Recompressing Video

belial wrote on 8/6/2003, 3:58 AM

OK, I spent a good 10 hours compressing the footage to Mpeg2 using TMPEGENC with the settings just the way I want them.

I then include the new mpeg into DVD-A and spend a couple of hours making the menus, just the way I want them.

I then go to optimise the disk, and find that it wants to recompress the video footage.

WHY?

ANd why can't I STOP it from wanting to recompress my video?

I didn't spend all that time on this to let recompression damage my video quality anymore than it already is. If I knew it HAD to compress my video I'd have been working with DV all the way up to this point in order to avoid it.

And besides, I don't trust the codec in vegas/DVD-A, I prefer to use Tmpegenc.

Can someone please tell me how to stop this thing from attempting to recompress a perfectly good mpeg?

I mean, I can live with the audio being redone (although why vegas video saves out Audio Layer 2, and DVD-A only does PCM and AC3 is beyond me).

..belial..

Comments

jeffcrow wrote on 8/6/2003, 11:59 AM

There are two reasons why DVDA may recompress:

The total content of the disk exceeds disk space, DVDA will rerender at a lower bitrate to make it fit.

The mpeg2 file does not meet the criteria of DVDA. For some reason, if the mpeg clip does not have the correct settings, DVDA will insist on rerendering to make sure it does. I don't know why it would need to do this. If they are going to do that, then they need to publish what those requirements are.

For now it is best to use a DVDA template in Vegas to render or just let DVDA do the rendering. Well best in the sense that it saves the extra time of two renders.