Media Encoder exports all the videos in incorrect format

Hi ​@Generous_dayb089 

Thanks for stopping by the Premiere forums and reporting about this issue. It is a known issue that has recently been fixed. If you could try updating to v26.5, that should help your issue. However if not, please do let us know and update this post.

In the Program Monitor, is your Playback Resolution set to Full, ½, ¼, etc.?

Also, if you’re still having this issue, let us know the following: 

• Premiere Version: Find the exact version/build of Premiere you’re current using.
• Operating System: Specify Windows or macOS, along with the version.
• Mac Chip (Mac Only): Please let us know what M-series chip you have. If Intel please include GPU.
• GPU and Driver (Windows only): Please let us know your video card and driver version. We recommend updating to the most recent version; for NVIDIA users, we strongly recommend the Studio version of the driver.
• Media Files: video, images, etc. and what types (can check under Media Properties)
• Media Storage: Are your Scratch Disks set to your Documents folder or the same as project, and is this the same as the Media drive?

Also, if you could please let us know the following, this is also helpful to know:

• Does it affect all projects or only some? What about new, empty projects?
• Do you recall which Premiere this was last working in, and what might have changed? Any plugins, update to computer, etc.
• When did the problem first begin?

Appreciate it,
Katie