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QT Compression: NONE?
Greetings. Have a weird one, here. I’m on FCP with an
AJA IO, received a QT file from an AVID on a PC. It
was basically a 601 clip with no compression (under
clip file format in QT and FCP, compression reads
“none.”) The clip comes intp FCP, plays fine in a
sequence that has compression similarly set to “none,”
but FCP ain’t behaving right. The clip doesn’t show in
the Canvas, can’t read it on the scopes, can’t use
overlays in the Viewer. And when I add another video
track for a lower third or graphic, it seems to render
okay but FCP crashes (quits) when I try to play the
timeline. Identical results on several attempts.Seems clear the culprit is the “None” compression on
the clip. I’ve never used this setting before and
don’t know anyone who has. I’ve given the post house
the AJA PC codecs to try and use the 10-bit
uncompressed option, but I’m curious about why the
“None” clip would play flawlessly as it does, yet have
all these other problems in FCP.Awaiting response from all fellow head-scratchers.
Thanks.
Michael Colin
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2 Replies
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There are a number of codecs that don’t work well within FCP for various reasons (most of the MPEG codecs, the Avid codec, None).
“None” was never intended to be an editing codec. Its purpose is to move media losslessly between different programs and platforms. Its very processor intensive to play this type of file…though Quicktime player can handle it on a robust system, QT Player uses far fewer system resources than FCP, which is doing many other things than just playing back the video.
You did the right thing converting it one of the uncompressed editing codecs.
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The None Codec is used like the Animation codec. It’s used for intermediary purposes only (like preserving quality of renders)
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