On Sun, 9 Jan 2005, Steven M. Schultz wrote:
On Sun, 9 Jan 2005, Trent Piepho wrote:
I thought that Dik meant the effective -q never went below 8, even though it go have gone all the way to 4 and still be within the target bitrate.
Exactly.
If that's happening it's a Bug. It might start out at 8 but
with 'cbr' I've seen the encoder vary (and over a wide range) the
effective -q in order to keep close to the specified bitrate.
I use very short DV photo slideshows for testing things, because I can generate them whenever I want. These slideshows which are static except from the transitions. When I don't specify the -q option, mpeg2enc will stick to effective -q 8 for at least a few seconds, removing many details from the image. So, the explanation is that mpeg2enc needs a few seconds of video material to 'get going' and everything will get better later on in the video?
I tried the anytovcd script by Nicolas Boos and it works beautifully. So I guess I'd better just use a two-pass VBR method.
Cheers,
Dik
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