[Ffmpeg-devel-irc] ffmpeg.log.20200101

[burek]

[03:10:32 CET] <Media_Thor> Happy New Year FFmpeg-ers!
[05:43:46 CET] <while> is there a way to break an audio stream into its composing sine waves, like say, into multiple streams each stream containing only 1 sine wave
[06:30:16 CET] <DHE> while: you mean a fourier analysis? or just turning a single stream of multiple channels into many mono streams
[06:45:08 CET] <while> yes fourier analysis, and synthesis
[12:37:39 CET] <soub> Hi
[12:37:57 CET] <soub> Ffmpeg is planning for gsoc 2020
[19:05:35 CET] <AABatteries> hey folks, I'm struggling with chaining filters - a have a pretty simple script that creates a padding and then overlays a watermark over it. It works fine, but now I decided to make sure that the watermark is scaled to 10% of the original video height (instead of hardcoding the value) and it stopped working. The padding is added, but the overlay is missing. Can anyone help me find where I messed up? I'm pretty new to ffmpeg
[19:05:47 CET] <AABatteries> here's the code snippet: https://pastebin.com/cGwL35XM
[19:06:19 CET] <AABatteries> I think I'm struggling with commas/semicolons
[20:18:02 CET] <cousin_luigi> Greetings.
[20:18:43 CET] <while> hi
[20:18:51 CET] Action: cousin_luigi has a number of MPEG-TS avc/aac to concatenate, but he's failing at it
[20:19:09 CET] <cousin_luigi> So far only the audio appears to be copied.
[20:19:21 CET] <while> whats your command line look like?
[20:19:38 CET] <cousin_luigi>  ffmpeg -f concat -i filelist1.txt -c:v copy -c:a copy output.wav
[20:19:45 CET] <cousin_luigi> crap
[20:20:34 CET] <while> well, with how ffmpeg works, it makes assumptions based on the output file name, in this case its likely going to treat the output as an MS wav file
[20:20:52 CET] <cousin_luigi> while: It's working now.
[20:21:02 CET] <while> if you changed the output file name to output.wav.mp4 or output.wav.mkv, that may solve that
[20:21:07 CET] <cousin_luigi> while: How can I set the language for the audio track?
[20:21:18 CET] <while> like subtitles?
[20:21:50 CET] <while> I mean, set the language in what capacity
[20:22:05 CET] <cousin_luigi> while: For the audio track itself.
[20:22:22 CET] <cousin_luigi> Even if there's just one, I like having the language shown in the player.
[20:22:54 CET] <while> so in the audio stream headers
[20:23:38 CET] <cousin_luigi> -metadata:s:a:0 language=foo is apparently what I need
[20:24:06 CET] <while> yes, and I think that takes and ISO 639-2 code of the language, there is probably a table online
[20:34:20 CET] <cousin_luigi> Thanks, my problem is apparently solved!
[20:59:29 CET] <cousin_luigi> bbl
[00:00:00 CET] --- Thu Jan  2 2020