I am going out of my mind trying to trim extremely long 4K MOV files that were shot on the Lumix S5. Some files are up to 30 minutes long with only a minute or two of content that needs keeping. In terms of media management, I need to trim the clips without loss or re-encoding.
Lossless Cut seemed too good to be true, and the resulting clips seem to be the correct size in terms of data - for example if I cut half of a 20GB file the resulting file is the expected 10GB. BUT the new clip won't import into Premiere Pro. Only audio comes in. Furthermore, if I try to play it in VLC it is also audio only, with the warning 'VLC could not decode the format "aivx" (No description for this codec)'.
I can't get my head around why there is a codec issue if there is no re-encoding and the original file plays fine in both Prem and VLC. I also tried Shutter Encoder and the result is exactly the same. Despite digging for information it doesn't seem to be a reported issue by anybody else. I see tutorial videos of people splitting their files and playing them back no problem, so is this something specific to the format of Lumix S5 files?
Any advice greatly appreciated!
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