Speed changes not encoding in quicktime conversions

[Jerry Hofmann]

Not using xdcam so don’t know of issues there, but what are you needing to do for what reason? QT conversion will recompress the files, but QT export using “current” settings won’t.. you need to convert it to another format? Which one?

Jerry

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[Alex Bluffield]

Hi Jerry

I usually convert using quicktime conversion to a 640×360 frame size with AAC audio at 44khz, 128bitrate and video setting left at high. This is to upload to the web. On this occasion I was uploading to Vimeo. As I said I’ve never had this problem before – I can only think it’s something about the xdcam ex codec that quicktime doesn’t like?

Alex Bluffield
Final Cut Pro Editor
W: https://www.a2bpostproduction.co.uk

[Jerry Hofmann]

I think there’s a problem with the GOP structure being transcoded to yet another GOP structure in the media files you’re working with, and it may well be a bug in FCP 7… but that said, here’s my thinking on a work around:

Try exporting one of the errant clips by itself to ProRes. then encode that to the H.264 codec you’re trying to use…and see if the problem goes away. If this works, change the render controls in your XDCAM sequence to render to ProRes… if that fails, then you’ll need to export the whole sequence to ProRes, and encode that…

Jerry

Apple Certified Trainer, Producer, Writer, Director Editor, Gun for Hire and other things.

8-Core 3.0 Intel Mac Pro, Dual 2 gig G5, AJA Kona SD, AJA Kona 2, Huge Systems Array UL3D, AJA Io HD, 17″ MBP, Matrox MXO2 with MAX Cinema Displays