Bug 435206 - Title clips become green and enlarged, see attachment.
Summary: Title clips become green and enlarged, see attachment.
Status: CONFIRMED
Alias: None
Product: kdenlive
Classification: Applications
Component: Video Display & Export (show other bugs)
Version: 20.12.3
Platform: Microsoft Windows Microsoft Windows
: NOR normal
Target Milestone: ---
Assignee: Jean-Baptiste Mardelle
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-04-01 04:21 UTC by Phuoc
Modified: 2021-11-01 14:53 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

Attachments
Project has been minimized. Parts might be missing. (738.56 KB, application/x-zip-compressed)
2021-04-01 04:21 UTC, Phuoc 		Details
View All Add an attachment

Note You need to log in before you can comment on or make changes to this bug.
Description Phuoc 2021-04-01 04:21:17 UTC 
Created attachment 137219 [details]
Project has been minimized. Parts might be missing.

SUMMARY
Title clips become green and enlarged, see attachment greenTitle.mp4.
It's shown perfectly in preview. But it's messed up after render.

STEPS TO REPRODUCE
1. Open the attached project (which has been minimized for the purpose).
2. Verify in preview.
3. Run render (MP4 H264)
4. Verify the video.

OBSERVED RESULT
See attached greenTitle.mp4

EXPECTED RESULT
As shown in preview.

SOFTWARE/OS VERSIONS
Windows: 10
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
Comment 1 Julius Künzel 2021-04-01 22:39:17 UTC 
Thanks for your report! I can confirm this with the attached file in 20.12.3
Comment 2 Veps 2021-11-01 14:53:26 UTC 
General speaking: I can confirm this issue!

SOFTWARE
KDEnlive: 21.08.2
OS: Windows 7
Renderer: h265/mp4 (hevc)

ADDITIONAL INFORMATION
Though I have the exact same issue in my project however I cannot reproduce it with this project file of the reporter *Phuoc*. (Not with h264 nor with h265 which I use for my project.)

However I think the problem is the temporal overlap of at least two titles on two tracks maybe related to a partial fade in/out on the overlapping portion of the titles. Apparently there is more to the story otherwise I would be able to reproduce it BUT the overlap is clealy the primary cause since removing the overlap works around the problem.