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Sony A7S footage choppy on new machine

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Markus Stone
Sony A7S footage choppy on new machine
on Jul 1, 2020 at 3:37:54 am
Last Edited By Markus Stone on Jul 1, 2020 at 3:39:53 am

It's only 1080p at 50fps, encoded as H264.

Three and a half hours of it (so transcoding doesn't sound like fun).

I have interpreted the footage as 25fps, so the strain on the machine should be the same as normal 1080p because it's playing 50fps footage @ 25fps.

Anyway it's a new laptop that I thought would be able to handle this, but maybe not.

It's a Lenovo P53S.
Intel i7-8565 @1.8GHz
16MB Ram
Quadro P520
Footage on external SSD coming in via via USBC 3.1 Gen 1

So to describe what I'm seeing, the footage plays, but it's like it's playing the frames out of order, so I'll see it flickering back and forth between random frames within the clip.

The project plays fine on my beefier desktop machine with RTX2080, i9 processor and 64GB RAM, so it's not data corruption. I'm hoping there's a config option I've missed or something.

Any help much appreciated.

Cheers

Markus


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Markus Stone
Re: Sony A7S footage choppy on new machine
on Jul 1, 2020 at 8:01:17 am

Hmm - reckon I might have found me the problem.

I restored Premiere to version 14.0.0 and it works much better.

Cheers

Markus


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John Heiser
Re: Sony A7S footage choppy on new machine
on Jul 2, 2020 at 3:51:13 pm

Don't forget that completely deleting the cache files can solve a number of stability and playback issues, especially after upgrading to a new version. Changes in the software mean Premiere may need different cache files, so this is a necessary step (it also can solve some weird pop-up playback issues unrelated to upgrading). When you upgrade versions, follow the recommended steps for deleting all your cache files. Look up the procedure in Help (I think the instructions are also in the Media Cache tab in Preferences) - it involves opening Premiere Pro without opening a project, then going to Preferences > Media Cache.

John Heiser
Senior Editor
o2 ideas - Birmingham, AL

iMac Retina 5k, 27-inch, 2017
4.2 GHz i7, 32GB RAM, Radeon Pro 580 8GB
G-Speed Studio TB-2 12TB RAID-5


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