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choppy playback - I'm a bit lost

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I am preparing some sequences for projection on a large screen at an important event next week. I am having some problems with some of the footage. I just can't get to the bottom of the issue or work out a solution.

I am working with some progressive 1920 x 1080 YUV footage shot from a helicopter. I have imported it into MC at DNxHD 444 365 X (1080p) RGB. I have colour graded and then exported the sequences in a proprietary format DXV https://resolume.com/software/codec for the video playback software I’ll be using on the night.

Some of the movement in the original footage is a little choppy - I guess that's progressive filming with objects moving through frame. But when I watch some of the finished sequences played out from my MacBook Pro (on a Sony TV) at times it looks pretty bad. This is not a general playback issue and is certainly not across all my sequences. It's a brand new top spec MacBook Pro so it's not struggling.

I've carefully gone through the chain but can't quite find out what's going on and where. Occasionally the original rushes will playback really unstably through QT Player (with different frames flashing up during playback) but that's rare. Related? I don't know.

I'm really concerned about how this is going to look on a very large screen but don't know what to do about it.

When I play the sequences on my Mac Pro connected to a large 4K screen or fullscreen on my MacBook Pro things look better. The worst results are on my Sony TV connected to my laptop via HDMI - that's the closest I can get to simualting what will happen next week. But that screen will be a lot bigger.

Is this something to do with interlacing and progressive?

I'm at a bit of a loss. Can anyone help?

Thank you : )

 


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