On Mon, Oct 01, 2018 at 21:26:02 -0400, sean darcy wrote: > > That does not sound correct, "-re" allows FFmpeg to encode in > > real-time (instead of faster), it should not change the output frame > > rate. Does it? > > From 12 years ago: > > https://lists.libav.org/pipermail/ffmpeg-user/2006-February/002349.html > > make an decoding/encoding with > framerate " -re" (instead of "-r pal" or -r ntsc" or "-r 25" or "-r > 30000:1001", ...) the "-re" parameter for framerate will just > decode/encode your input without forcing framerate (read your input at > its own framerate and write it "the same") > You'll will see (even if your input was a ntsc-film with pulldown) > that your output will be 24000:1001 too.
Ah, well, that was already incorrect 12 years ago. "-re" does not change how ffmpeg maps the inputs frame (or field) rate to its output's frame rate. It changes how fast the input is processed: https://ffmpeg.org/ffmpeg.html#Advanced-options "This option will slow down the reading of the input(s) to the native frame rate of the input(s). It is useful for real-time output (e.g. live streaming)." Cheers, Moritz _______________________________________________ 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".
