2018-05-09 17:53 GMT+02:00, mohammed bey ahmed khernache: > Thank you for your reply. > The input video is encoded with hevc at 25 fps. > I tries this command: > ffmpeg -threads 1 -vsync drop -i <input_video> -f null /dev/null > I got this message in yellow: > Encoder did not produce proper pts, making some up > > Unfortunately, I can not reach 25 fps while decoding, even > with dropping frames. > So I think that the option for "frame dropping" is not working !!
The option vsync allows to duplicate / drop decoded frames to maintain A/V sync, it is not related to the decoding speed. Use "-skip_loop_filter all" to get some speed-up without noticeable visual effect, use "-skip_frame noref" in addition to get significant speed-up for some videos, feel free to also try "-skip_frame bidir" (can cause artefacts iirc) and "-skip_frame nokey" (which skips nearly all frames). Please remember not to top-post here, Carl Eugen PS: vsync is neither an input nor an output option, it is a global option. _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
