[MEncoder-users] 2 green frames at begin when using vf yadif

Bernhard Schelling Barna at Nukular.ch
Fri Feb 2 15:54:05 CET 2007


Hi all,

When I use the yadif filter with an avi output I always get the first 2 frames filled with green (RGB 0,135,0).
I tested this with different mencoder versions on different platforms with many different input files.

It seems to me, as it is a 'behavior by design' as yadif probably (I'm just guessing here) needs at least 3 frames to work with. So the first two don't meet
this requirement and the result are these green frames.
It's hard to see when looking at it in mplayer (you can see it very good when you press the left key down) but it's not that nice either. You can see it of
course in a video editing tool or in some video preview utilities which grab the first frame for instance.

So I'm looking for someone who can fix this or include a workaround, or provide me with a way to have these frames either removed, or not filtered by yadif. I'd
like to do this without having to encode the whole file twice or storing full raw frames on a storage device.

Thank you,
Bernhard




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