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FCP > h.264 questions
When going from FCP to QT H.264 is there any quality beenfit by using a 3rd party app like cleaner or squeeze? quality out of fcp seems excellent.
One problem is adjusting gamma for windows playback. the QT conversion export has a brightness setting but no gamma.
Can I somehow nest the sequence into another sequence and then apply one filter to the entire sequence?
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7 Replies
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[Pat King] “Can I somehow nest the sequence into another sequence and then apply one filter to the entire sequence?”
Sure! Simply open a new sequence, drag the edited sequence directly from the browser into the timeline, then apply the gamma correction to the nested sequence. This trick is also very useful when applying the Broadcast Safe to a complete edited sequence.
BTW, are you sure QT for Win doesn’t take care of the appropriate gamma correction on the playback side ?
Alessandro.
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Thanks Allessandro – it would be nice if qt7 for windows made the gamma correction, but how would it know to do so? Anyone know wether it does?
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I believe QT for Windows does have the gamma correction built-in. It does for MPEG-4 Part 2 at least, and I would be surprised if it didn’t do so for MPEG-4 Part 10 (H.264, or AVC). I haven’t tested it myself yet, but I would think that the Sorenson Video 3 gamma issues have been fixed for H.264.
As far as wanting or needing to use a different H.264 encoder… Cleaner doesn’t encode H.264, so that is not an option. Squeeze has an awful H.264 encoder compared to Apple’s, so you wouldn’t use that either. That leaves the only other option on the mac being Compression Master 3.1 from Popwire. For multipass encoding and encoding to HD sizes, then I would still stick with Apple and Compressor 2. For single pass encoding and encoding to sizes smaller than D1 at lower bitrates, then I would likely use Compression Master 3.1.
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thanks. How does Qt know wether or not to adjust the gamma?
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[Pat King] “Thanks Allessandro – it would be nice if qt7 for windows made the gamma correction, but how would it know to do so? Anyone know wether it does?”
Encode a small sample and play it on both a Win and Mac machine, possibly two laptops to be able to do a side by side comparison.
Apart from minor differences due to sceen calibration, you should be able to easily detect major gamma issues.It’s just that easy 😉
Alessandro.
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Yes if I had a PC that is what I would do
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The gamma corrections controls are built in to the MPEG-4 encoder/decompressor. When the movie is opened on a PC, QT makes the automatic adjustments, as well on a mac.
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