[01:14] <bove> Can I set swscale flags from the command line? [01:15] <Jack64> I finally made it work :D [01:35] <NID> Is it possible to record an application using pulse for audio? [01:35] <NID> I'm trying to figure out how to do this [01:37] <klaxa> ffmpeg -f alsa -i pulse -c:a flac out.flac [01:38] <klaxa> that will record audio from your default recording device [01:38] <klaxa> you can set your default recording device to a monitor device [01:38] <NID> Right, but is it possible to record a stream, for example from an application? [01:39] <klaxa> theoretically yes, probably not without delay to your soundcard [01:39] <klaxa> someone had a similar usecase: http://klaxa.eu/record%20game%20audio.svg [01:40] <klaxa> if you don't need to listen to the audio while it is being recorded you can skip the loopback module [01:40] <NID> Yeah I don't need to listen to it [01:40] <klaxa> then you can create a nullmodule, redirect the application's audio to the null-sink and record from the monitor of the null-sink [01:41] <NID> How would I go about doing that? [01:42] <klaxa> with "pacmd load-module module-null-sink" you can load a null-module [01:42] <NID> Ah nevermind, I figured it out [01:42] <NID> Thanks :) [01:42] <klaxa> with pavucontrol you can set the streams in the gui [01:42] <klaxa> :) [01:43] <Jack64> klaxa: made it work :D [01:44] <Jack64> klaxa: check out the working script http://pastebin.com/F9dkuMQ7 it has some comments on the top to help explain [01:45] <klaxa> oh i see what you are doing now... i think generating a video that updates in sync with the original that only contains the scoreboard might be easier [01:46] <klaxa> this seems a bit roundabout on it... [01:46] <Jack64> wow never thought of that -.- [01:46] <klaxa> depending on how complex the scoreboard is, you could probably even do it better with styled subtitles [01:46] <Jack64> well some times it's 29-0 [01:46] <Jack64> haha [01:47] <klaxa> do you have a screenshot of the scoreboard? [01:47] <Jack64> generated on demand with PHP [01:47] <Jack64> so no.. [01:47] <klaxa> can you generate one and show it to me? [01:47] <Jack64> ok just a sec [01:47] <klaxa> using aegisub might actually be a lot easier than this... [01:47] <klaxa> and way less prone to errors [01:48] <Jack64> where can I paste the photo? [01:48] <Jack64> imageshack requires login -.- [01:48] <klaxa> dunno, imgur? [01:48] <klaxa> http://imgur.com/ [01:49] <Jack64> http://imgur.com/JKp9IUR [01:49] <Jack64> the colors are still not right [01:49] <Jack64> but that's not my part to do xD [01:50] <Jack64> the team names are on a local sql db [01:50] <Jack64> and my friend made an HTML interface [01:50] <Jack64> pretty cool [01:51] <klaxa> ah well... using styled subtitles would be possible, gradients *might* be an issue, but given you probably already put a lot of time and effort into this, changing it now would be bad [01:51] <Jack64> ah, and the white parts on the edges are not part of the image [01:51] <Jack64> well yea it's all kind of hacked together [01:51] <Jack64> just for internal use [01:52] <klaxa> well if it works now, that's great, if it doesn't, i would think about generating one video to overlay over everything [01:52] <klaxa> would highly simplify the script too [01:52] <Jack64> he was sick of wasting hours in power director doing the same thing every week [01:52] <klaxa> things that can be automated, should be automated [01:52] <Jack64> yea it would, but doing it like this was also an exercise for me it was fun [01:52] <klaxa> so you can spend more time on being productive [01:52] <Jack64> you're right on that [01:53] <Jack64> I had to write C code to patch into ffprobe and get the keyframe for the splits eheh [01:54] <Jack64> and then I do it all in RAM because splits are instantaneous [01:54] <Jack64> so maybe there's not a big performance penalty for doing it like this instead of a movie [01:54] <klaxa> you could have used libavformat, or just used mkv as a intermediate container with mkvtoolnix [01:55] <Jack64> but that's definitely the better solution. Generate a movie from the png images [01:55] <klaxa> uh... i mean with mkvtoolnix's mkvinfo to get keyframes [01:55] <klaxa> that's what i do for splitting videos at least [01:55] <Jack64> yea [01:57] <Jack64> actually another crappy performance hit if you see on the script is because of the way I'm adding the splash screen at the end I have to reprocess the whole video for adding just a 3 second overlay.. [01:57] <Jack64> .. at the beginning [01:57] <klaxa> mkv and mkvsplit with concatenation :x [01:57] <Jack64> yea that'd probably have been better [01:58] <Jack64> hey it's the first time I tried to do this :P [01:58] <klaxa> you can also use the concat demuxer to concatenate videos [01:58] <klaxa> http://trac.ffmpeg.org/wiki/How%20to%20concatenate%20%28join,%20merge%29%20m... [01:58] <Jack64> yea that's what I use [01:58] <Jack64> that's at the end of the script [01:59] <klaxa> that's not a lot of overhead then [06:18] <Jack64> klaxa: I'm going nuts over here it fixed it in some scripts, others it didn't -.- I think I'm gonna have to rewrite it the way you said making a movie of all the overlays [07:39] <Snowleaksange> WWWWWWWWAAAAAAAAAAAAAAHHHHHHHHHHHHHHHH my ffmpeg prog is leaking mem =( [07:40] <Snowleaksange> av_free_packet() av_frame_free() [07:40] <Snowleaksange> what more do you want from me avcodec_decode_video2 ? [07:43] <Snowleaksange> seriously ffmpeg youre my only hope [08:33] <Snowleaksange> avcode_decode_video2 decode_frame ff_thread-get_buffer ff_get_buffer video_get_buffer av_buffer_poo_get av_buffer_allocz av_malloc [08:34] <Snowleaksange> got like 70 meg alloced there that keep growing at map changes :/ [09:34] <Snowleaksange> hmm think my problem is not calling avcodec_clsoe.. only problem is .. it crashes [10:17] <jarainf> jarainf lol [10:46] <batence> "movie=logo.png, scale=200:37 [watermark]; [in][watermark] overlay=10:10 [out]" - how to change these pixels 200:37 in percentage, because when i convert video with big resolution ... watermark comes small, but when convert video with small resolution - watermark comes very big, so is there a solution to scale watermark in percentage of video resolution ? [10:59] <charred> Hello, I'm attempting to compile openlase (following the guide here) https://github.com/marcan/openlase/wiki/Installation ... and I'm getting an error libavresample/avresample.h file not found. Some googling said the ffmpeg configure I had to add an --enable-avresample flag, but I have no idea how to do this [10:59] <Snowleaksange> thought my ffmpeg upgrade went smooth till i realized only 90% mark. now another day trying to fix mem leak [10:59] <charred> Anyone have an idea? [11:24] <Snowleaksange> hmm [11:26] <Snowleaksange> i think my memory leak is from not calling avcodec_close... but avcodec_close crashes.. i call avformat_open_input with a filename, then open the codecs. to close im trying to iterate the nb_streams and call avcodec_close() if stream->codec->codec. but this crashes for png codec on freeing avctx->internal->to_free->metadata [11:40] <Snowleaksange> hmm.. not calling av_frame_free() makes avcodec_close() not crash... and uses a lot less mem [11:58] <Mavrik> Snowleaksange, why don't you just use valgrind to see what's leaking exactly? [12:02] <JEEB> charred, when you compile ffmpeg you will have to manually enable avresample in its configuration script, which is --enable-avresample [12:22] <Snowleaksange> i did Mavrik. avcodec_decode_*. Now trying to fix it. [12:25] <Snowleaksange> well its really not even a leak anymore, as how to not crash avcodec_close [12:25] <Snowleaksange> in the case of loading png files, if i dont call av_frame_free then avcodec_close doesnt crash [12:26] <Snowleaksange> the leak was because i wasnt calling avcodec_close [12:34] <Mavrik> Snowleaksange, mhm, compiling ffmpeg with debug symbols and using gdb helps [12:54] <luc4> Hello! I'm using ffmpeg to dump metadata from a video file. I used: ffmpeg -i INPUT -f ffmetadata FFMETADATAFILE. What I get is no data in the output file. But ffprobe returns creation_time : 2012-10-18 16:26:59 in metadata. Maybe -f ffmetadata is not sufficient? [19:08] <hannes2> hey, asking for a windows-bound friend: what is the easiest way to make her able to run "ffmpeg -i image%04d.png -vcodec libx264 -crf 18 -preset veryslow -pix_fmt yuv420p out.mkv" on windows 7? [19:08] <hannes2> last time i tried to install x264 on someone's windows machine it ended up with a mess [19:09] <sacarasc> http://ffmpeg.zeranoe.com/builds/ [19:09] <hannes2> thanks! [19:09] <sacarasc> Windows builds with libx264 all in. [19:09] <sacarasc> Grab the static one, it's the simplest. [19:09] <hannes2> nice, that looks fantastic [19:11] <hannes2> you made my/our day, thanks! [19:12] <sacarasc> :) [21:20] <viddy> Hello. I have a file which has a change in the audio stream layout like 10~ minutes in. It seems ffmpeg mostly cares about the stream-layout when it starts, so when a new audio stream is introduced suddenly it ends up being dropped (not ending up in the encoded file). Can anyone point me in the direction of a solution to this? Can it be done? Thanks. [21:56] <fp> Trying to decode frames in sync between two files, i.e. get frame 0 from file 1 and then frame 0 from file 2 to do some calculations on the YCbCr-data. Then frame 1 and so on... [21:56] <fp> Using decoder-loop from ffmpeg/doc/examples/demuxing_decoding.c as my example. See http://pastebin.com/kPmczqbB Completely lost, any help would be greatly appreciated! [22:03] <Mavrik> ok? [22:19] <IamTrying> ffmpeg -i ITR.wav -ss 00:00:12 -t 00:00:17 sara1.wav Why its not cutting the WAV file between 12 and 17 seconds but making it 17 seconds in length [22:19] <Mavrik> IamTrying, because that's what you're telling it to do. [22:19] <Mavrik> -t is length, not end position [22:20] <IamTrying> Mavrik, i have a 1 hour WAV file for IVR message. how can i cut the audio starts at 00:00:12 and ends in 00:00:17 ? [22:22] <Mavrik> again. [22:22] <Mavrik> -t is length of a clip. [22:22] <Mavrik> you do know basic maths right? [22:22] <Mavrik> set -t to length you want. [22:23] <IamTrying> Mavrik, -t 00:00:07 works but its not accurate the audio has Milliseconds too, how can i do in the -t Millisecond adjust? [22:23] <klaxa> use 00:00:06.123 instead [22:23] <IamTrying> OK [22:23] <klaxa> i think that's even documented in the manpage [22:24] <Mavrik> mhm. [22:24] <Mavrik> :) [22:24] <IamTrying> Thank you Mavrik , klaxa [22:24] <klaxa> you can also use -to to specify a position rather than a duration [22:32] <IamTrying> How can i merg "goodbye" in the sara5.wav? "Unfortunately nobody is available to join, please call back later or send us an email" = $ ffmpeg -i ITR.wav -ss 00:00:42 -t 00:00:7.500 sara5.wav but i need to add "GoodBye" in sara5.wav from -ss 00:01:55. [22:35] <klaxa> http://trac.ffmpeg.org/wiki/How%20to%20concatenate%20%28join,%20merge%29%20m... [22:36] <IamTrying> Thank you klaxa works [00:00] --- Mon Mar 10 2014