Bug 435710

Summary:	Repeatable crash bug on render (with logs)
Product:	[Applications] kdenlive	Reporter:	postaccount
Component:	Rendering & Export	Assignee:	Jean-Baptiste Mardelle <jb>
Status:	RESOLVED WORKSFORME
Severity:	crash	CC:	julius.kuenzel, postaccount
Priority:	NOR
Version First Reported In:	20.12.3
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	Explanier for where the crash occurs

Description postaccount 2021-04-14 00:56:10 UTC

SUMMARY
Render bug keeps crashing and can't complete

STEPS TO REPRODUCE
1. Load project
2. Scrub etc, it works and plays fine until the end in the interface
3. Render and it crashes

OBSERVED RESULT
Crash

EXPECTED RESULT
Render

SOFTWARE/OS VERSIONS

kdenlive Version 20.12.3
OS: Pop!_OS 20.10 [linux version 5.11.0-7612-generic]


KDE Plasma Version: (not sure how to find)
KDE Frameworks Version: (not sure how to find)

Qt Version: 

Qt 5.14.2 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 10.2.0) on "xcb" 




ADDITIONAL INFORMATION

Here is the crash report:

Rendering of /home/username/Videos/outputfilename.webm crashed

No LADSPA plugins were found! Check your LADSPA_PATH environment variable.
[mp3 @ 0x55f890e60040] Estimating duration from bitrate, this may be inaccurate
[mp3 @ 0x55f890e62640] Estimating duration from bitrate, this may be inaccurate
[mp3 @ 0x55f8932e07c0] Estimating duration from bitrate, this may be inaccurate
[mp3 @ 0x55f8932ebbc0] Estimating duration from bitrate, this may be inaccurate
[mp3 @ 0x55f8938db140] Estimating duration from bitrate, this may be inaccurate
[mp3 @ 0x55f8938e19c0] Estimating duration from bitrate, this may be inaccurate
[mp3 @ 0x7fbba4be5f40] Estimating duration from bitrate, this may be inaccurate
[mp3 @ 0x7fbba4be9d40] Estimating duration from bitrate, this may be inaccurate
[webm @ 0x7fbbd42025c0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead. [webm @ 0x7fbbd42025c0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
[swscaler @ 0x7fbad5807980] Warning: data is not aligned! This can lead to a speed loss

I can't recall how I installed KDENLIVE but I THINK it was via apt-get install.
In fact, yes I believe this is true:

kdenlive-data/groovy,groovy,now 4:20.12.3-2~ubuntu20.10.1 all [installed,automatic]
kdenlive/groovy,now 4:20.12.3-2~ubuntu20.10.1 amd64 [installed]

Comment 1 Julius Künzel 2021-04-14 14:58:46 UTC

Thanks for your report! Can you please upload your project file or tell us which effects you use in the project?

Comment 2 postaccount 2021-04-14 22:58:57 UTC

Created attachment 137616 [details]
Explanier for where the crash occurs

Hi there, the project file is quite large.  9GB or so.
I can if the list of effects doesn't do anything, however I should note it keeps crashing at the one spot.  I'll include a screenshot and a list of effects for now.  Thank you

Effects used:
 - fade in
 - fade out
 - transform
 - speed increase in videos
 - manual change of frame rate in some video settings

However, the only ones that seem to happen at crash point are:
 - fade in
 - fade out
 - transform

Please see attached image for a helpful visual on where it happens.

Comment 3 postaccount 2021-04-14 22:59:11 UTC

Hi there, the project file is quite large.  9GB or so.
I can if the list of effects doesn't do anything, however I should note it keeps crashing at the one spot.  I'll include a screenshot and a list of effects for now.  Thank you

Effects used:
 - fade in
 - fade out
 - transform
 - speed increase in videos
 - manual change of frame rate in some video settings

However, the only ones that seem to happen at crash point are:
 - fade in
 - fade out
 - transform

Please see attached image for a helpful visual on where it happens.

Comment 4 postaccount 2021-04-14 23:41:41 UTC

(In reply to Julius Künzel from comment #1)
> Thanks for your report! Can you please upload your project file or tell us
> which effects you use in the project?

Just an update on this.  I removed the first of the 3 x images (as shown in previous screen shot), re-added it and re-applied the fade and transform.  It then rendered no problem. Maybe not worth spending your time on this as it could well be a strange one off thing?  I'm happy to have this closed if you are.  Thanks for all you do for the community.  Much respect.

Comment 5 Julius Künzel 2021-04-21 12:35:22 UTC

Thanks for your answer. Closing.