errormojavequicktimevideovideo editing
I've edited an MP4 movie file in Quicktime Player Version 10.5.
When I try to save the edited file, I get: The operation could not be completed.
Does anyone know what causes this and/or how it can be solved?
macOS Mojave 10.14.2 / Quicktime Player 10.5 / MacBook Pro (Retina, 13-inch, Early 2015)
I recommend using the free app HandBrake to re-encode the movie, which will hopefully fix the problem.
Open HandBrake and it will automatically ask you to select a source (otherwise, you can use the Source toolbar item). Select the problematic movie and click Open.
Make sure the Presets panel is visible by clicking the Toggle Presets toolbar item. Then, under Apple, select the Universal preset.
The default settings should be fine, but you can tweak them if you like.
Click the Start toolbar item to begin. HandBrake will chug away and re-encode the file. That's likely to fix any problems with the encoding.
Found the answer here: http://support.apple.com/en-us/TS3771 Basically, you need to get iTunes to startup in 32-bit mode.
Best Answer
I had a similar problem when I downloaded a youtube video, opened in Quicktime to "trim" the video and quick time would not complete the operation. I ran the youtube video through Vlc Crunch (free video converter)as mp4 again and then Quicktime worked fine.