Hello all, I have a question about libx265 codec I use to re-encode video ; by the way I use the 6.1 release of ffmpeg, running on Windows 11 Family OS.
The output file ( re-encoded film ) created in MP4 format has a quite good audio/video quality ; but the process took quite a long time to execute : for a source film which length (or movie duration) is 1 h 32 min, the re-encoding process took 1 h 12 min. Here is the command line I used to create the output film : ffmpeg.exe -loglevel error -sn -i "D:\temp\input_film.mkv" -map 0:v:0 -map 0:a:0 -acodec libmp3lame -ar 48k -b:a 128k -q:a 3 -vcodec libx265 -vf scale=720:520 -sws_flags lanczos+accurate_rnd -b:v 1200k -minrate 1200k -maxrate 1200k -r 25 -qscale:v 2 -x265-params "nal-hrd=cbr:force-cfr=1:vbv-maxrate=1200:vbv-bufsize=1800 " -log_level -1 "C:\temp\output_film.mp4" -bufsize 1843200 In my command line, do anybody see parameter(s) which should be fixed, in order to reduce process duration, if possible with keeping the quality of the output file ? Or maybe there are excess parameter(s) in my command line, in order to reduce process duration ? If so, which parameter(s) ? Or maybe there are missing parameter(s) in my command line, in order to reduce process duration ? If so, which parameter(s), and how this (these) parameter(s) should be configured ? Thanks for your help. Regards, HA _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
