Dear Steven,
Regarding:
> One thing to watch out for with mplayer...
> ... is that it gets the YUV4MPEG2 header wrong. One of the things
> it "guesses at" is the interlacing ('I' tag in the YUV4MPEG2 header).
> The other thing can be the sample aspect ratio ('A' tag), and finally
> the frame rate ('F') tag can appear as 'F29969999:1000000' instead
> of 30000/1001.
> Basically everything's progressive and has an unknown sample aspect
> ratio. You'll need to override a number of thing -starting with the
> fact that it's not really progressive ('Ip').
In mplayer's defense, after reading through your first note I went
back to its man page and realized that I had missed the "interlaced"
option to the yuv4mpeg output.
-vo yuv4mpeg:interlaced
is certainly an improvement for my material.
> There are tools in mjpegtools that can fix up the header (it's a bit
> ugly but it works ;)). You can use 'y4mtoyuv' to strip off the bogus
> header, and then use 'yuvtoy4m ...' to explicity specify all
> attributes
> of the stream (in essence generate a new complete header).
Even better. Brilliant.
I'll also check out that older version of Project X to see if I have
better results (and thus a more streamlined process than my current
one ... )
Thanks!
Jean
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