When I play videos from Digikam 5.1.0, album view, They play just fine in the preview zone, but when I move on to a different item (next/previous image or video, or to a different album, etc.) the video remains on screen (although frozen on the last displayed frame) exactly in the very same position and doesn't disappear even if I alt-tab to a different application/window. It keeps covering the part of my screen until I close digikam. I guess it may be something of more general nature than precisely digikam-related, because I had a similar problem long time ago with one of video players, but now am experiencing it only with Digikam. Taking screenshots with the built-in system tool doesn't show these stuck video frames, even though they were still on my screen. Reproducible: Always Steps to Reproduce: 1. Launch digikam 2. Enter album view, choose an album with a video 3. Play the video 4. Press the key for next item (space) or previous item (backspace) Actual Results: The previewed item changes but the video frame still covers the part of the screen Expected Results: The item changes and the video frame disappears and no longer covers any part of the screen Mint 18, Cinnamon Digikam installed from: https://launchpad.net/~philip5/+archive/ubuntu/extra?field.series_filter=xenial Taking screenshots with the built-in system tool doesn't show these stuck video frames, even though they were still on my screen.
Created attachment 100542 [details] Video playing Video playing but the frame is not captured at all by the built-in system screenshot tool
Created attachment 100543 [details] Video frame after alt-tabbing, was visible but not on screenshot There was the stuck frame, covering a part of the screen even after I alt-tabbed to another window, but the screenshot tool didin't capture it. Any hint?
There may be a problem with your video driver. QtMultimedia used hardware overlay for displaying video frames, therefore not visible in the screenshot. Maik
Created attachment 100545 [details] Video playing (now visible) Because screenshots didn't capture the video frame at all, I took a photo of the screen. Now you can see the video playing. Yes, it was a very low resolution video so the frame is tiny, but it happens regardless of the size.
Created attachment 100546 [details] Video frame stuck on screen (now visible) Because screenshots didn't capture the video frame at all, I took a photo of the screen. Now you can see the video frame stuck on the screen even after moving on to a different view. The video is stuck on the last viewed frame. Yes, it was a very low resolution video so the frame is tiny, but it happens regardless of the size.
Created attachment 100547 [details] Video frame after alt-tabbing (now visible) Because screenshots didn't capture the video frame at all, I took a photo of the screen. Now you can see the video frame stuck on screen even after alt-tabbing to another window. Yes, it was a very low resolution video so the frame is tiny, but it happens regardless of the size.
(In reply to Maik Qualmann from comment #3) > There may be a problem with your video driver. QtMultimedia used hardware > overlay for displaying video frames, therefore not visible in the screenshot. > > Maik The card is Intel HD 530 with standard Ubuntu 16.4 / Mint 18 drivers. so it would be pretty strange if there was something wrong with them, yet it is obviously possible.
Fix: https://github.com/linuxenko/ubuntu-skylake-i915-video-fix