Interlaced broadcast exports have severe errors on M1 macs. Even the beta versions of premiere and media encoder have the same problem.
Interlaced exports from both Premiere and Media Encoder suffer from severe encoding problems with M1 Apple Silicon macs. The resulting files have tons of encoding errors like green blocks, entire white screens, skipped or doubled frames, to name a few.
The exact same project on a Intel based mac has zero export problems.
Marwan Gedeon commented
Happened to me on a show an episode
came out on-air messed up. played perfectly fine on VLC, premiere pro, DaVinci Resolve, sony catalyst but when i played it back on QT that's where i saw double frames and blocking.
Decided to deliver APR422 and been doing that since. No issues till now.
The only thing i didnt try is sending to Media encoder and rendering using mercury software instead of Metal.
Ill try that tomorrow and post the results.
Sir Ros commented
I indeed tried to launch in Intel mode Antoine, unfortunately it didn't make a difference. When exporting with software-only settings Premiere simply just crashes after a couple of minutes and Media Encoder stops encoding. The encode cannot be resumed. If I tell Media Encoder to use Metal (GPU Encoding) and run in Intel mode, I get the same issues I get with the native Apple Silicon code regardless of whether I'm using CPU or GPU encoding.
Cameron McFadyen commented
Anyone have any success solving this? I am having the same issues.
Sir Ros commented
This isn't just an issue with interlaced broadcast exports. I'm literally having what sounds like the exact same issue on progressive scan ProRes files (regardless of which "flavor" of ProRes I choose at that,) when encoding from source material stored on a NAS. It does not matter if I render back to the NAS, directly to my M1 iMac's internal storage, or to a directly attached HDD/SSD connected to my iMac. If the source material is stored on a NAS, I will have a file that yield's everything that you're describing ranging from green or pink "macroblocks" to repeated/skipped frames, to white or black screens where video should be. Even worse, these occur somewhat randomly, so the first encode attempt might be fine in one spot but have a glitch in another, while the second encode attempt will have a glitch in the spot that was previously fine, and look great where the first encode glitched. I have tried duplicating this issue on Intel–based Macs running macOS Big Sur with the same point upgrades as the Apple Silicon Macs, ranging from a 2013 Mac Pro, to 2014 and 2018 Mac Minis, to various MacBook Pros from 2014-2017, and the same glitches do not occur on Intel–based Macs, nor do they occur on Windows PCs running Intel chips; this issue only occurs on Macs running Apple Silicon. I have tried using both Adobe CC 2021 and Adobe CC 2022, running both the Intel version of Premiere Pro through Rosetta 2 and the "Universal" version of Premiere Pro that runs natively on Apple Silicon, and I run into the same issue regardless of which version of Premiere Pro is in use. I have tried using CPU encoding only, using GPU (Metal) encoding, only encoding via Premiere Pro without Adobe Media Encoder, and exporting to Adobe Media Encoder to handle the encoding process, and the result is the same regardless. Normally I'm wired in over a 10GB ethernet connection attached via Thunderbolt, but I've also tried a standard gigabit ethernet connection and even WiFi; nothing makes a difference, the result on Apple Silicon Macs is always the same. This is a serious issue that has rendered all Macs that I've worked with that utilize M1 chips unsuitable for encoding.
Antoine Autokroma.com (Independent Developer of AfterCodecs, BRAW Studio, PlumePack, Influx) commented
Did you try to launch it back in Intel mode https://www.autokroma.com/blog/Apple-Silicon-ARM-M1-Compatibility-with-Adobe-Creative-Cloud-Autokroma ?