quicktime export

[Grinner Hester]

You’ll wanna mix it down then export a reference file to Avid DVDit. It’ll encode a DVD for you.

[Pallas Weber]

thanks grinner,
i did finally do a mix down and it worked. do you know why i had to do a mix down to get it to work?
i converted the sample rates all to 48 but it still didn’t work until i did a mix down. i am compressing in compressor and then burn in dvdsp. thanks for your help.
pallas

[Terence Curren]

Hi Pallas,

Your next problem is that DVDSP assumes your file has RGB levels. Avid spits out 601 levels unless you tell it otherwise. If your DVD looks washed out in the blacks, that is what is happening.

Terence Curren
http://www.alphadogs.tv
http://www.digitalservicestation.com
Burbank,Ca

[Grinner Hester]

When avid “upgraded” their product line from meridien, a bug was introduced that adds interlacing to any and all precomputes. They have still not seen a reason to fix this bug.
As a result, we have to mix down our stuff with drive space we often don’t have and if you look real close, you’ll see that mixdown adds a few lines of blanking up top as well.
In short, they’d rather us sacrifice time, space and wuality to make web approvals and DVDs than to fix a bug that should have been fixed before a version 1 release.

[Pallas Weber]

Hi Terry!

thanks for the info. to avoid the washed out blacks do i need to change the setting in dvdsp or is it better to change it in the avid export settings? also, i used compressor to compress. i am under the impression that compressing in compressor as opposed to dvdsp will make for a better looking dvd,
is this correct? or does dvdsp compress again making for an uglier dvd? thanks so much for sharing your info.
best,
pallas

[Pallas Weber]

thanks Grinner,
i didn’t mix down the video… only the audio. should i have mixed down the video as well?
thanks so much for the help.
best,
Pallas

[Michael Phillips]

I usually export a QT reference to Sorenson, set levels to be 16-235 and encode. AS TC points out, many encoders ecpect RGB levels to be 0-255. If that is the case, select RGB when exporting QT ref from Media Composer.

Michael

Michael Phillips

[Terence Curren]

[pallas weber] ” to avoid the washed out blacks do i need to change the setting in dvdsp or is it better to change it in the avid export settings? also, i used compressor to compress. i am under the impression that compressing in compressor as opposed to dvdsp will make for a better looking dvd,
is this correct? or does dvdsp compress again making for an uglier dvd?”

Compressor does the compression to create the MPEG files. DVDSP “Muxes”, or mixes all the data into one data stream. No compression is actually happening there.

I don’t think Compressor has a setting to interpret 601 levels, ( I reserve the right to be wrong here) so you would have to do it at the export from Avid stage.

Terence Curren
http://www.alphadogs.tv
http://www.digitalservicestation.com
Burbank,Ca

[Pallas Weber]

Thanks TC,
i just finished re- exporting and re-compressing.
thanks everybody for your help.
Best,
Pallas

[Job Ter burg]

[i]a bug was introduced that adds interlacing to any and all precomputes[/i]
Huh? Can you elaborate on this?
Are precomputes not simply in their same-as-source mediatype (p/i)?