[Cin] Segmented Recording from input stream

[Andrew Randrianasulu]

чт, 29 мая 2025 г., 23:42 Terje J. Hanssen via Cin <
cin at lists.cinelerra-gg.org>:

> Is it possible with CinGG's Record utility (via FFMPEG) to record a stream
> to file segments of same duration or file size and use auto-naming?
>
> Typical example:
> Record a video/audio input stream (i.e from playing a camcorder tape
> cassette) and encode to output file segments of 10 minutes or 10 GB each
> and auto-name file numbers.
>
> Similar example code using an input file instead at
>
> https://unix.stackexchange.com/questions/1670/how-can-i-use-ffmpeg-to-split-mpeg-video-into-10-minute-chunks
>
> Just use what is built into ffmpeg to do exactly this.
>
> ffmpeg -i invid.mp4 -threads 3 \
>        -vcodec copy *-f segment -segment_time 10:00 \
>        -reset_timestamps 1 \
>        cam_out_h264_%02d.mp4*
>
> This will split it into roughly 10-minute chunks, split at the relevant
> keyframes, and will output to the files *cam_out_h264_01.mp4,
> cam_out_h264_02.mp4*, etc.
>
Very interesting question! Never tried this, did not even know it existed!

As long as this -f just ordinary avformat muxer you probably can copy your
favourite ffmpeg video/audio profiles with new .seg name and put
"segmented" at very first line there , where "mov" or "matroska" or other
format name was, and add rest of options. And add pattern (%02d) into name
just as with ffmpeg-based image lists.

I'll try this with termux's version, but I do not have audio here so it
will be incomplete.





> Terje J. H
>
>
>
>
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