Bug 452833

Summary:	[libvpx @0000000002bcb340] Transparency encoding with auto_alt_ref does not work Rotoscope render
Product:	[Applications] kdenlive	Reporter:	Ben <ridiculouslybensocial>
Component:	Video Effects & Transitions	Assignee:	Vincent PINON <vpinon>
Status:	RESOLVED WORKSFORME
Severity:	crash	CC:	fritzibaby
Priority:	NOR
Version First Reported In:	21.12.3
Target Milestone:	---
Platform:	Other
OS:	Microsoft Windows
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	from start to finish

Description Ben 2022-04-21 20:26:31 UTC

Created attachment 148288 [details]
from start to finish

SUMMARY

1. When first loading the project the bottom says "Check missing clips" No clips are missing. it does this for a long time
2. Once loaded, project seems fine with effects and all
3. Render results in crash and error message [libvpx @0000000002bcb340] Transparency encoding with auto_alt_ref does not work 

***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols.
See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***

STEPS TO REPRODUCE
1. rotoscope project
2. render as VP8, VP9, or any other alpha
3. hangs up on "wait" for a long time, fails, crashes

OBSERVED RESULT
crashes

EXPECTED RESULT
Render rotoscoped project with alpha background

SOFTWARE/OS VERSIONS
Windows: Windows 10 Home 21H1 19043.1645

KDE Plasma Version: I don't know
KDE Frameworks Version: I don't know
Qt Version: I don't know
KDE version I have showing is 21.12.3

ADDITIONAL INFORMATION
1. I've tried changing profiles.xml in "Data" per a tutorial. Won't work.
2. Prior to this, on an older version my rotoscope would crash just like BUG ID 434696
3. Update resolved crashes during rotoscope but not for render.

Comment 1 emohr 2023-10-01 16:07:36 UTC

I tried with a 1080p50 clip with a rotoscope effect and render it to VP8 and VP9. No crash. 
Please check with actual 23.08.1 version on the download page.

Comment 2 Bug Janitor Service 2023-10-16 03:45:45 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 3 Bug Janitor Service 2023-10-31 03:45:38 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!