info still reports VBR
[08:05] <spaam> newenc: use -b bitrate if you want cbr
[08:09] <newenc> nope that gives me a whopping 7Mi bitrate still VBR
[09:19] <spaam> newenc: what commandline are you using?
[09:20] <spaam> newenc: ffmpeg -i file -vcodec mpeg4 -b 1000k  file.avi  should give you an .avi file with mpeg4 and 1000k cbr bitrate..
[09:22] <newenc> here it ishttp://pastebin.com/0Gp6bwma
[09:22] <newenc> http://pastebin.com/0Gp6bwma sorry
[09:25] <spaam> you want cbr stream?  why do you use -vb 15Mi -minrate 15Mi -maxrate 15Mi ?
[09:25] <spaam> if you want it
[09:26] <spaam> oh nvm
[09:28] <spaam> newenc: http://ffmpeg.org/ffmpeg.html#Video-and-Audio-file-format-conversion if you see the example there they are using -b and not -vb
[09:30] <newenc> i have used the same args bit with -b instead and it produces same output
[09:34] <newenc> output file has constant audio br but video is vbr
[09:35] <soulstitchmmo> anyone around to explain why the only sound I can record is what comes through my microphone?
[10:10] <oldwzd> Incompatible pixel format 'bgra' for codec 'libx264', auto-selecting format 'yuv420p'
[10:12] <Jax> hello, i'm having trouble with this: http://dpaste.com/780294/
[10:12] <Jax> trying to extract a part of an MTS movie
[10:16] <JEEB> oldwzd, there's no way to encode alpha channel into H.264. And most things like hardware decoders etc. want 4:2:0 YCbCr. It's possible to encode RGB as 4:4:4 with a new enough libx264, but the support for that would be really limited
[10:16] <JEEB> QuickTime adds alpha channel data into the
[10:16] <JEEB> SEI or whatever
[10:16] <JEEB> which is not documented
[10:17] <JEEB> (and only works in QT)
[10:18] <oldwzd> JEEB: so its because i have compossite running then i gues
[10:19] <JEEB> uhh, it's because you have a colorspace that can't be encoded as-is, and in most cases people want 4:2:0 H.264
[10:19] <JEEB> f.ex. Flash only supports 4:2:0, 4:2:2
[10:20] <JEEB> hardware decoders in various things only support 4:2:0
[10:20] <JEEB> if you want something else you need to have a new'ish libx264 and set the pix_fmt you want
[10:20] <JEEB> but yes, if you really are doing something with an alpha channel that will get destroyed
[10:21] <oldwzd> im recording my desktop in linux
[10:37] <sibi_a> Hello folks! Do you offer help for frei0r plugins ?
[10:38] <sibi_a> I was using ffmpeg to distort some videos for fisheye (frei0r defish0r plugin),
[10:38] <sibi_a> but the results are quite pixelated.
[10:39] <sibi_a> I have set a higher bitrate, played around with qscale option, still the results are pixelated
[10:42] <burek> oldwzd why would you need an alpha channel if you just record your desktop?
[10:43] <burek> sibi_a can you please use a pastebin site (like www.pastebin.com) to show your ffmpeg command and the complete console output?
[10:48] <sibi_a> burek: My bad! Here it is - http://pastebin.com/At2HdEeX
[10:49] <sibi_a> I tried setting higher bitrates  as well as the qscale options. I'm also not recording audio (-an option)
[10:49] <oldwzd> burek: i dont
[10:51] <burek> sibi_a, you can't use -vcodec copy if you apply a filter to the input
[10:52] <burek> frei0r filter*
[10:52] <burek> oh my bad..
[10:52] <burek> it's acodec
[10:52] <burek> well, you didn't specify -vcodec
[10:52] <burek> so ffmpeg defaults to something.. who knows what..
[10:53] <burek> try adding after "-acodec copy" this: -vcodec libx264 -crf 18 -preset medium
[10:56] <sibi_a> okay. I think I don't have libx264, crf, preset options
[10:56] <sibi_a> Unrecognized option 'crf'
[10:56] <sibi_a> let me try to get them
[10:57] <burek> well, try just adding -vcodec mpeg -q 1
[10:58] <burek> if you prefer mpeg4
[10:58] <burek> or increase -b
[10:58] <sibi_a> I tried increasing -b to 1000k , still the same results
[10:58] <burek> but, if you can, use libx264, because it's awesome :)
[10:58] <sibi_a> sure, yes. :)
[11:01] <deuxbierre> Hello, I shall like I can encode a video of YouTube flv towards avi for an archos 2 vision, all my manipulations or tries(essays) with software failed, can use me. If anybody knows parametres for archos 2 vision?
[11:05] <burek> deuxbierre, did you use Google Translate? :))
[11:07] <deuxbierre> yes burek
[11:08] <deuxbierre> or reverso
[11:09] <burek> well, go to archos 2 vision website and read the specifications to find out what kind of video do you need
[11:09] <burek> :)
[11:12] <oldwzd> Stream #1:0: Video: rawvideo (BGRA / 0x41524742), bgra, 1024x600, 589234 kb/s, 29.97 tbr, 1000k tbn, 29.97 tbc
[11:13] <deuxbierre> there is an video on archos 2 vision original i paste the result http://paste.ubuntu-fr-secours.org/src-108387  On web site of archos, they say .avi that's all.
[11:13] <burek> oldwzd can you please use a pastebin site (like www.pastebin.com) to show your ffmpeg command and the complete console output?
[11:14] <burek> deuxbierre, why grep?
[11:15] <deuxbierre> i don't know, this command isn't me
[11:15] <burek> btw, that kind of video you can get with ffmpeg using: ffmpeg -i input -vcodec mpeg4 -acodec mp2 output
[11:19] <sibi_a> burek: you're awesome, giving help for 3 people at same time :)
[11:20] <burek> :beer: :)
[11:20] <sibi_a> I just tried recompiling ffmpeg with x264. But results are the same, quite pixelated. I guess it has to do with the frei0r plugin. Dunno.
[11:20] <burek> sibi_a can you please use a pastebin site (like www.pastebin.com) to show your ffmpeg command and the complete console output?
[11:21] <sibi_a> http://pastebin.com/BEKhKYDE
[11:22] <burek> sibi_a remove -b 500k
[11:22] <deuxbierre> Burek, I am invalid(useless) command(order) under ffmpeg there, can give me myself the typical line that I should bring in for éffectuer the conversion? By leaving of a video YouTube mp4 or flv, towards the size(format) of the first one paste http: // paste.ubuntu-fr-secours.org / src-108387
[11:22] <deuxbierre> Thanks for all
[11:22] <burek> also, if you use -an, no need for -acodec copy
[11:23] <burek> deuxbierre, can you ask here in your native language?
[11:23] <deuxbierre> je peux ecrire en francais ?
[11:23] <ubitux> deuxbierre: vu ton niveau d'anglais c'est ptet mieux ouais
[11:24] <burek> yes, just ask in french :)
[11:25] <ubitux> burek: so you speak french now ? ;)
[11:25] <deuxbierre> reverso ... je voudrais encoder des videos de youtube flv ou mp4 vers avi avec les valeurs soient disant supporté par l'archos avec la video qu'il y a dessus d'origine et qui est la  http: // paste.ubuntu-fr-secours.org / src-108387
[11:25] <burek> not quite :) but it's easier for me to translate what he says in french, then to let him translate what he thinks is understandable :)
[11:26] <deuxbierre> i undestand burek thanks lol
[11:26] <burek> deuxbierre, ok, use this line: ffmpeg -i input.avi -vcodec mpeg4 -b 1M -acodec mp2 -ac 2 -ar 44100 -ab 64k output.avi
[11:27] <deuxbierre> ok burek je te remerci je teste desuite
[11:27] <burek> instead of -b, use -b:v
[11:27] <burek> ffmpeg -i input.avi -vcodec mpeg4 -b:v 1M -acodec mp2 -ac 2 -ar 44100 -ab 64k output.avi
[11:27] <deuxbierre> ok
[11:28] <deuxbierre> the file input in your exemple is .avi mine is .mp4
[11:29] <burek> then use input.mp4
[11:29] <burek> replace "input.avi" with the file name of your input
[11:29] <deuxbierre> of course, i'm bad
[11:29] <GA-Flix> hey guys, short question: i have installed zeranoe's 32 and 64 bit minGW_w64 compiler, but i don't get a windows executable file :/ i used --cross-prefix=mingw-w64-x86_64 and --arch=x86 but it still doesn't run; any quick solutions?
[11:29] <burek> GA-Flix, did you read his blog with instructions?
[11:30] <deuxbierre> ffmpeg: unrecognized option '-b:v'
[11:30] <burek> deuxbierre, then you have old ffmpeg.. replace -b:v with -b :)
[11:30] <GA-Flix> burek, yes, i did :/ but i dun't know how i say exactly which compiler shall be used :/
[11:31] <burek> deuxbierre if -b 1M doesn't work, try -b 512k
[11:31] <burek> GA-Flix, well last time I checked, there was a detailed, step-by-step instruction tutorial.. so you can't miss
[11:31] <deuxbierre> FFmpeg version SVN-r0.5.9-4:0.5.9 ok burek
[11:32] <burek> deuxbierre, that's ancient..
[11:32] <GA-Flix> burek, do you have a link to that? (i used http://ffmpeg.org/trac/ffmpeg/wiki/UbuntuCompilationGuide#ffmpeg)
[11:32] <GA-Flix> (& http://ffmpeg.zeranoe.com/blog/?p=106)
[11:33] <burek> GA-Flix, on that 2nd link, scroll down and find "Here are the steps to get the script running:"
[11:34] <GA-Flix> burek, yeah, the script itself installed mingw perfectly, but how do i say to my ffmpeg files that they shall use THAT?
[11:34] <burek> the script should take care of the compilation and building of ffmpeg
[11:35] <deuxbierre>  -vcodec mpeg4 -b 512K  -acodec mp2 -ac 2 -ar 44100 -ab 64k 'file.avi'  is run
[11:35] <deuxbierre> je teste sur l'archos
[11:36] <deuxbierre> Grrr format non reconnu
[11:37] <GA-Flix> burek, i ran the script in my /mingw_w64 folder and in there i have now "mingw-w64-i686" and "mingw-w64-x86_64" as directories and "mingw-w64-build-3.0.6" as file
[11:37] <burek> GA-Flix, could you please ask in http://ffmpeg.zeranoe.com/forum/
[11:37] <GA-Flix> okay
[11:37] <burek> deuxbierre, can you type ffmpeg -i file.avi
[11:38] <burek> and use pastebin to show the result
[11:39] <deuxbierre> tu veux le resultat encodé en avi de la video mp4 ?
[11:39] <burek> yes, I want to see what the result was
[11:41] <deuxbierre> burek http://paste.ubuntu-fr-secours.org/src-108388
[11:42] <ubitux> ffmpeg 0.5
[11:42] <ubitux> please.
[11:42] <ubitux> it's yeaaaars old
[11:42] <ubitux> just upgrade
[11:43] <ubitux> https://ffmpeg.org/download.html
[11:44] <sibi_a> burek: I was waiting until you take a breather. :) I removed -acopy, -b. The same problem. Well, the pixelation isn't heavy. But noticeable. I guess it has to do with the plugin
[11:44] <deuxbierre> https://launchpad.net/~jon-severinsson/+archive/ffmpeg all right ?
[11:45] <sibi_a> I'm trying to distort videos to fisheye for projection in a dome. I don't know a better way than the frei0r plugins. But with this pixelation, it's kind of unuseable :(
[11:45] <burek> deuxbierre, try to download this http://dl.dropbox.com/u/24633983/ffmpeg/index.html
[11:45] <burek> extract and run with ./ffmpeg
[11:46] <deuxbierre> ok
[11:46] <burek> sibi_a did you try removing -b 500k
[11:46] <sibi_a> yes, I did
[11:47] <burek> im not sure if ffplay supports filters
[11:47] <burek> but try this if you can
[11:47] <burek> ffplay input.avi -vf frei0r=defish0r:0.75:n:0.666:0:0.0:0.0:0.25:0.0
[11:47] <burek> just to see if you still get pixelated result
[11:48] <burek> so that we know it's not the problem with encoding
[11:48] <burek> btw, sibi_a, you can also try that static version, because it's newer than yours
[11:49] <sibi_a> yes, the same. Looks like ffplay supports filters, it gets distorted to fisheye. But with pixelation
[11:49] <burek> if that static build still shows pixelation, then it's a bug/issue in frei0r filter
[11:50] <deuxbierre> http://paste.ubuntu-fr-secours.org/src-108389
[11:50] <burek> deuxbierre, that is your original (old) ffmpeg
[11:50] <burek> new one you need to start with ./
[11:51] <burek> (go into the directory where you downloaded/extracted it)
[11:51] <burek> and just type ./ffmpeg <options> ...
[11:53] <deuxbierre> ok
[11:54] <deuxbierre> ./ffmpeg: Aucun fichier ou dossier de ce type
[11:54] <burek> deuxbierre, you need someone who knows how to use linux to help you a little bit :)
[11:55] <roxlu_> hi!
[11:56] <deuxbierre> ./ffmpeg : fichier binaire impossible à lancer
[11:56] <roxlu_> I asked this in #libav too, but maybe someone here knows this.
[11:56] <roxlu_> When I use av_read_frame to get a AVPacket from a .mp4 file, what is a correct way to copy the packet into another buffer so I can synchronise the video and audio?  Do I need av_dup_packet
[12:03] <sibi_a> burech: I don't think the static builds are built with frei0r plugins. And my best guess is that the problem has to do with the plugin. So I will seek help with frei0r.
[12:03] <sibi_a> Thank you for the help so far !
[12:05] <burek> not plugins, filters
[12:06] <burek> deuxbierre, do you have 32bit or 64bit linux?
[12:06] <burek> roxlu_, did you read in the source code, how does ffmpeg do it?
[12:07] <roxlu_> burek: no my first step was checking the documentation
[12:07] <roxlu_> but thanks for the hint, I'll look into ffmpeg
[12:11] <deuxbierre> 32
[12:12] <deuxbierre> 10.04 26.32-41-generic-pae
[12:40] <deuxbierre> ffmpeg
[12:40] <deuxbierre> ffmpeg version 0.10.4-6:0.10.4-0ubuntu0jon2~lucid2 Copyright (c) 2000-2012 the FFmpeg developers     j'ai refais ta commande burek, en -v:b 1M et en -b 512K toujours format non reconnu
[12:57] <deuxbierre> si quelqu'un sait ? http://paste.ubuntu-fr-secours.org/src-108391
[13:08] <deuxbierre> comme je galere pour une video
[13:11] <deuxbierre> on peut remplacer (Simple Profile) (FMP4 / 0x34504D46) par (Simple Profile) (XVID / 0x44495658) ???
[13:20] <deuxbierre> adieu monde cruel
[14:27] <codinho> is it possible to force audio decoder sample width to 16 bit?
[14:35] <Jax> how can i extract part of an MTS video? (target format MTS)
[14:36] <applegekko> did that guy with the CCTV video issue get it solved?
[14:37] <applegekko> i dont have it in my scoolback :(
[14:39] <Jax> shouldn't this just work? ffmpeg -i 00068.MTS -an -vcodec copy out.MTS
[14:39] <Jax> to copy one file to another basically...
[14:39] <Jax> Unable to find a suitable output format for out.MTS
[14:40] <JEEB> oh, that just means that it can't find what 'MTS' is supposed to be
[14:40] <JEEB> you want mpeg-ts
[14:40] <JEEB> out.ts
[14:40] <JEEB> should do it
[14:40] <JEEB> also you want no audio?
[14:40] <Jax> yeah
[14:41] <Jax> ah that worked. can i just rename it to MTS then?
[14:41] <JEEB> yes
[14:41] <JEEB> it's all the same, mpeg-ts inside
[14:41] <Jax> much love. thanks
[14:41] <JEEB> (transport stream)
[14:41] <JEEB> if you need to match up the package byte length, you might have to set some extra settings tho
[14:41] <JEEB> but in general, you should be good to go as -is
[14:42] <JEEB> (you can have 188 byte, 192 byte and 204 byte mpeg-ts packets)
[14:43] <Jax> hm
[14:43] <Jax> so -s 10 -t 3 would extract 3 seconds after the 10 seconds position, correct?
[14:43] <JEEB> not sure, also I remember seeing -ss too
[14:43] <JEEB> if it looks correct documentation-wise
[14:43] <JEEB> try it out
[14:43] <JEEB> http://ffmpeg.org/ffmpeg.html
[14:44] <Jax> ah yes. thanks,
[14:45] <Jax> bit rate is not set, this will cause problems
[14:57] <Jax> what's all this TS Invalid business about
[14:57] <Jax> i just recorded a video off of a Canon HD handycam and would like to cut out a portion.. shouldn't be that hard
[14:58] <Jax> PAR is 4:3 DAR 16:9, apparently fps is 50
[14:59] <Jax> everytime i extract a video i get duration 00:00 in vlc
[15:00] <Jax> http://dpaste.com/780706/
[15:00] <Jax> just trying to extract 2 seconds at 15s
[15:02] <JEEB> try putting -ss and -t before -i
[15:02] <JEEB> for the lulz
[15:03] <JEEB> also lol at dts < pcr
[15:06] <Jax> hm
[15:07] <Jax> ffmpeg -ss 15 -t 2 -s 960x540 -r 25 -i 00068.MTS -an -vcodec rawvideo template2.ts
[15:07] <Jax> is what i'm using now
[15:07] <JEEB> uhhh
[15:07] <JEEB> rawvideo = raw YCbCr or RGB depending on your colorspace
[15:07] <Jax> can use copy too
[15:08] <Jax> http://dpaste.com/780710/
[15:08] <Jax> gives weird stuff if i prepend -ss and -t
[15:13] <Element9> ffmpeg -formats lists arm codec but using "-acodec amr" gives me "Unknown encoder 'am'". Am I doing something wrong?
[15:13] <Element9> here's the command line: http://pastebin.com/ppWLidCt
[15:14] <Element9> I wanted to type: "Unknown encoder 'amr'"
[15:59] <root_> 15:58 [ Aikar           ] [ cyndis      ] [ ivanich__   ] [ mattg           ] [ root_          ] [ Tuxist         ]
[15:59] <root_> hi
[16:07] <root_> never mind
[16:17] <syssi> hi. i'm missing a52 support in ffmpeg (0.11.1).
[16:18] <syssi> is there some alternative around or do i miss something?
[16:18] <JEEB> a52 is ac3
[16:19] <JEEB> should be in libavcodec by default unless it's specifically disabled
[16:19] <syssi> up to now i'm using mux=ts, vcodec=h264, acodec=a52
[16:19] <syssi> JEEB: so it is renamed and i can use acodec=ac3 ?
[16:19] <JEEB> that doesn't sound like ffmpeg
[16:20] <syssi> JEEB: uh, yes.
[16:20] <JEEB> your question would most probably be better off around videolan people
[16:20] <JEEB> (because that looks like VLC settings)
[16:21] <syssi> JEEB: indeed it is. but i tracked down the proble to ffmpeg without mention it, sorry.
[16:21] <syssi> JEEB: but you're right. i should ask there.
[16:21] <JEEB> np
[16:21] <JEEB> #videolan methinks
[16:22] <syssi> thx :-)
[16:30] <fj> hello we are upgrading our old ffmpeg library to the latest version
[16:31] <syssi> back again. ;-) i reformulate my question.
[16:31] <fj> it seems that AVFormatParameters is taken out of the new version
[16:31] <syssi> in the past "ffmpeg -formats" lists a52 as en- and decoder.
[16:31] <fj> what should I use instead?
[16:32] <syssi> is there some replacement or is the a52 support missing?
[16:32] <fj> doc/APIchanges only mentions it is deprecated but not what it is replaced with
[16:32] <JEEB> syssi, the ac3 encoder is there
[16:32] <JEEB> should be LGPL, too
[16:32] <syssi> i think ac3 (raw AC-3) ins't the same like liba52?
[16:32] <JEEB> hmm
[16:33] <JEEB> it should be
[16:33] <syssi> ac3 should be the same?
[16:33] <JEEB> yes
[16:34] Last message repeated 1 time(s).
[16:34] <JEEB> http://wiki.multimedia.cx/index.php?title=A52
[16:35] <syssi> okay. :-) *fiddling*
[16:36] <JEEB> fj, seems like you're supposed to use demuxer-specific options now?
[16:38] <JEEB> oh yes, AVDictionary
[16:38] <JEEB> and then format-specific options :)
[16:43] <fj> thanks : )
[16:49] <syssi> http://pastebin.com/tM6mAwHd
[16:49] <syssi> this is a comparison of an old ffmpeg version and the new one.
[16:49] <syssi> in the past "formats" lists ATSC A/52A (AC-3)
[16:50] <syssi> the recent version provides raw AC-3, which isn't the same.
[16:50] <syssi> i guess right?
[16:51] <JEEB> I'm pretty sure it's the same thing
[16:52] <syssi> JEEB: why it is listed in the old version twice, than?
[16:52] <JEEB> and I'm pretty sure features haven't been removed with time, where they are and how they are shown has changed
[16:52] <JEEB> I have no idea
[16:52] <syssi> JEEB: in the past there was some --enable-a52 option at ffmpeg.
[16:52] <syssi> JEEB: this option is gone.
[16:53] <JEEB> that's because libavcodec's implementations overcame a separate library's
[16:53] <JEEB> that's all
[16:53] <syssi> hmm. okay. :-)
[16:53] <JEEB> that was done for some other decoding libraries as well
[16:54] <JEEB> libavcodec implementation is better -> cut separate library support off as it's pretty much useless
[17:49] <odinsbane> I ran ffmpeg from ubuntu and I get a warning that it is deprecated?
[17:49] <sacarasc> You're not running ffmpeg, but libav which is a fork.
[17:49] <JEEB> that's because ubuntu uses the libav fork, and they deprecated it in favor of a somewhat rewritten tool called 'avconv'
[17:50] <JEEB> thus, the ffmpeg notion is of the command line tool within their project, not the ffmpeg project or the ffmpeg tool in the ffmpeg project
[17:50] <odinsbane> damn
[17:50] <JEEB> thus, if you use libav you use avconv
[17:50] <JEEB> if you use ffmpeg you use ffmpeg
[17:50] <JEEB> ffmpeg has merged most of avconv changes into ffmpeg
[18:00] <Diogo> hi this is possible use wget [URL] | ffmpeg -i pipe:0  -pass 1 | ffmpeg -i pass2 ....using pipe too?
[18:02] <sacarasc> No, because you only use a stats file from pass 1 in pass 2.
[18:04] <Diogo> where i can find more information about pipe:0 and realtime video encoding, and node.js..
[18:04] <Diogo> any documentation ?
[18:05] <Diogo> i find a good example in this site: http://pauldbergeron.com/blog/2011/12/28/streaming-youtube-to-mp3-audio-in-nodejs/
[18:05] <Diogo> Streaming Youtube to MP3 Audio in NodeJS (using ffmpeg pipe:0)
[18:48] <burek> Diogo, use a tmp file
[21:32] <jax> can i extract a png from an mts video?
[22:07] <hackeron> I have an H264 stream from an IP camera, I seem to be getting all kinds of problems with the image, the image breaks, the bottom of the image blurs, etc when I play it with vlc/ffplay - however playing it with quicktime looks perfect. Any suggestions? - this is my stream: rtsp://demo1.xanview.com/
[22:13] <cbreak> we use ip cameras via motion jpeg
[22:14] <Mavrik> hackeron: probably too small buffer
[22:14] <hackeron> Mavrik: hmm, how do you increase it?
[22:16] <hackeron> Mavrik: it's a little better with  ffplay -rtbufsize 2048 'rtsp://192.168.0.151' but not much
[22:17] <hackeron> Mavrik: same with -rtbufsize 8192 -- bottom of the image is corrupted
[22:18] <Mavrik> hmm
[22:19] <hackeron> you can try it yourself
[22:19] <hackeron> open the stream with ffplay and quicktime
[22:25] <trysten> how do i discard an input stream?
[22:28] <llogan> trysten: in what context?
[22:41] <jax> can you guys think of a quick way to synchronize 6 videos ?
[22:42] <jax> i took them with 6 handycams and would like to synchronize them as far as possible (i know frames may not be on the same millisecond)
[22:57] <trysten> llogan: i have a webm file. i want to 'rip' the audio to an ogg.
[22:58] <llogan> trysten: one way to do it is: ffmpeg -i input.webm -c:a copy -vn output.ogg
[00:00] --- Sat Aug  4 2012