Incorrect MIME Type when reading file using “Read/Write Files from Disk” node

[mohamed3nan]

Hello,

After updating n8n version (1.122.4), the Read/Write Files from Disk node returns a different MIME type than in the previous versions.

In the previous version, an MP4 file written using the same node would later be read with the MIME type: video/mp4

After upgrading, reading the exact same MP4 file now returns: application/mp4

To Reproduce

1. Create a workflow that writes a .mp4 file using the Read/Write Files from Disk node.
2. Read the same .mp4 file using the same node.
3. Inspect the binary metadata returned.

Workflow to Reproduce:

Expected behavior

The node should preserve or correctly detect the MIME type and continue to return: video/mp4 instead of: application/mp4

Github Issue

Incorrect MIME Type when reading file using “Read/Write Files from Disk” node

This is still exists with n8n v 1.122.4

[Mookie_Lian]

I marked it as completed, so its routed to the internal team and they are investigating this issue. The team will follow up with the thread when they have an update.

[mohamed3nan]

It has been over a month with no update so far,

Could someone from the team please confirm whether this behavior is now intended or if it is a bug?!

This issue is affecting many users, as reported in github,

I can see the status is team-assigned, but there has been no update or response from the team..

[mohamed3nan]

Finally after about 2 months, someone fixed it

fix: Update mime-types to fixed version

thanks @Mookie_Lian for following at github