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Compressing 720p timeline to standard def DVD

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Lawrence Marshall
Compressing 720p timeline to standard def DVD
on May 1, 2008 at 6:23:01 pm

Apologies if this is elemental... I've graduated to HiDef editing only this past year. But I've not yet had to author a standard def DVD with a hi-def timeline (up until now I've been doing direct recording to a Pioneer LX1 recorder via Kona LHe card).

I edited a piece in Final Cut Pro, 720p timeline running at 59.94. No matter what I try, I can't get a nice, standard letterboxed DVD that plays smoothly. Either the DVD picture stutters slightly as it plays (presumably because half the frames were thrown away to get to 29.97), or I get a rapid overall flickering, as if every other field is gone.

My latest attempt: export the 720p 59.94 timeline self-contained. Bring it into After Effects. Drop that into a DV comp sized at 720 x 480. Scale the 720p movie to fit (51%). Render to Photo JPEG, lower field first. Bring that into Compressor (standard DVD, highest quality), then bring those assets into DVD Studio Pro. All is well, the DVD plays, except the DVD has all these anomolies that sure suggest something didn't get de-interlaced and/or transposed to 29.97 correctly.

Anyone know what the magic switch is that I am failing to throw?

Thanks, Larry


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Craig Seeman
Re: Compressing 720p timeline to standard def DVD
on May 1, 2008 at 6:41:52 pm

Are you using a 720p60 Easy Setup in FCP?

Have you tried bringing a self contained export from FCP into Compressor and just using a Compressor DVD Best Quality preset?

Although I've gotten what I'd describe as line twitter issues (fine horizontal lines move when the camera slowly zooms) I haven't seen anything like what you've described.

I usually check my work on a 1080p HDTV and a 13" SD monitor.

Exactly how are you checking your DVDs?



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Lawrence Marshall
Re: Compressing 720p timeline to standard def DVD
on May 1, 2008 at 7:46:46 pm

Yes, I have also brought in a self-contained export from FCP into Compressor, using the DVD "best quality" preset. This, too, yields "twitter" issues (we ought to add that word to our professional vocabulary). I, too, check my DVDs on a 1080p plasma and a 20" standard definition 4:3 TV.

Guess all I want is for the DVD to look as smooth as one would expect video to look (i.e. - as it looks coming out the Kona card downconverted to standard def), without the twitchiness on pans, etc. I could, I suppose, lay off the downcoverted signal from the Kona LHe card to standard-def tape or DVD recorder, re-digitize again, and work with now-standard definition footage. Somehow there has to be a more foolproof way...

Larry



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