trim mpg media in DVDA?

douglas_clark wrote on 1/16/2011, 6:15 AM

By mistake I rendered an entire 3 hr project to mpg in Vegas 10c (Main Concept DVD Arch PAL video stream), rather than loop region only. It took all night, resulting in an 11 GB mpg file. I'd like to avoid re-rendering if possible.

Is there a way to get DVDA to trim the mpg file when preparing the project, so I can burn just the intended section of the video? I can set the end point where I want on the DVDA timeline, but DVDA still indicates that the project is 11 GB.

Comments

TOG62 wrote on 1/16/2011, 6:37 AM

I don't think that you can do that. Trimming will allow the play to start or stop the footage at the specified point but will still write the whole clip to disc, with the remainder simply unaddressed.

john_dennis wrote on 1/16/2011, 8:27 PM

Not sure if this will work with PAL since I don't do PAL, but:

If you have separate MPG and ac3 or PCM Audio files, mux them to a single ts wrapper with tsMuxer.

Open the newfile.ts with VideoReDo or some other MPEG-2 cutter. Cut out the segment that you wish to use for your DVD and save the result.

Use tsMuxer to demux the cut file into separate video and audio streams. Use those files in your DVD Architect project.
I just cut 10 minutes from the middle of a DVD project and prepared a DVD folder in DVD Architect in less than ten minutes.

Arthur.S wrote on 1/20/2011, 9:11 AM

Why not just trim the rendered file to what you want on the Vegas timeline. Then re-render using EXACTLY the same render settings as before.Vegas should then run through it with 'no compression' creating a new file in a very short time.

A-ROB wrote on 1/23/2011, 8:22 PM

Wow, does Vegas really do this? I've never heard of this before? Does it also do this with AVC or any other file-type, or just mpg.?

PeterDuke wrote on 1/23/2011, 11:47 PM

Vegas Pro 9c was the last version that would "smart render" AVC provided certain conditions applied. Sony in its wisdom removed he capability from later versions presumably because of problems which were too hard to fix.

I don't think DV AVI smart renders, but generational loss is so small that it is probably a non-issue.

Cineform should smart render too. I don't know about other cases.