[FFmpeg-user] Framerate automatically increased while cropping

[Adam Nielsen]

> why is the framerate automatically changed here from 29.98 fps to 120
> fps, and how can I prevent from this ?
> 
>    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 2508 kb/s, 29.98 fps, 120 tbr, 90k tbn, 2k tbc (default)

From what I can find, "tbr" is the target framerate the media is
indicating it wants.  So ffmpeg is just respecting that value.

I guess you could use the -r option to override this and force a
specific framerate if you want something different?  Or you could fix
the metadata in the source file to have the correct target framerate to
begin with.

Cheers,
Adam.