Stuttering playback of HEVC 10-bit 4:2:0 on MacBook Pro M5. Porblem persists even if I render timeline or choose Render and replace (to ProRes). The same clips works flawless in PPro 26.x

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Stuttering playback of HEVC 10-bit 4:2:0 on MacBook Pro M5. On PPro 27.0

Problem persists even if I render timeline (in/out) or choose Render and replace (to ProRes). The same clips works flawless in PPro 26.x.

They have constant frame rate 24 fps.

I have applied no scaling or effects to the clip.

It stutters also when played in the source window.

Also if I export the whole sequence to other formats.

S

staffane84724493Author

Participant

Hi,

Thanks for the quick reply. I’ll start with the good news: it seems to work now. I first had the problem yesterday right after updating to v27, then I tried restarting the mac but the problem was still there. But today Premiere crashed, and when I opened it again the playback of these files worked! Strange but good :) I’ll get back to you if the problem reappears.

Anyway here’s the ansers to your questions:

1: 27.0.0 Build 88, Mac OS Tahoe 26.6.2

2: Full or half, tried both

3: That’s correct. The original file (HEVC) plays fine in Finder Preview or Quicktime player. The rendered/exported clip stutters in these players as well.

4: Premiere 26.5.3

If the problem reappears I’d be glad to send you an example, but that’s maybe not relevant at the moment when it actually works.

Best

/Staffan

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KatieToo

Community Manager

@staffane84724493 Thanks for providing us that update and additional details about this issue. Glad to hear it’s back to behaving! Sorry it was giving you trouble prior though, and we’ll leave this post open in case it should return soon. (fingers crossed it doesn’t)

Oh by the way, if Premiere should crash again, and you get that crash report dialog box, input your email in the blank spot (maybe the one associated with your Adobe is good), and then send us a DM which email that was so engineers can look up that specific report to see if it reveals anything. It’s okay if you didn’t yet or it hasn’t popped that, but should it do so, that could be helpful.

Much appreciated! :)
Katie

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KatieToo

Community Manager

Hi there @staffane84724493

Thanks for stopping by the Premiere forums and letting us know about that Mac issue with the 4:2:0 HEVC 10-bit playback in v27 Premiere.

1. Could you share the exact Premiere 27.0 build (under Premiere > About Premiere) and macOS version?

2. Is your playback resolution set to Full, ½, or lower?

3. Sounds like you’re having stuttering issues in Source Monitor, in the timeline after Render In to Out, on the Render Replace with ProRes clip, and now in the exported file. Additionally with that export clip, is it doing so when played outside Premiere (with what player) and also when imported back for playback in Premiere?

4. You mentioned that same type clip with the same Mac setup works well on v26 Premiere. Wondering which version/build for Premiere 26. Do you mean v26.5.2 perhaps?

If you’re able to share a short affected clip and a small test project privately, that would help us compare or recreate that issue’s behavior. We can DM you our private upload link for that purpose or you can DM us a link to those. Let us know if you want our upload link.

Sorry for the trouble with that, and we do hope to help!
Katie

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