TerraMaster Forum

Bug Report: Emby Server on TerraMaster TOS - No Thumbnail Previews

Device: F2-425 Plus
TOS Version: 7.0.0777
Affected Apps: Emby

Core Issue
No thumbnail/preview images are generated for video files

How to Reproduce
1. Fresh install of Emby from TerraMaster App Store on TOS 7
2. Run ps aux | grep EmbyServer - observe missing -programdata value
3. Try to generate thumbnail for any video file
4. Check Emby logs for "output file not found" error and Data path: -ffdetect



Details. What I found (Sorry for the long text):

1.No thumbnail/preview images are generated for video files

When trying to generate thumbnails, Emby fails with: 2. Emby logs show incorrect Data path

In the Emby log (embyserver.txt), the Data path is shown as: Instead of the expected: 3.The wrapper script fails to set APP_DATA_DIR correctly

The file /Volume1/@apps/emby/emby-server/bin/emby-server contains: This command returns an empty string when executed by the emby user via the service script, causing -programdata to have no value.

Resulting broken command (-programdata has no value):
Expected command (-programdata /Volume1/Emby) : Because -programdata has no value, -ffdetect is misinterpreted as the data path, and thumbnails fail to generate.


Workaround
Added line to /Volume1/@apps/emby/emby-server/bin/emby-server after and it started to work


Please fix this. Thanks!

Had to update Storage Manager, unable to update File Manager, and unable to download the 7.0.0777 update! Any advice?

PIK wrote: ↑09 Jul 2026, 04:57 Had to update Storage Manager, unable to update File Manager, and unable to download the 7.0.0777 update! Any advice?

Please check if the NAS network connection is normal. You can see if there is a WAN connection in the desktop widget.

Hi, plz help me. I can't installed qbittorrent(( because he used to php 7.4. I try to install 7.4.33.12 php, but not success (
99% of them show up for 5 minutes and then it's no success.
tos 7.0.0777

Konstantin wrote: ↑09 Jul 2026, 09:15

You can try running the following command in the Terminal Tool on the TOS desktop to refresh the APT repository metadata:
After the command has completed, please return to App Center and reinstall PHP 7.4.

If the installation still fails after refreshing the APT repository, please contact our technical support team through the official website online chat and schedule a remote assistance session for further inspection:

https://salesiq.zohopublic.com/signatur ... 97d0be8892

Thank you for your cooperation.

nikk wrote: ↑09 Jul 2026, 03:40

Thank you for providing the detailed information and analysis.

We have reviewed the situation you reported. Based on the current information, the issue may be related to an abnormal data directory parameter retrieval in the Emby application startup script. This may cause Emby to fail to correctly obtain /Volume1/Emby as the data directory during startup, which affects video thumbnail generation.

The temporary modification method you provided can be used as a temporary workaround for now.

At the same time, we have recorded this issue and will further investigate the reason why ter_share_add is not correctly retrieving the shared folder path, so that it can be fixed through a future application update.

Once again, thank you for providing the detailed reproduction steps, log information, and temporary solution. This information is very helpful for locating and resolving the issue.

If you encounter any other issues in the future, please feel free to continue providing feedback.

Storagemanager stuck at 99% refuse to finnish updateing.

storage pool update bricked 2 nases.

chlor12 wrote: ↑08 Jul 2026, 20:07

You can download the TOS 7.0.777 upgrade package from the following page:
https://download3.terra-master.com/TOS% ... 291528.bz2

star wrote: ↑09 Jul 2026, 10:41

Please contact our online support team through the official website and schedule a remote session with our engineer for further inspection and assistance:
https://salesiq.zohopublic.com/signatur ... 97d0be8892