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Always used Quicktime without problem but, since changing computer (MacBook ProM1 - OS Maverick) the alpha channel no longer works. My .mov file shows a black screen. Neither the sequence nor the alpha channel appear. However, other .mov files (WITHOUT alpha channel) are displayed normally.
Any idea? Thanks in advance.
MacBook Air (2020 or later)
Hi, thanks, tried both methods but same result. I guess that Apple has not developed a codec able to read alpha in the new QTx and has never update Quicktime 7, the best Quicktime ever... it could read anything.
How can I work now....? Any alternatives?
Hi, thanks, tried both methods but same result. I guess that Apple has not developed a codec able to read alpha in the new QTx and has never update Quicktime 7, the best Quicktime ever... it could read anything.
How can I work now....? Any alternatives?
Greetings paolofree,
Thanks for visiting the Apple Support Communities! It seems you're unable to play .mov files which include alpha channel.
To help isolate the behavior, test while started in safe mode: How to use safe mode on your Mac - Apple Support
Additionally, test while using a different user account to see if the behavior is system-wide: Set up users, guests, and groups on Mac - Apple Support
Kind regards.
Alpha channel no longer works with Quicktime?
