> I may misunderstand but FFmpeg treats all video as frame-based. Sorry, I posed the question wrong. I meant that I would like to use a frame-count-based scale instead of a time-based scale, in the way that a genuine frame server like AVIsynth does.
>> * Could I (easily) extract every nth frame from a video (in order to >> dump the result as JPEGs)? > See the select or the fps filter or use a low output frame rate (which > forces frame drops). I fear that this would provoke rounding errors, especially with NTSC's 29,97 fps. To the contrast, AVIsynth's "SelectEvery(5)" is bullet-proof: It takes every 5th frame (in presentation order), no matter what. ... I take from your answer that this approach is just impossible with FFmpeg at the moment. Wolfgang Hugemann _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
