Bug 487019

Summary: FFmpeg chapter export exports wrong TIMEBASE
Product: [Applications] kdenlive Reporter: tippfehlr <tippfehlr>
Component: Rendering & ExportAssignee: Jean-Baptiste Mardelle <jb>
Status: RESOLVED FIXED    
Severity: normal CC: tippfehlr
Priority: NOR    
Version First Reported In: 24.02.2   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: https://invent.kde.org/multimedia/kdenlive/-/commit/df6c63018c091f0a332645012aae06c64829490b Version Fixed/Implemented In:
Sentry Crash Report:

Description tippfehlr 2024-05-14 14:23:57 UTC 
SUMMARY
When exporting guides to FFmpeg chapters, the TIMEBASE option is swapped.
I get 25/1 instead of 1/25.
When applying this to a file with ffmpeg (`ffmpeg -i input.mp4 -i _chapters.txt -c copy -map_metadata 1 out.mp4`) the file gets super long.

STEPS TO REPRODUCE
1. create at least one guide/marker
2. right click on one marker -> export guides
3. select ffmpeg chapters

OBSERVED RESULT

;FFMETADATA1

[CHAPTER]
TIMEBASE=25/1
START=5
END=317
title=1

EXPECTED RESULT

;FFMETADATA1

[CHAPTER]
TIMEBASE=1/25
START=5
END=317
title=1

(see TIMEBASE)

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux
KDE Plasma Version: 6.0.4
KDE Frameworks Version: 6.1.0
Qt Version: 6.7.0
Comment 1 tippfehlr 2024-05-14 19:21:33 UTC 
Git commit a08ab55b59ec735f7ded0607287a17de47bc667f by Jonathan Grotelüschen.
Committed on 14/05/2024 at 18:04.
Pushed by mardelle into branch 'master'.

Fix wrong FFmpeg chapter export TIMEBASE

M  +1    -1    src/dialogs/exportguidesdialog.cpp

https://invent.kde.org/multimedia/kdenlive/-/commit/a08ab55b59ec735f7ded0607287a17de47bc667f
Comment 2 Jean-Baptiste Mardelle 2024-05-15 01:44:39 UTC 
Git commit df6c63018c091f0a332645012aae06c64829490b by Jean-Baptiste Mardelle, on behalf of Jonathan Grotelüschen.
Committed on 15/05/2024 at 01:44.
Pushed by mardelle into branch 'release/24.05'.

Fix wrong FFmpeg chapter export TIMEBASE

M  +1    -1    src/dialogs/exportguidesdialog.cpp

https://invent.kde.org/multimedia/kdenlive/-/commit/df6c63018c091f0a332645012aae06c64829490b