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Wave distortions on the dvd I burn

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ilya zaslavsky
Wave distortions on the dvd I burn
on Aug 18, 2012 at 5:32:01 am

Hi

I have finalized a short film that I want to send to film festivals. I follow the manual from the film school, and burn a dvd. When I look at one particular notebook through an hdmi on a tv screen (just to test the dvd), there are two moments in the film which for some unexplicable reason show quick distortion across the screen as a horizontal wave than quickly goes from top to bottom. On Mac (where I did this film in Final Cut Pro 7) it does not have any distortions when I play the dvd. I want to send a clean dvd version. How can I know that it does not have distortions: is it a notebook problem, or there is some thing happening wrong during the burning of the dvd. I burn first play dvd according to instructions: through compressor, than I choose standard layout 1220x800. Should I do something about settings? or there is some of other universal way that will guarantee that dvd is compatible to play clearly on people's computers and dvd players?


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Jerry Hofmann
Re: Wave distortions on the dvd I burn
on Aug 18, 2012 at 4:27:00 pm

How did you compress the video for the DVD? How long is the project? Try exporting a self contained QT movie using current settings, and open that in Compressor for the encoding.

Jerry

Apple Certified Trainer, Producer, Writer, Director Editor, Gun for Hire and other things. I ski. My Blog: http://blogs.creativecow.net/Jerry-Hofmann

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ilya zaslavsky
Re: Wave distortions on the dvd I burn
on Aug 18, 2012 at 8:18:53 pm

Hi,

thanks for the response.

I compress dvd by first rendering all in the sequence: Sequence>Render All > Both
then I control click on the sequence and send it to compressor: Send To > Compressor
When Compressor opens I click in the Window drop down menu at the top of the
screen and choose Layouts > Standard 1280x800.
In the Settings Window, I click on the Settings Tab. I then open the folder Apple > DVD > DVD: Best Quality 90 Minutes. II then highlight both of them and drag them into the Batch Window where it says Drag Settings and Destination Here.
I then Control+Click the word SOURCE and choose Destination > Other. And I choose a folder that I created there.
After I compress it and get two files on the hard drive I then send them to DVD Studio Pro where I create a First Play DVD on DVD-R blank disc. i first simulate (no waves shown in simulation!) then press Build and then Format.

The film is 21 minutes long.

I am not entirely sure what do you mean by self contained Quick Time movie? By settings you mean that I should not change anything in Final Cut? but I have not. I just render all, that's all. And by opening in the compressor for the encoding, where is that option?

I looked at a youtube video that shows that someone just does a dvd from final cut directly to dvd. Do you think that for festivals I should still better to go through compressor and DVD studio? I guess that's the standard best quality way? Sorry if too many questions, I am just an amateur but the film that we did is high quality and it would be a pity to impact that adversely at this last stage.


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Steve Eisen
Re: Wave distortions on the dvd I burn
on Aug 18, 2012 at 9:09:33 pm

The steps Jerry is referring to are in the FCP manual. What you want to do is select File/Export/QuickTime Movie. Check self-contained movie. This will create a file base movie in the codec which you edited. Open up Compressor and drop that file into Compressor. Select a preset for DVD. 60 minute with a CBR of 7 is perfect. Also select an AC3 file for your audio. As I said, this is in the manual.

This gives you more control over Send to Compressor feature.

Steve Eisen
Eisen Video Productions
Vice President
Chicago Creative Pro Users Group


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Rafael Amador
Re: Wave distortions on the dvd I burn
on Aug 19, 2012 at 2:55:32 am

[ilya zaslavsky] "there are two moments in the film which for some unexplicable reason show quick distortion across the screen as a horizontal wave than quickly goes from top to bottom. "
If this happens always in the same two scenes, could be a problem with the film or with the media (disc).
I would start by trying another brand and playing in different devices.
If the problem remains, i would have a look to the film/compression.

[ilya zaslavsky] "I compress dvd by first rendering all in the sequence: Sequence>Render All > Both
then I control click on the sequence and send it to compressor: Send To > Compressor"

If your sequence is fully rendered andplay well in FC's canvas (set it at 100%), DONT SEND TO COMPRESSOR will duplicate the processing time).
Export a QT movie and import that to Compressor.

[ilya zaslavsky] "Do you think that for festivals I should still better to go through compressor and DVD studio? I guess that's the standard best quality way? "
is not about quality, but about control.
With Compressor/DVDSTP you have more options and you can tweak parameters to optimize compression.
rafael

http://www.nagavideo.com


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