Bug 431269

Summary:	Audio from some input videos is very glitchy, originals are fine, fixed by importing the audio separately
Product:	[Applications] kdenlive	Reporter:	Darxus <darxus-kde>
Component:	Rendering & Export	Assignee:	Jean-Baptiste Mardelle <jb>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	julius.kuenzel
Priority:	NOR
Version First Reported In:	git-master
Target Milestone:	---
Platform:	Appimage
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Darxus 2021-01-07 16:30:40 UTC

I have reproduced this with the latest release (kdenlive-20.12.0-x86_64.appimage) and what was the latest daily yesterday (kdenlive-21.03.70-984f452-x86_64.appimage)

Some clips have really glitchy audio.  Additional noises that shouldn't be there, chunks of sound that might be backwards.  I can hear these problems both in the plaback in kdenlive, and the rendered output.  I tried deleting the clip entirely from the project, saving, exiting, reloading, then re-adding the clip, no change.  

I worked around it by extracting the audio with this command, and adding it separately, which worked fine:  ffmpeg -i *4519* -vn -acodec copy output-audio.aac

I'm attaching samples this is happening for.  An original that sounds fine through mpv, and the same thing just added to a kdenlive project and exported.  

An awful lot of the audio processed by kdenlive seem not quite right, this is just an example of where it is more noticable.  

The source is an LG G6, using the stock LG camera app.  mp4,
Selected audio codec: [ffaac] afm: ffmpeg (FFmpeg AAC (MPEG-2/MPEG-4 Audio))

Comment 1 Darxus 2021-01-07 16:46:05 UTC

Attachment limit is 4000 KB, with no instructions for providing larger examples.

https://www.chaosreigns.com/kdenlive/original.mp4
https://www.chaosreigns.com/kdenlive/glitchy.mp4

Comment 2 Julius Künzel 2024-08-08 21:31:02 UTC

Thanks for your report and sorry for the late reply!

We fixed some similar problems in the meanwhile, so please download the latest official version from https://kdenlive.org/download and try again.

Comment 3 Bug Janitor Service 2024-08-23 03:47:29 UTC

🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

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

Comment 4 Bug Janitor Service 2024-09-07 03:47:01 UTC

🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.