Bug 813826
| Summary: | glitches when playing youtube movies | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Yonit Halperin <yhalperi> | |
| Component: | spice-server | Assignee: | Yonit Halperin <yhalperi> | |
| Status: | CLOSED ERRATA | QA Contact: | Desktop QE <desktop-qa-list> | |
| Severity: | high | Docs Contact: | ||
| Priority: | unspecified | |||
| Version: | 6.2 | CC: | acathrow, cfergeau, dblechte, djasa, dyasny, mkenneth, mkrcmari, tdosek | |
| Target Milestone: | rc | |||
| Target Release: | --- | |||
| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | ||||
| Fixed In Version: | spice-server-0.10.1-9.el6 | Doc Type: | Bug Fix | |
| Doc Text: |
Cause
When playing youtube html5 movies in google chrome, or moving the cursor over youtube flash movies, the display driver sometimes send to the spice server bitmaps that contain video frames, but are bigger than the previous frames sent.
Consequence
The bigger frames are not synchronized with the video stream, and their display time is independent of the display time of other frames. This appear to the user as glitches in the movie.
Fix
Attach such big bitmaps to the video stream they contain.
Result
Video playbacks that once suffered from glitches due to the above cause, should now be smooth, when the spice client runs with >= spice-gtk-0.11-9.el6
|
Story Points: | --- | |
| Clone Of: | ||||
| : | 815422 (view as bug list) | Environment: | ||
| Last Closed: | 2012-06-20 12:17:19 UTC | Type: | Bug | |
| Regression: | --- | Mount Type: | --- | |
| Documentation: | --- | CRM: | ||
| Verified Versions: | Category: | --- | ||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | ||
| Cloudforms Team: | --- | Target Upstream Version: | ||
| Embargoed: | ||||
| Bug Depends On: | 815422, 815426 | |||
| Bug Blocks: | 820669 | |||
|
Description
Yonit Halperin
2012-04-18 14:04:41 UTC
More details about reproducing the bug: google chrome: just play html5 movies on youtube. non full-screen and full-screen firefox/chrome/ie: playing flash movies and moving the cursor (non full-screen and full-screen).
Technical note added. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
New Contents:
Cause
When playing youtube html5 movies in google chrome, or moving the cursor over youtube flash movies, the display driver sometimes send to the spice server bitmaps that contain video frames, but are bigger than the previous frames sent.
Consequence
The bigger frames are not synchronized with the video stream, and their display time is independent of the display time of other frames. This appear to the user as glitches in the movie.
Fix
Attach such big bitmaps to the video stream they contain.
Result
Video playbacks that once suffered from glitches due to the above cause, should be smooth.
Technical note updated. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
Diffed Contents:
@@ -8,4 +8,4 @@
Attach such big bitmaps to the video stream they contain.
Result
-Video playbacks that once suffered from glitches due to the above cause, should be smooth.+Video playbacks that once suffered from glitches due to the above cause, should now be smooth, when the spice client runs with >= spice-gtk-0.11-9.el6
Back to assigned due to bug 820669 . It appears that libjpeg doesn't handle well changing the encoder's width and height, while libjpeg-turbo does (I tested it with libjpeg-turbo). Rhel6.3 doesn't ship libjpeg-turbo (bug 788687). The bug is not entirely gone. Reproducer is to play some full screen video in full HD guest connected to a client with full HD display, then you can see sometimes a glitch near the bottom of the screen.
I've hit a segfault too with spice-server-0.10.1-9.el6, see attachment 585438 [details] for backtrace.
(In reply to comment #9) > The bug is not entirely gone. Reproducer is to play some full screen video > in full HD guest connected to a client with full HD display, then you can > see sometimes a glitch near the bottom of the screen. > > I've hit a segfault too with spice-server-0.10.1-9.el6, see attachment > 585438 [details] for backtrace. Hi, I don't think that the glitch you see is referring to this bug. This bug is about the whole video going back and forth, mainly in google-chrome, in html5 movies. Which guest and browser have you tried? The segfault is https://bugzilla.redhat.com/show_bug.cgi?id=822686. (In reply to comment #10) > (In reply to comment #9) > > The bug is not entirely gone. Reproducer is to play some full screen video > > in full HD guest connected to a client with full HD display, then you can > > see sometimes a glitch near the bottom of the screen. > > > > I've hit a segfault too with spice-server-0.10.1-9.el6, see attachment > > 585438 [details] for backtrace. > Hi, > > I don't think that the glitch you see is referring to this bug. This bug is > about > the whole video going back and forth, mainly in google-chrome, in html5 > movies. > Which guest and browser have you tried? > I used Firefox in RHEL 6 with flash and in Fedora 17 with html5 (in KDE failsafe to get non-compositing WM environment). I've seen it in both, actually only it was not present FF/html5/gnome-shell. Weird thing is that I can not reproduce it today in exactly same environment. html5 videos in Chrome/el6 are rendered fine, without any glitches. > > The segfault is https://bugzilla.redhat.com/show_bug.cgi?id=822686. *** Bug 820669 has been marked as a duplicate of this bug. *** Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2012-0765.html |