https://bugs.kde.org/show_bug.cgi?id=368961
Bug ID: 368961
Summary: 16.08.1 MP4 Render Interface provides too low audio
encoding settings
Product: kdenlive
Version: 16.08.0
Platform: Archlinux Packages
OS: Linux
Status: UNCONFIRMED
Severity: wishlist
Priority: NOR
Component: Video Display & Export
Assignee: j...@kdenlive.org
Reporter: qubo...@gmail.com
Reducing video quality reduces file size, reducing audio quality reduces file
size.
However, reducing audio quality in relation to reducing video quality reduces
file size in an insignificant way:
A low quality video with high quality audio is generally much smaller than a
high quality video with low quality audio.
Kdenlive mp4/x264 offers 192kbps as the maximum audio bitrate.
Premiere Pro CC exporter for h.264 format has a medium profile at 192kbps and a
high profile at 320kbps (which is the maximum possible value in the exporter).
Youtube suggests 384kbps:
https://support.google.com/youtube/answer/1722171?hl=en
Kdenlive has 5 quality settings. I suggest they get changed from
audiobitrates="192,64" defaultaudiobitrate="160"
in kdenlive/data/profiles.xml in lines 10 (HD) and 27 (UHD) and 54 (audio only
AC3) to
audiobitrates="384,128" defaultaudiobitrate="256"
This is assuming that audiobitrates defines max and min and that all others get
calculated automatically.
Reproducible: Always
Taking a look at the render window in https://youtu.be/2knzVBOIDIM
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