cvd bitrate parameters, what makes svcd so special?

[adam]

Wow Vidguy I didn't know mpeg2vcr could do that. That is an incredibly useful feature. Have you tried it to see how well it works?

energy: Yes it can decrease quality, basically in the GOP surrounding where the I-Frame was added. This could potentially also introduce sync problems, but I've never seen how well mpeg2vcr can do this, since I didn't even know it could. Its basically the same as when TMPGenc cuts. Unlike alot of other mpeg cutters, TMPGenc lets you cut on any frame by inserting an I-Frame there and then re-encoding all other frames in that GOP. The benefit is frame accurate cuts. The downside is the slight loss in quality and the potential for desync. But assuming you don't lose sync, the quality loss is probably negligable. The insertion of the I-Frame only affects that GOP, so basically you are talking about 1 second worth of your movie. Of course this will happen everytime you GOP exceeds the standard length.

[VidGuy]

I just noticed this ability the other day - I think someone in one of the doom9 forums mentioned it for fixing PTS timestamps and when I looked at it - I was impressed that it had the GOP size fixer, so just had to try it out......

I've tried it on one film, and the film seemed to work OK after I was done (no sync issues), and it imported into Scenarist after doing it (it wouldn't import prior to running the GOP fixer).

I didn't really look closely at what it did, but I assume it just created an extra GOP where the frame was too long........