Bug 442276 - Chroma key does nothing
Summary: Chroma key does nothing
Status: RESOLVED WORKSFORME
Alias: None
Product: kdenlive
Classification: Applications
Component: Video Effects & Transitions (show other bugs)
Version: 21.08.0
Platform: Microsoft Windows Microsoft Windows
: NOR normal
Target Milestone: ---
Assignee: Vincent PINON
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-09-10 19:07 UTC by gmike.travis
Modified: 2021-10-25 04:35 UTC (History)
3 users (show)

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


Attachments
example video clip (2.78 MB, video/mp4)
2021-09-10 19:07 UTC, gmike.travis
Details
Video of chroma key issue (28 bytes, text/plain)
2021-09-21 12:21 UTC, Christ Dietrick
Details
Chroma_key.png (553.05 KB, image/png)
2021-09-25 08:13 UTC, emohr
Details

Note You need to log in before you can comment on or make changes to this bug.
Description gmike.travis 2021-09-10 19:07:37 UTC
Created attachment 141452 [details]
example video clip

SUMMARY


STEPS TO REPRODUCE
1. Add attached clip to timeline
2. Add another clip below the first clip
3. Add chroma key effect to first clip
4. Set chroma key's color key to the background, using the color select tool

OBSERVED RESULT
Background is not deleted from the first clip, it covers up the second clip entirely.

EXPECTED RESULT
Background colors should be removed from the first clip and the remaining parts should be overlaid on the second clip.

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

ADDITIONAL INFORMATION
Comment 1 Christ Dietrick 2021-09-21 12:21:17 UTC
Created attachment 141763 [details]
Video of chroma key issue

Adding video of chroma key issue
Comment 2 Julius Künzel 2021-09-24 23:50:16 UTC
Thanks for your report! Unfortunately I can't reproduce on Linux with the 21.08a Appimage. Can you please check if "Track compositing" is "High Quality" or "None"? To make everything work as expected you have to set it to "High Quality". Does that solve the problem?
Comment 3 emohr 2021-09-25 08:13:17 UTC
Created attachment 141896 [details]
Chroma_key.png

I tested with Kdenlive 21.08.1 (720p25 and 1080p50) and with your green VHS file. The color picker (Chroma key : Basic) takes the correct color away. Can you test with the Windows daily build https://binary-factory.kde.org/job/Kdenlive_Stable_mingw64/ to see if it's fixed in the meantime?
Comment 4 Bug Janitor Service 2021-10-10 04:35:50 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 5 Bug Janitor Service 2021-10-25 04:35:26 UTC
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!