Known issues in Adobe Media Encoder

General known issues

Corrupted CPU warning banner in the Media Encoder preview

Issue: When an effect falls back to CPU rendering and no CPU implementation is available, Adobe Premiere, After Effects, and Media Encoder show a warning banner. In the Media Encoder preview, the banner may appear corrupted and not show the warning correctly.

Workaround: We'll let you know when a fix is available.

Copy Media fails when importing Sony FX6 MXF files from the Sony folder structure

Issue: When importing Sony FX6 MXF media using the camera’s native folder structure with Copy Media enabled, Media Encoder hangs and does not copy the media to the destination folder.

Resolution: Import the media without enabling Copy Media, or move the MXF files out of the Sony folder structure before importing.

Adobe video applications and macOS Sequoia compatibility issues

Issue: macOS 15 Sequoia asks permission every time before launching any video apps, including Adobe Premiere, After Effects, Media Encoder, Audition, and Character Animator.

Resolution: We'll let you know when a fix is available. Until then, you can try this workaround.

Behance uploads fail in Media Encoder and Premiere release 25.5 and earlier

Issue: A security API update in the Identity Management Systems of Adobe is preventing Behance uploads from Media Encoder and Premiere versions 25.5 and earlier.

Resolution: To continue uploading to Behance, update to the latest versions of Media Encoder and Premiere, or manually upload exported videos via the Behance website.

November 2026 Release (Version 27.0) 

Exports fail on Windows when “Use Proxies” is enabled

Issue: On Windows, exports fail without displaying an error message when Use Proxies under General is selected in Premiere export settings.

Workaround: This issue is fixed in version 27.1. Update to the latest version of Premiere and Media Encoder when it’s available.

April 2025 Release (Version 25.2) 

Content credentials scanning delays on large file imports.

Workaround: When importing new files, Premiere scans supported file types for content credentials in the background to prevent performance degradation during playback and editing. With very large files, this scanning may not be completed before export. If content credentials are required in the exported file, wait until their status is correctly displayed in the project panel before exporting. This ensures that the credentials have been successfully read and can be included in the final file.

Media Encoder automatically scans for Content Credentials and processes them accordingly when adding files to the encoding queue, manually or through scripting.

For Premiere project files, the Media encoder only uses the Content Credential information embedded within the project file without performing an additional manual re-scan of the project’s content.

October 2024 Release (Version 25.0) 

Issue: The current CEP version doesn't support Vimeo's Cloudflare authentication method yet.

Workaround: Login with a 24.x version or upload manually.

August 2024 Release (Version 24.6) 

Non-functional checkbox in the Audio Channel Configuration section

When a file is in the queue and the QuickTime option is selected in Export Settings > Format , the Audio tab's Audio Channel Configuration section contains a non-functional checkbox. 

May 2024 Release (Versions 24.4 and 24.3) 

Offline MXF file on export from Ae to AME (Windows Only)

When an After Effects composition is sent to the AME queue, the links to the MXF files are lost.

December 2023 Release (Version 24.1)

Issue: Video effect manager in Adobe Media Encoder does not list fxFactory effects on Mac.

Resolution: Upgrade to the latest version of Media-Encoder. This issue is fixed in the latest version of Media Encoder.

Adobe Media Encoder crashes while attempting to copy-ingest some camera cards

Issue: Adobe Media Encoder crashes when using the ingest-copy setting to import certain file structure camera cards such as ARRI, AVCHD, Canon XF, Panasonic P2, Canon RAW, XDCAM EX, or XDCAM HD. This issue is in Adobe Media Encoder, which also impacts Premiere as the application relies on Adobe Media Encoder for ingest.

Workaround: Copy the camera card first, then import through the media browser with Ingest settings turned off.

August 2023 Release (Version 23.6)

The export function fails when publishing media Twitter (X)

Issue: The export function fails when a user attempts to publish media directly from Adobe Media Encoder to Twitter (X), given recent changes at Twitter (X) and to their APIs.

Workaround: This issue has been resolved for our next release. In older versions, users must export media locally and publish to Twitter (X) through Twitter (X).

June 2023 Release (Version 23.5)

Hardware-encoded HEVC files on an Apple Silicon cannot playback or seek

Issue: Hardware-encoded HEVC files generated on an Apple Silicon cannot playback or seek.

Workaround: Disable hardware encoding  HEVC outputting.

Dynamic Link compatibility issues (Windows only)

Issue: Using Dynamic Link between app versions of 23.5 with lower versions of 23.x causes rendering issues in Windows.

Resolution: If using version 23.5 of Premiere, After Effects, or Adobe Media Encoder, ensure all video apps have been updated to 23.5. Exception if you're using Character Animator: since there is no Character Animator 23.5, you must instead make sure all of the video apps are an earlier version of 23 (23.0, 23.1, 23.2, 23.3, or 23.4), or, if your use of Dynamic Link for Character Animator is limited to exporting via Adobe Media Encoder, you can instead use the Quick Export command as a workaround, as it's unaffected by other app versions.

December 2022 Release (Version 23.1)

Export issue for H.264 and HEVC with Adobe Media Encoder 23.1

Issue: An issue affecting H.264 and HEVC or H.265 exports on Windows with Adobe Media Encoder 23.1.

The issue impacts H.264 and HEVC or H.265 exports to folders with names that use double-byte characters, such as Chinese, Japanese, Korean, or extended ASCII characters, like accents and umlauts.

Affected users will see this message: “File importer detected an inconsistency in the file structure of %filename.mp4%. Reading and writing this file’s metadata (XMP) has been disabled.”

Workaround: We'll let you know when a fix is available. But if you're experiencing this issue, use one of these options:

• Choose an export destination folder that uses only single-byte ASCII English characters (no accents, umlauts, etc.).
• Export to a different format, such as Apple ProRes.
• For H.264 exports only: Disable hardware-accelerated encoding.