Nextcloud + S3 storage: MOV files have no thumbnails – looking for server-side MP4 conversion

💻 Development
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1

Hi,

I’m running Nextcloud with data stored in an S3-compatible bucket. Everything works fine, but .mov video files do not generate thumbnails, while .mp4 files work correctly.

Because of this, I’d like to convert MOV files to MP4 on the server side, ideally automatically, so thumbnails can be generated properly in Nextcloud.

I’m specifically looking for an admin-level, server-side solution (e.g. ffmpeg-based conversion, background job, or workflow integration), not a client-side workaround.

Has anyone implemented a reliable server-side MOV → MP4 conversion with S3-backed storage in Nextcloud?
Any best practices or recommended approaches?

Thanks in advance.

2

Did you try the Automated media conversion App (workflow_media_converter) ?

I can’t say whether this app works with the S3. It definitely doesn’t work when encryption is enabled.

h.t.h.

ernolf

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3

It Works! :slight_smile: Thank you!

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