[mythtv-users] No more choppy video -- problem (mostly) solved!

[Ray Olszewski]

I remember having this problem too, once, I think with vcr/avifile, or 
maybe mencoder. It turned out to have resulted from a typo ... I entered 
the frame rate as 29.93 instead of 29.97, and the app converted this to 29. 
I infer that typical coding (or perhaps the bttv driver itself) treats the 
frame rate as an integer, except for the special case that exactly matches 
the NTSC frame rate.

At 05:43 PM 5/11/2003 -0400, Jason Tackaberry wrote:
[...]
>After doing a frame-by-frame examination of the video stream, I
>discovered a slight jump in the scrolling text after every 30 frames.
>And indeed, that's because mplayer, for whatever reason, was capturing
>at 29 fps, and not 29.97 fps.  I assume that's the frame rate the bttv
>driver told it to use, but I have no idea why.  By forcing mencoder to
>capture at 29.97, that problem was solved.  I need to find out of MythTV
>is also capturing at 29fps, but I'll look into that after.