https://bugs.kde.org/show_bug.cgi?id=444064
Bug ID: 444064
Summary: ffmpegthumbs causes Dolphin to "hang" when viewing
properties / details of video file on network share
(CIFS/SMB)
Product: kdemultimedia
Version: unspecified
Platform: Manjaro
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: ffmpegthumbs
Assignee: unassigned-b...@kde.org
Reporter: windows2li...@zoho.com
Target Milestone: ---
VERSION INFO:
ffmpegthumbs: 21.08.2
Operating System: Manjaro Linux
KDE Plasma Version: 5.22.5
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.2
Kernel Version: 5.14.10-1-MANJARO (64-bit)
Graphics Platform: X11
Processors: 8 × 11th Gen Intel® Core™ i7-1165G7 @ 2.80GHz
Memory: 15.4 GiB of RAM
Graphics Processor: Mesa Intel Xe Graphics
---
All scenarios assume CIFS network share, SMB protocol version 3; mounted either
via manual mount, fstab, systemd unit, or Smb4K.
The following scenarios are *very likely* to make Dolphin "hang":
* Prerequisite: ffmpegthumbs is installed
* Prerequisite: Previews are enabled in Dolphin (video previews are enabled)
1. With Dolphin, browse to a CIFS network share
1a. Right-click a video file -> Properties
Result: Dolphin hangs for several seconds or more (unresponsive)
2. In Dolphin Browse to CIFS network share
2a. Enable the "Details" pane
2b. Click on a video file
Result: Dolphin hangs for several seconds or more (unresponsive)
---
The following scenarios will *NOT* make Dolphin hang:
3. Repeat any of the above, however, use a LOCAL folder (rather than a network
share)
4. Repeat any of the above, however, use a READ-ONLY mounted network share
("ro")
5. Repeat any of the above, however DISABLE "Video File" previews (or uninstall
ffmpegthumbs)
---
FURTHER NOTES:
This isn't 100% a consistent hang. Sometimes it will "just work", but I noticed
the majority of the time it hangs Dolphin.
Scenario #4 above is very peculiar. For some reason using the "ro" (read-only)
mount option on the CIFS network share alleviates the problem entirely!
In all the above scenarios, video thumbnails generate properly. The hang only
occurs when trying to view the file's properties (either via right-click ->
Properties, or by enabling the Details pane and clicking on the file.)
---
I am going to prepare a video capture to show exactly what happens.
Any more information needed? Let me know what would be most useful.
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