Great tip. I have added this gem to the manual at the end of the Background Rendering section as seen below. Except $ cat ~/tmp/brender* | ffmpeg -f image2pipe -i - -c:v copy brender.mov did not work for me.
Tip: If you have rendered your whole project with File format set to JPEG and there are no missing numbers in the sequence, you can create a video from that sequence outside of CINELERRA-GG. For example, if using the default output so that your files are named /tmp/brender000000, /tmp/brender000001, ... in a window, you would type: ffmpeg -f image2 -i /tmp/brender0%5d -c:v copy brender.mov which would create the video file brender.mov - be sure to delete existing brender files before creating a new sequence to ensure there are no missing numerical values in the sequence. On Wed, Jul 28, 2021 at 7:16 AM Andrew Randrianasulu via Cin < [email protected]> wrote: > > > On Wednesday, July 28, 2021, Andrew Randrianasulu <[email protected]> > wrote: > >> While working on EDL support I noticed old Adobe Premiere (4.0, 4.2) had >> interesting mode where you can output .mov from pre-rendered (with effects, >> transitions, etc) workarea. In CinelerraGG you can get similar effect by >> setting background render to jpeg, making sure your whole project got its >> preview (red bar) rendered, then quit cin and execute something like this: >> >> $ ffmpeg -f image2 -i ~/tmp/000%3d -c:v copy brender.mov >> > > actually, for non-0 started sequence I found this line works better (set > brender file to your_path/brender, it will be numbered automatically) > > > rm ~/tmp/brender* before each use > { do your stuff in cin } > $ cat ~/tmp/brender* | ffmpeg -f image2pipe -i - -c:v copy brender.mov > > at least with ffmpeg 4.4 it will refuse to update your existing > brender.mov file unlike image2 demuxer... so delete it if not needed or set > different output filename. > > from > https://superuser.com/questions/624567/how-to-create-a-video-from-images-using-ffmpeg > > > > >> >> it will copy your background render jpegs into mov without re-encoding >> them >> >> you might want to add '-r' too for specific framerate. >> >> I wonder if libavformat-based mov muxer can be re-introduced for such >> task .. (not feature request, just thinking). And may be 'delete brender >> files' button (there seems to be some space in preferences/performance GUI >> window..) >> > -- > Cin mailing list > [email protected] > https://lists.cinelerra-gg.org/mailman/listinfo/cin >
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