вт, 2 дек. 2025 г., 10:00 Luca Marchiori via ffmpeg-user < [email protected]>:
> Hi. > Thanks for your kindly reply! > Reencoding was my clue but I'm not skilled on video matters. > When I need to speedup a video (32x or more), the resulting vid is a temp > one so I would don't care about its size, encoding and other things. It > will be immediately trashed after viewed. > Really thing I need is to have a faster video speedup process. > Is there a lighter (processing time speaking) output format/codec? Again: > I dont'care about size, a 1hr vid could be a 50GB one too 😊 > I don't know if this example could be ok but I try: JPG(encoded)->BMP(raw, > not encoded) as MP4->... > Thanks for your help!!! > L > There is example in "man ffmpeg-filters": ffmpeg -skip_frame nokey -i file -vsync 0 rest_of_the_params .... it should skip all non-keyframes and produce much shorter video, but its speed up will be determinated by all frames/num_of_keyframes ratio, can be 50, can be 250 :( If vlc can provide fast preview - may be use it for transcoding, too? > > -----Messaggio originale----- > Da: alexandre schenberg via ffmpeg-user <[email protected]> > Inviato: lunedì 1 dicembre 2025 19:18 > A: Luca Marchiori via ffmpeg-user <[email protected]> > Cc: Luca Marchiori <[email protected]>; alexandre schenberg < > [email protected]> > Oggetto: [FFmpeg-user] Re: howto speedup (speedup!) ffmpeg? > > Hi. I would guess you are ordering ffmpeg to reencode your video, which > naturally takes some time. > _______________________________________________ > ffmpeg-user mailing list -- [email protected] To unsubscribe send an > email to [email protected] > > _______________________________________________ > ffmpeg-user mailing list -- [email protected] > To unsubscribe send an email to [email protected] > _______________________________________________ ffmpeg-user mailing list -- [email protected] To unsubscribe send an email to [email protected]
