progressive sequence has wavy/interlace-like problems
by Kathy Anderson
on
Sep 12, 2008 at 9:20:29 pm
Hi!
I'm working on a number of videos using a 1280 x 720 p, 59.94 timeline. I'm using Apple Pro Res 422 for the compression. My first video turned out fine when taken through Compressor with the HD settings - CG when moving side to side moves smoothly, lettering on machinery is smooth as well. My other sequences, also theoretically set up the same (using AJA IOHD 720p 59.94 preset), show fine in the FCP canvas, but when exported through Compressor, have wavy lines when things move - like CG or the machinery lettering, solid when stationary. Really only shows up with white - isn't as obvious with colored objects. Crawls are really bad while rolls aren't so bad.
Any thoughts on what might be going on? I'm trying an experiment where I've stripped off the video on the one good sequence and have plopped everything from another sequence on top to see what happens. It is rendering now and hopefully in an hour I'll be able to start Compressor and by tomorrow AM know if that has fixed the problem.
Re: progressive sequence has wavy/interlace-like problems by Michael Gissing on Sep 12, 2008 at 11:42:18 pm
What are you using Compressor to export to? ( target codec?, exporting for DVD?, converting to standard def?) What are you watching the file on, your computer screen or an external monitor?
Field order issues can be introduced at many levels so without that info it is hard to guess.
Re: progressive sequence has wavy/interlace-like problems by Kathy Anderson on Sep 13, 2008 at 12:03:59 am
Thanks for reading my message!
I'm going to the standard HD preset for 30 minutes or less on a DVD-5. The standard def one that exhibited similar problems is the regular DVD present for 90 minutes or less, best, anamorphic - that's interlaced obviously - but I've never had this issue pop up with the regular DVD before.
As for how I watch, my Mac and external hard drive are underpowered enough that I cannot watch videos while in FCP on another monitor - so I watch strictly on the FCP canvas. When I checked the files after Compressoring, again it was just the Apple Pro computer monitor, and I could clearly see the first video was AOK while the others had the problem.
I had taken one of these funky files (in an earlier stage of production) and had a blu ray burned off site, and we noticed interlacing problems at that stage, but put it down to the monitor at the studio being set for 1080i as opposed to 720p. Now I know better.
By the way, I had used Inspector on Compressor and it indicated things were still 720 p.
Could my Compressor be on the fritz somehow? I'm Compressoring now the footage I put over top the "good sequence" and but it's got several hours to go, so I won't know if this test is successful till later Saturday.
Kathy
Flash update!
Reusing the original sequence that yielded the good video has worked! The new files Compressored out just fine.
Could there be some kind of hidden setting that I'm missing on all the other sequences as they all appear the same in the sequence settings window? Is it possible to duplicate a sequence over and over, without using the presets so I could make many copies of the sequence that works rather than keep playing with the single one?
Re: progressive sequence has wavy/interlace-like problems by Michael Gissing on Sep 13, 2008 at 12:26:41 am
[Kathy Anderson]"
Could there be some kind of hidden setting that I'm missing"
There must be a difference between the sequence settings. Have a look at the settings particularly if whether fields are set to upper, lower or none.
You can always create and save a custom setup with the settings from your working sequence and then use that as your Easy Setup each time you create a new sequence.
Re: progressive sequence has wavy/interlace-like problems by Kathy Anderson on Sep 13, 2008 at 12:35:40 am
Thanks, Michael! I've not tried saving the settings on an existing sequence so I'll give that a whirl. I did check the fields issue and all of them said none, which is what you would expect with progressive.
Not quite sure why the one standard-def-created file is having issues though - I can't put it in the good high def sequence. I may just have to change how I handle the CG on it till I figure something out - or someone comes up with some other ideas I can troubleshoot.
