https://bugs.kde.org/show_bug.cgi?id=407011
Bug ID: 407011
Summary: kdenlive 18.12.3 MP4/VOB rendering looses lip sync
after adding 2nd audio track
Product: kdenlive
Version: 18.12.3
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Effects & Transitions
Assignee: vpi...@kde.org
Reporter: p...@bieringer.de
Target Milestone: ---
SUMMARY
assembling a movie from a music band with following records
- A/V recorded with Panasonic Lumix
Stream #0:0[0x1011]: Video: h264 (High) (HDPR / 0x52504448),
yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn,
100 tbc
Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo,
fltp, 192 kb/s
- Audio recorded with Audacity (speed adjusted 99,97%, splitted and aligned per
song to compensate still existing drifts over time)
Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 2
channels, s16, 1536 kb/s
result is lip (or more problematic: drum) sync problems after rendering after
approx. 5 min visible
Lip sync is ok if I disable the extra audio track
SOFTWARE/OS VERSIONS
mlt-6.12.0-7.fc29.x86_64
kdenlive-18.12.3-3.fc29.x86_64
ADDITIONAL INFORMATION
Seen also in 19.04 (but I've downgraded again because of duration time display
bug on fade-out [audio+video])
Also tried with extra audio track extracted WAV from main movie, but didn't
help.
In project monitor, everything is still fine.
Any idea how to debug/trace this? Is this kdenlive or mlt related or any other
component?
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