[FFmpeg-devel] [PATCH] dvd vob input fps detect wrong

[Limin Wang]

Hi,

When I use ffmpeg to converted some ntsc dvd(interlaced), it'll detect its
frame rate(by other tools, I'm sure it's 29.97fps) to 59.54 which will cause
many duplicate frame and very bad quality. ffmpeg will report below message
always: 

Seems stream 0 codec frame rate differs from container frame rate: 29.97
(30000/1001) -> 59.94 (60000/1001)

After using below patch, it'll fix the issue, but I don't know
why it'll process mpeg2video as special case? Please give your comments.


Thanks,
Limin