A7s III 4:2:2 choppy and stuttering playback on premiere pro 2022 (can't fix)

New Here ,
Mar 04, 2022 Mar 04, 2022

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Hello! So, first of all, my pc specs:

 

Windows 10 pro

intel i9 10900 2.8ghz

RTX 3080

32GB Ram DDR4

 

The problem:

I recently bought a a7s III and I'm using the 4:2:2 10 bit 4K 120fps XAVC-S h.264 format. And thats the problem. I CANT run the video preview in premiere (I tried to go back to 15.4.1 but its the same for me). The video lags a lot, sometimes it freezes, than come back afterwards. But I never never can see a smooth timeline, and this is killing my work. I already edited Red Komodo and Blackmagic 6k (at 6k) resolution and it was smooth. Please, I need help, cant work and deliver like this, its a mess!

 

I will post here a video of the problem, bc I tried to upload in here but it doesnt upload, do here is a google drive link in case you guys need it

https://drive.google.com/drive/folders/1oV9No42uQ8jBuDMrUN4_YZRUVhOh7ch7?usp=sharing

 

Things I already tried:

 - Format the PC

 - use a old version of premiere

 - I tried to use on my macbook (i9 10900 16gb ram) and its kind of like this too, not so choppy but terrible too.

 - using the High Quality Playback settings

 - using on 1, 1/2, 1/4 or 1/8 playback quality

 

Thanks!

 

 

 

 

TOPICS
Error or problem , Freeze or hang , Performance

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Adobe Community Professional ,
Mar 04, 2022 Mar 04, 2022

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That rig just can't produce 120 frames per second of H.264 playback. The larger formats you specified almost certainly were in intra-frame codecs, where every frame is complete by itself, simply compressed.

 

The H.264/long-GOP codec works by only making a complete frame every 10-30 'actual' frames, and in-between, it stores a matrix or chart of the pixels that 1) have changed since the last complete or " i-frame " ... or 2) will change before the next i-frame ... or 3) both.

 

So the computer has to decompress and decode a bunch of frames at the same time simply to play each frame. Vastly higher computer resource demand.

 

And it's hard enough for 'normal' speed work, 24-30fps. You're running this at 120 fps! Yea, it's a ton of load on the computer.

 

You will probably need to make proxies of those clips to get smooth playback ... do say half-resolution Cineform or ProRes proxies, they'll play back so much better.

 

Neil

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New Here ,
Mar 04, 2022 Mar 04, 2022

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Thank you for your feedback, I really appreciate it! So, to make this proxies, i do it as Quicktime? in proxy tab? 

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New Here ,
Mar 04, 2022 Mar 04, 2022

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And, mr R Neil Haugen, do you think that if I make an upgrade, will I be able to run this? or there isn't a cpu or rig that can sustain this much info?

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Adobe Community Professional ,
Mar 04, 2022 Mar 04, 2022

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120fps H.264 media is simply nasty stuff to edit from. I can't think of anything that would necessarily guarantee easy editing.

 

Some of the colorists I know simply transcode anything of this sort they get. On truly monster hardware with high-speed RAIDs and 256GB of RAM, massive GPU setups.

 

So having Premiere make ProRes or Cineform proxies would be the easier course.

 

Neil

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Guide ,
Mar 04, 2022 Mar 04, 2022

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Have to tried Quick Sync instead of Nvenc? 

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Advocate ,
Mar 04, 2022 Mar 04, 2022

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I'm facing the same problem. Sony files with subscrediting - 4:2:2 10 Bit 200 Mb, does not work smoothly in Premiere. And that's the trouble. More and more often we have to work with such a video format for client requests. Now 4K is becoming almost the main dominance of content in social networks. And 10-bit formats are increasingly coming and soon, if the situation is not corrected, Premiere will stall.

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