Cannot upload video files to Jira

Issue Summary

It is not possible to upload mp4 files to Jira.

Only really small files seem to be working.

Environment

Jira Cloud

Steps to Reproduce

• Try attaching a video file to an issue by any method available:
  • Using the clip icon (attachment button);
  • Files and images button in the comment;
  • Drag and drop the file.

Expected Results

The file will be uploaded.

Actual Results

Jira fails to load the file:

Notes

Tested file formats:

• mp4;
• AVI.

Tested files size:

• 48mb
• 8mb

Workaround

None at the moment.