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Motion problems in Compressor
Posted by Courtney Griffin on October 7, 2009 at 9:05 pmPlease share your links or thoughts on how to avoid motion problems (those annoying lines in the final product) – hopefully you have some links in which the language is accessable as I’m not a seasoned authorer, I just do it because I need to for my projects. So simple is best.
Does it have something to do with size, frame rate, encoding?
It took me 12 hours to encode one 90 minute film, and I STILL got those crazy lines.
Thank you!!!
Eric St-martin replied 16 years, 6 months ago 4 Members · 5 Replies -
5 Replies
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Alexander Kallas
October 7, 2009 at 10:24 pmWhat Codec and specifications is your source media, and what Compressor settings are you using?
Also your hardware specs?Cheers
Alexander -
Arnie Schlissel
October 8, 2009 at 1:47 am[Courtney Griffin] “how to avoid motion problems (those annoying lines in the final product)”
Do you mean interlacing?
That’s not a “problem”, that’s the nature of standard definition video. You might try deinterlacing your footage, but that will make your video less sharp.
Arnie
Post production is not an afterthought!
https://www.arniepix.com/ -
Eric St-martin
October 8, 2009 at 7:11 amCourtney, you are right. Allthough not that many people seems to complain about it yet, there is a bug in compressor 3.5 which completely screws-up it’s ability to output video with size transformation. This problem occurs regardless of the type of the source file (codec, interlace or pogressive, intraframe only or GOP).
It looks like the frame control setting is ignored which disturbs the result even for convertions from 1080p to 720p but the problem becomes even more obvious (and then I mean event for my dead grand mothers eye) when producing SD DVD. The result is basicaly single field output that is line doubled in a progressive mpeg2 which leaves us with a fantastic resolution of 720×240. Btw any output codec will display the problem. Even h.264 mov.
On compressor forums, people are starting to complain about the problem and reinstall from scratch (even Osx) didn’t solve the problem.
The only solution I found which would have offered a temporary workflow while we are waiting for the fix from apple didn’t work completelly, is much longer and anihilate any chance of automation but I will still share it with you:
1- export from fcp with “export using QuickTime conversion”. Make sure you resize the video to 720×480 right then using the anamorphic pixel setting for 16:9 content. Use the same codec as your origin or a flavor of apple prores of your choice.
2 – use compressor to produce the DVD files. Compressor still does a great job when it doesn’t resize.Now the main drawback is the following: with QuickTime conversion, the edit markers and compression markers are lost. So when compressor takes the file, it doesn’t have hints as to where to put the key frames. So some transitions and pans look bad.
But voilà. Hope it helps.
Eric
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Alexander Kallas
October 8, 2009 at 11:18 pmCan you give us your exact workflow, and post a sreen-shot of your settings?
More often than not, incorrect use of the software is the problem, not a bug.Cheers
Alexander -
Eric St-martin
October 13, 2009 at 12:37 pmThis is what I’m referring to https://discussions.apple.com/thread.jspa?threadID=2109359&tstart=0
The problem occurs when ever frame resizing is in play with compressor 3.5.
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