[Ffmpeg-devel-irc] ffmpeg.log.20120308

[burek]

[00:00] <chuck___> i guess i can work things out with some kind of -sameq parameter
[00:01] <chuck___> yup, seems to work better with -sameq
[04:11] <steven_> what is the state of Mac Lion support for ffmpeg?
[04:12] <steven_> guides/documentation, that is
[04:13] <codepal> any chance I can convert audible files?
[04:16] <codepal> .aa ?
[04:18] <sj_underwater> i dont think any1s answering
[04:19] <sj_underwater> plus audible files are DRMed
[06:55] <pasteeater> Zeranoe: ever consider providing FFmbc builds too?
[07:01] <Zeranoe> pasteeater: I did, I gave them a full set of builds for their release. I don't believe they ever posted them.
[07:07] <relaxed> why not host them yourself?
[07:08] <Zeranoe> relaxed: I offered that as well, but the main dev told me he would host them. I also would need to create a new project page on my site if I planed to host them there, which I don't have time for right now.
[07:17] <pasteeater> Zeranoe: i wonder why they weren't. there was a call for win binaries on its ML recently.
[07:18] <pasteeater> dev is bcoudurier
[07:22] <Zeranoe> http://groups.google.com/group/ffmbc-discuss/browse_thread/thread/cb85040c830bc884 It looks like the need might have been filled
[07:22] <pasteeater> yours are better
[07:27] <relaxed> too many forks
[07:28] Action: relaxed shakes his fist in the air
[09:58] <giany> hi, is there a way to add a codec without having to recompile ffmpeg?
[11:28] <fuzzybunny69y> hey guys does anyone know of a ffmpeg preset that will work with uploading videos to Facebook?
[11:29] <fuzzybunny69y> and also is it possible to merge together video clips that are in different formats?
[13:22] <rainmaker1> Hi, is there any difference when ffmpeg receives mpegts from vlan interface? I have a strange problem where ffmpeg does not print any usefull info (not info at all) but I can see a stream with tcpdump
[13:32] <dafox> sacarasc, Mavrik, spaam, JEEB: I did thank you for your input yesterday, so I'd like to still do so now :) I managed to get a decent speed up using the mpeg4 codec, which apparently better supports threads. Its still not going full-out, but at >300% cpu usage its already a significant improvement
[13:32] <dafox> *didn't
[13:33] <sacarasc> \o/
[13:36] <dafox> and I think that now decoding might be becoming a bottle-neck
[13:36] <dafox> so I guess 'problem solved' :)
[13:51] <spaam> dafox: good :D
[17:47] <arbin> is ffplay usually buggy when using the -ss flag?
[17:54] <spaam> what happens when you are using that? : )
[18:06] <arbin> randomly crashes upon loading the file
[19:06] <spaam> arbin: is it same type of file or all type of files?
[19:08] <boo> hi burek! FFmpeg still failing with the git version.. though couldn't install the x264 from git - got some error, but I know my system has one.. Any recomendations what to do?
[19:10] <burek> hm
[19:10] <burek> apt-get uninstall libx264
[19:10] <burek> and compile from git :)
[19:11] <burek> http://www.videolan.org/developers/x264.html
[19:12] <burek> so, just git clone git://git.videolan.org/x264.git
[19:12] <burek> ./configure;make;sudo make install
[19:13] <sacarasc> Should use &&, not ; there. If there is an error, you don't want the next step to happen.
[19:13] <burek> yes, also should use cd x264 ^^
[19:13] <boo> burek, don't have sude, use gentoo. Btw I'm still concerned if it's really an ffmpeg fault, because, if I cat the stream and paralel run the ffmpeg to the cat file, then it doesn't fail..
[19:13] <burek> http://pastebin.com/LhRkXhzZ
[19:14] <burek> it might be that mpegts decoder is broken
[19:14] <burek> or udp
[19:14] <burek> anyway, we have to see what's wrong in order to fix it :)
[19:18] <boo> burek, sure so I should unmerge x264 and then try again x264 git version?
[19:19] <burek> well, I would do that
[19:19] <burek> with multimedia projects it is always the best to keep up to date with latest versions of code
[19:19] <sacarasc> Isn't there a git ffmpeg thing you can emerge? I would be surprised if there wasn;t...
[19:20] <boo> Sacarasc, don't know, I previously tried emerge ffmpeg-9999 which is masked, but it still had the error.
[19:30] <arbin> spaam: neither, same exact file, sometimes it crashes, other times it doesn't
[19:40] <spaam> try ffplay -threads 1 file.ext
[19:50] <pasteeater> spaam: haven't seen you here much lately
[19:52] <spaam> pasteeater: i know. i have had this channel on window 78 in irssi..  and i only have keyboard shortcuts to 35.. before i had it on 28.
[19:52] <spaam> before i started irssi yesterday :D
[19:52] <spaam> so now its back on place 28.
[19:53] <pasteeater> tell me those aren't the number of irc channels you are in...
[19:54] <spaam> its less.
[19:55] <spaam> i think its like 22 channels
[20:04] <sacarasc> Not enough channels!
[20:05] <pasteeater> there are more than 2 channels?
[20:10] <sacarasc> pasteeater: Of course, don't you have a 7.1 system? :o
[20:15] <pasteeater> actually, no. just some alessandro-grados.
[20:36] <arbin> spaam, that did the trick
[20:37] <arbin> or maybe not
[20:37] <arbin> still crashes randomly, just a lot less frequently
[20:44] <arbin> it's very infrequent now
[20:49] <spaam> arbin: time to get an backtrace then.
[20:50] <spaam> arbin: install gdb  . gdb --args ffplay_g file  .. then type run
[20:51] <spaam> when if it crashes. type bt
[20:55] <arbin> i'm not running linux
[21:11] <spaam> arbin: you are using windows?
[21:26] <XAVeRY> how is it possible to create a movie file that would contain one image, but with the length of the video track equal to the audio track?
[21:27] <mark_u> you mean like those youtube videos that i always click away from because they're not really a video?
[21:27] <pasteeater> XAVeRY: ffmpeg -loop 1 -i image -i audio -shortest output
[21:27] <pasteeater> the most basic example
[21:27] <XAVeRY> pasteeater: ah, -loop 1. I had -loop_input.
[21:27] <XAVeRY> mark_u: yep, exactly.
[21:27] <pasteeater> that's the old syntax
[21:29] <pasteeater> if you're going to youtube then try: ffmpeg -loop 1 -r 5 -i image -i audio -c:v libx264 -preset slow -crf 18 -tune stillimage -c:a copy output.mkv
[21:29] <XAVeRY> pasteeater: you're just too nice. thanks a ton!
[21:30] <pasteeater> adjust preset as to your level of patience
[21:31] <pasteeater> veryslow probably won't be too bad with a static input, although veryslow is relatively very slow.
[21:39] <pasteeater> maybe even -r 1 would work.
[21:50] <XAVeRY> why doesn't -vf seem to work with the image input now? I was hoping to apply a scale and pad filter.
[21:55] <XAVeRY> nevermind, I put the option in the wrong place.
[21:56] <XAVeRY> ahhh, purr-fect.
[21:56] <XAVeRY> pasteeater: thank you again, you were a great help.
[22:12] <XAVeRY> pasteeater: doing -r 1 creates files that are too long, e.g. the video still runs after the audio finishes.
[22:12] <XAVeRY> it occurs with -r 5 as well, but not as much.
[22:20] <cbsrobot> XAVeRY: add -shortest to your argumants
[22:34] <XAVeRY> cbsrobot: it's there. :)
[22:59] <captainramen> i'm having a tough time combining different filters... basically i need to add letter boxing and throw a watermark on top
[23:00] <captainramen> ffmpeg -i input.flv -b 700k -vf "movie=watermark.png [watermark]; [in][watermark] overlay=0:0 [out]" output.flv
[23:00] <captainramen> i am unsure where to put pad=640:385:0:72:black
[23:01] <sacarasc> DO you want to pad first or last?
[23:01] <captainramen> first
[23:01] <captainramen> since the watermark is 640x385 but the video is 640:240
[23:02] <sacarasc> -vf pad=blah,"movie=blah"
[23:02] <sacarasc> I think.
[23:02] <Mavrik> yep
[23:03] <captainramen> if i do that then I get 'too many inputs specified for the "movie" filter
[23:06] <relaxed> '[in]pad=640:385:0:72:black[video];movie=watermark.png [watermark];[video][watermark]overlay=0:0 [out]'
[23:08] <relaxed> black is the default, fyi
[23:08] <captainramen> and i take it only even numbers are allowed?
[23:09] <relaxed> hmm, it may depend on the codec.
[23:13] <captainramen> that did it! thanks so much!
[23:33] <apersaud> Hello, I'm trying to filter out some background noise from a movie. The movie looks at emission from small emitters (think of a bunch of LEDs) in a dark room, but the room wasn't completely dark, so that some light made it to the camera. If I plot the gray value of each pixel for each frame, I get something like a quadratic equation in 3d. Is there a filter that can remove this sort of noise?
[23:37] <pasteeater> apersaud: hqdn3d is a denoise filter in ffmpeg. have you investigated it? I'm not sure if it will do what you want though.
[23:39] <apersaud> pasteeater: I'm alraedy using that one... it does get rid of a lot of white noise, but since the light cones are real it also leaves those in (as it probably should)...
[23:44] <pasteeater> can you provide a sample of the input se we can visualize your issue?
[23:50] <apersaud> pasteeater: sure, just give me a few mins
[00:00] --- Fri Mar  9 2012