https://bugs.kde.org/show_bug.cgi?id=411260
Bug ID: 411260
Summary: "f=mkv" or "f=matroska" produces MP4 file output
Product: kdenlive
Version: 19.08.0
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Video Display & Export
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
Previous kdenlive versions such as 18.12.2-beta would produce an MKV file if
you specified "f=mkv" in the render job properties. "mkv" and "matroska" are
both listed as valid formats by "melt -query formats". But when "f=mkv" is
supplied to 19.08.0, the render succeeds but the output file is in MP4 format.
STEPS TO REPRODUCE
1. Create a custom render format definition with parameters such as:
properties=x264-medium f=mkv vcodec=libx264 acodec=flac g=120 crf=9
global_quality=500 me_method=umh
In my testing, any valid set of parameters that specify "f=mkv" trigger the
bug.
2. Render all or part of the timeline.
OBSERVED RESULT
The output file has MP4 format according to tools like "ffprobe".
EXPECTED RESULT
The output file has Matroska (MKV) format.
SOFTWARE/OS VERSIONS
Windows: Windows 10 1903
KDE Frameworks Version: 5.61.0
Qt Version: 5.13.0
MLT Version: 6.16.0
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