P: Canon Cinema RAW Light files from EOS C50 and EOS R6 Mark III display incorrectly

Ian,

Please can you delete my personal data from the first replies, I didn't realise the email reply would come to the public board.

Thanks 

Very glad to hear from you Ian, I’m desperate to not have to move to Davinci to make the most of the new camera.

Here’s the full bug report below and a A sample .CRM is being sent via WeTransfer to the same address above along with a screen recording:

Issue
Canon Cinema RAW Light (.CRM) footage from the Canon C50 shows severe display corruption in Adobe Premiere Pro 25.6.x on macOS Sequoia (M4 Pro).

Two symptoms occur:

Paused frames frequently display black or magenta bars instead of the actual frame.

Playback intermittently breaks, showing the same black/magenta block artifacts, even at 1/4 resolution or any playback setting (Full, 1/2, 1/4, 1/8).

Playback sometimes resumes normally after a few seconds, but paused-frame display is consistently unreliable.

This occurs only with Cinema RAW Light, and only inside Premiere Pro.

Steps to Reproduce

Create a new Premiere Pro project (25.6.3).

Import Canon C50 Cinema RAW Light (.CRM) files.

Place a clip on the timeline.

Start playback.

After a few seconds, pause playback.

Observe the Program Monitor.

Resume playback and continue watching—after several seconds, corruption may appear again.

To confirm it is not resolution-related:
8. Change playback resolution between Full → 1/2 → 1/4 → 1/8.
9. Observe that the corruption still occurs regardless of resolution.

Expected Result

Paused frame shows the correct image, identical to playback.

Playback remains stable at any resolution.

No black bars, magenta blocks, or corrupted overlays.

Actual Result

Paused frames frequently show black or magenta bars covering part or all of the frame.

Playback sometimes shows flickering black/magenta blocks even at the lowest playback resolution.

Playback itself is generally smoother, but visual corruption appears without warning.

Audio playback is unaffected.

Exports are correct (the issue appears only in Premiere’s viewer).

Screen Recording

(Attach when submitting)
Shows:

RAW Lite clip playing correctly

Pausing playback → immediate corruption

Changing playback resolution → corruption persists

Short examples of playback breaking during continuous play

Adobe Premiere Pro Version

25.6.3 – Build 2
(Same behaviour tested in Premiere Pro Beta 26.x)

Operating System

macOS Sequoia (latest available release)
System firmware and loader versions:

Firmware: 13822.41.1

OS Loader: 11881.140.96

System Hardware

MacBook Pro 14" – M4 Pro

48GB RAM

512GB SSD

Apple M4 Pro CPU

Apple M4 Pro 20-core GPU

Metal 3 graphics subsystem

Fully updated macOS

Video Format

Canon Cinema RAW Light (.CRM) from Canon C50.
Issue does not occur with:

ProRes 422 / HQ

H.264 / HEVC

ProRes proxies created from the same files

It seems the bug is isolated to Canon Cinema RAW Light decode on Apple Silicon M4 Pro.

A sample .CRM is being sent via WeTransfer to the same address above along with a screen recording

Comparative Information

Does it affect all projects or only some?

All projects containing Cinema RAW Light (.CRM).
Even brand-new empty projects reproduce the issue.

Does it affect new projects?

Yes — creating a new empty Premiere project still reproduces the corruption.

When did the problem begin?

It was present from the very first installation of Premiere Pro 25.6 on this M4 Pro Mac running macOS Sequoia.
Also confirmed in current Premiere Pro Beta 26.

Additional Notes

.BRAW files display fine

DaVinci Resolve displays and plays Cinema RAW Light flawlessly on this hardware.

Exported files from Premiere Pro are not corrupted.

Problem appears to be specifically in Premiere’s RAW decode → GPU display pipeline on Apple Silicon M4.




Feel free to call if you’re needing more information.

Thanks again,

Patrick Poletti

[personal information deleted by mod]

Hi @9054884 

Welcome to the Premiere Pro Forum community. Thank you for taking the time to report a problem. It would help us if you could use the link here, 'How to Report a Problem,' which provides steps to provide more information that can help us identify the issue. Also I have direct messaged you. If you could email me a link to some of the files you're experiencing issues with, we can take a look and see what is happening.

Here to help.

Ian