Stephen Mann
Forum Replies Created
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While we say that DVD video is compliant MPEG2 files, you generally can’t put MPEG files on a DVD and expect the DVD player to play the video. Some will, but most won’t.
The DVD player is looking for a very specific file structure. At the root is your VIDEO_TS and AUDIO_TS folders. (AUDIO_TS is for the HD Audio format that never took off in the market, so it’s always blank. But, many DVD players are “looking” for both folders).
Inside the VIDEO_TS folder, there are one or more VOB files. And a bunch of other stuff, but we’re getting into details that really don’t matter because your DVD preparation program (DVD Architect, in my case) prepares all those files and the necessary file structures for you. VOB files are your MPEG files with a new filename. If your MPEG and AC3 audio files (and menus and extras folder) all total less than 4.5Gb, then your DVD burn program won’t need to recompress the files. (Unless the files themselves are not compliant, like the audio not in AC3 format, for example).
If your video needs recompression to fit the DVD, and if you’re lazy or in a hurry, you can let DVDA or whatever DVD program you use recompress for you. But the key here is RE-compress. When you recompress already compressed video, you WILL lose quality. If you have the time or picky to care about quality, the best workpath is to compress your MPEG file ONCE in Vegas, adjusting the average bitrate (look for a bitrate calculator) so that your DVD files will fit in a 4.5 Gb space.
No program or bitrate calculator can accurately estimate your compression bitrates without actually compressing the video. There are simply too many variables involved. If your video is an interview against a blank wall, the CODEC can compress the file a whole bunch without losing quality. But, if your video is a fast moving football game, then the CODEC will need a lot more I-frames due to the huge amount of changes between frames. The same amount of compression will look like crap. This also explains why those of us with experience don’t ever pay any attention to the DVDA file use estimator. It’s never accurate.
Hope my rambling helps..
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
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It’s safe to delete them, but Vegas will simply make them again the next time you start the project. They are small – just ignore them.
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
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No. Sony Vegas will not encode QuickTime h.264 files.
I have a client who insisted that the only delivery format they would accept was h.264 in a MOV file. (My client is an idiot).
You use the Sony AVC “render as” preset and select the highest resolution with the = in front (this means that the preset matches your project parameters). Then use Apple Quick Time Pro (it’s not free, but reasonably cheap) to make the QT file.
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
You’re running XP on an i7 processor?
Windows 7 64-bit is the first thing I would do.
Max your RAM while it’s still relatively cheap.Steve Mann
MannMade Digital Video
http://www.mmdv.com -
I ran into the same thing. The workaround is to double-up on the apostrophes.
“That”s All, Folks”
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
