#ffmpeg on 2024-10-09 — irc logs at libera.irclog.whitequark.org

2024-04-11 19:01 BtbN changed the topic of #ffmpeg to: Welcome to the FFmpeg USER support channel | Development channel: #ffmpeg-devel | Bug reports: https://ffmpeg.org/bugreports.html | Wiki: https://trac.ffmpeg.org/ | This channel is publically logged | FFmpeg 7.0 is released

00:04 <znf> hm, how do I merge several VTT files into a single one?

00:04 <znf> the timestamps are continous in the files, not per-segment

00:12 <BtbN> Remove the header line from the following ones, and just cat them?

00:12 <BtbN> it's just plain text

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16:25 <tmatth> i'm trying to handle the case where an input stream (rtsp) may stall temporarily (so data is slow or not coming in), but I want to maintain the output to an rtmp endpoint at 30fps. My idea was to mix it with e.g. a color source or testsrc (which will have a constant fps), but it looks like i'm coming up against the same problem described here: https://ffmpeg.org/pipermail/ffmpeg-user/2017-January/034868.html

16:26 <tmatth> namely, if one input stalls, the whole thing gets stalled

16:26 <tmatth> is it possible to avoid this with ffmpeg?

16:26 <StephenLynx> hey, when I moved from av_image_alloc to av_frame_get_buffer, my gif stopped being animated. even the filesize is shorter. any ideas? https://pastebin.com/R7hDiMc4 the whole code. I prepare the frame at line 165.

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16:37 <MisterMinister> tmatth: whats your command line?

16:39 <tmatth> MisterMinister: something like `ffmpeg -f lavfi -i anullsrc -f lavfi -i testsrc2=rate=60 -i rtsp://blah.blah -filter_complex "[1]scale=iw/2:ih/2 [pip]; [2][pip] overlay=0:0" -c:v libx264 -c:a aac -shortest rtmp://....`

16:41 <MisterMinister> tmatth: got it, let me check... I think I had a working case for this

16:41 <tmatth> MisterMinister: oh awesome thanks

16:42 <tmatth> i'm missing the audio map option too but that's a separate (more straightforward) problem

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