Re: LS300 memory card issue...
 

You might be right but I know for a fact, as a beta tester for video software in the past, that JVC has historically ignored industry software protocols. Many JVC devices with FireWire control didn't use the proper device identifiers to interface with NLEs. These identifiers would be programmed into the FireWire controller chip and would tell the whatever was querying the JVC device, what the JVC device was and what it could do. The software programmers had to work around it. In our case here, as explained in another thread, the LS300 doesn't fully communicate properly with a number of M43 lenses even though the camera is designed for that standard. Some lenses work fine, others are usable yet hobbled. The cause for that problem is up to speculation. That the YUV file implementation isn't quite right isn't too far from possible.

Re: LS300 memory card issue...
 

It's frustrating that JVC's engineers haven't been able to provide full compatibility with all MFT lenses, in particular, OIS support which is lacking for many lenses. The reason, however, is glaringly obvious - Panasonic's refusal to release full engineering documentation on the implementations of their MFT lens protocols. This policy has forced third party manufacturers like JVC and Sigma to resort to reverse-engineering only as many lens features as they have had resources to test:

dvinfo.net/forum/attachments/jvc-4k-pro-handheld-camcorders/37060d1485272205-ls300-lensprotocols-jvcjyls300_tested_lens_info.pdf

In my experience, desktop playback of 4:2:2 color depth in H.264 files has always been problematic, not just in Quicktime but with many third party video players as well. I've also seen encoding errors occur in custom 4:2:2 files produced by MainConcept's professional H.264 encoder. Most hardware manufacturers like JVC don't develop their own H.264 encoders, they license reference encoders and configure them specifically to support the features of each camera model. Here's an example of a similar playback issue with files produced by a Canon camera that uses the same Quicktime encoder (2007.09) used to produce JVC 4:2:2 MOV files:

https://discussions.apple.com/thread...art=0&tstart=0

Re: LS300 memory card issue...
 

Does anyone know if the LS300 plays nice with Sony Vegas? I'm running v12.....