[07:46:52 CET] <AiNA_TE> how do i set "Average quantizer" value in ffmpeg? [07:47:59 CET] <AiNA_TE> and is it known by some other name?, i don't see it in the documentation [09:37:41 CET] <celebrate> hey everyone [09:37:55 CET] <celebrate> How can i make the scaling option respect aspect ratio of the video? [09:37:56 CET] <celebrate> .outputOptions(['-s 480:600','-c:a copy', '-c:v libx264', '-preset:v medium']) [09:38:06 CET] <celebrate> i tried 480:-1 for example but that didn't work [09:38:08 CET] <celebrate> here's full my cmd [09:38:13 CET] <celebrate> ffmpeg() .input(tempFilePath) .input(watermarkFilePath) .outputOptions(['-s 480:600','-c:a copy', '-c:v libx264', '-preset:v medium']) .complexFilter([ "[0:v][1:v]overlay=W-w-20:H-h-20" ]) .format('mp4') .output(targetTempFilePath) [09:39:16 CET] <celebrate> It gave me an error when i tried: Invalid frame size: 480:-1. [09:39:28 CET] <celebrate> The top example works but doesnt respect aspect ratio [12:23:11 CET] <sopparus> hello [12:24:31 CET] <sopparus> a few years ago I used some ffmpeg or possibly mkvtools to find mkvs that kodi couldnt jump to positions in, to fix it I just remade the mkv. Anyone knows how you can figure this out with cli? [13:55:21 CET] <LFSVeteran> ffmpeg -f alsa -acodec pcm_s32le -ac 2 -ar 192k -i hw:1,0 -strict -2 -c:a vorbis -content_type audio/ogg -f ogg icecast://user:pass@127.0.0.1:8000/stream [13:55:29 CET] <LFSVeteran> how can I add buffering to this? [13:55:42 CET] <LFSVeteran> the stream is working, but faltering [14:58:49 CET] <relaxed> LFSVeteran: you probably want '-c:a libvorbis', ffmpeg has a native encoder called 'vorbis' and it sucks. [15:15:15 CET] <scramblez> Hi All, I have an mp4 with a mono aac audio stream in it. How could I map it to individual channels at a time? e.g. how could I map it to come out only on FR, or only on LFE? [15:16:36 CET] <scramblez> while the other channels stay silent/empty? [15:17:24 CET] <scramblez> Also, convert it to ac3 at the same time? [15:19:29 CET] <scramblez> Ahh ... 'channelmap' may be what I need ... [15:22:33 CET] <relaxed> scramblez: look at the channelmap filter [15:22:39 CET] <relaxed> oh, nm :) [15:23:11 CET] <scramblez> relaxed: thanks, I'm reading up on it now. :-) [15:24:25 CET] <scramblez> Hmm ... struggling with this. [15:24:51 CET] <scramblez> I have a single mono aac audio. How do I direct it with channelmap? [15:25:05 CET] <scramblez> Say to only play out of FR? [15:25:31 CET] <scramblez> What should the channelmap input be for a mono? [15:26:11 CET] <scramblez> Maybe I need to map the audio stream 0:1? [15:26:37 CET] Action: scramblez back in a while ... [15:35:14 CET] <vlt> Hello. Is there a filter for shearing video? Im looking for a quick way to move just the lower left corner of a video up by a few pixels. Any idea? [15:38:35 CET] <Hello71> don't think so. if you're just editing one video it's probably easier to just load some graphical video editor [15:40:31 CET] <vlt> I found "perspective" which almost does what I need. [15:41:23 CET] <vlt> Any idea how to fill missing parts with black background instead of repeating the pixels of the last line? [15:51:20 CET] <LFSVeteran> relaxed: ah that explains why libvorbis isn't working...it says unknown encoder [15:51:47 CET] <LFSVeteran> checking configure how to enable the system one... [15:53:55 CET] <durandal_1707> vlt: you can add fillborders filter [16:00:45 CET] <LFSVeteran> rebuilding ffmpeg with correct vorbis support [16:24:42 CET] <vlt> durandal_1707: Trying that, thanks. [16:43:10 CET] <sopparus> anyone know how to detect missing or bad index in a mkv file using ffmpeg or mkvtools? [18:35:33 CET] <LFSVeteran> hmm libvorbis won't allow 192kHz sample rate [18:35:48 CET] <LFSVeteran> while I can do with vorbis [18:36:18 CET] <BtbN> Why would you even need that high of a samplerate? [18:36:26 CET] <BtbN> Doesn't that mess with players which most likely don't support it? [18:37:15 CET] <LFSVeteran> forgot to mention it isn't just audio what I want to stream... [18:37:59 CET] <BtbN> That makes that sample rate even more questionable [18:38:12 CET] <LFSVeteran> so for normal audio, correct, 44kHz would be sufficient [18:38:35 CET] <LFSVeteran> the max freq is about 60kHz [18:38:59 CET] <LFSVeteran> which is possible with alsa and the soundcard [18:39:28 CET] <BtbN> But not with the vast majority of speakers, headphones and ears. [18:40:18 CET] <LFSVeteran> no indeed, you'll need some filtering there....that's what happens, audio gets separated from the rest [18:41:12 CET] <LFSVeteran> maybe just plain pcm_s32le? [18:49:59 CET] <furq> applying audio compression to non-audio data is generally a bad idea [18:51:00 CET] <furq> lossy compression is much more likely to lose stuff you care about and lossless compression probably won't compress it very well [18:52:56 CET] <LFSVeteran> options for non compressed codecs/formats? [00:00:00 CET] --- Sun Dec 29 2019