Hello,
Is it possible for me to report as a bug Cinelerra-CV 2.2 desync issues
that I see on the timeline with sequences in DV or HDV 60i?
Demonstration viveo capture I made of the problem:
http://www.youtube.com/watch?v=Y72kpaIO2IY&list=FLh2m4XNEHyJxq_VPAOTbdUQ&index=1
How do I do to register this bug?
Pierre
I still have no solutions... but I made new tests with shooting in 50i
(PAL) DV and HDV (my camera can optionally operate 50i PAL in addition
to its normal mode 60i NTSC) and in this case I observed no mismatches
in Cinelerra, I can cut and insert the clips on the timeline as much
as I want without ever observe desynchronization ...
I also confirmed that the problem is also present in HDV 60i.
So it is clear 60i (NTSC) DV or HDV: Cinelerra does not maintain
synchronization after insertions moved clips on the timeline. But
Cinelerra does not show any problems in the case of sequences shot in
50i (PAL) DV or HDV. But just to complicate things still... in the
case of NTSC 60i... the problem is not systematic and some clips lose
their sync and others do not... but nothing seems to distinguish them,
they are from the same source and have been integrated to the timeline
in the same way... And yes the command "Align cursor on frames" (Align
to frame boundaries) has been selected.
Desynchronizations occur during displacement and insertion sequences
already present on the timeline. I use Cinelerra-CV 2.2 under Ubuntu
12.04 64bit (including all updates) and Gnome "Classic without effects."
I am a beginner in editing but a professional director in video.
For this project, I shot with my own camera (HVR-Z1U) in "DV" NTSC
29.97 frames/second, "16/9", 2x soundtracks 48kHz "lock mode". All my
shots were captured by dvgrab in "dv2" (.avi). dvgrap has
automatically segmented transfers for each camera startup. Frequently
(but not always), if I move a sequence already present on the timeline
to fit inside another sequence on the timeline, I find myself with
sync sound problems at the beginning of the sequence segment following
the insertion point. Thesedesynchronizations do not appear immediately
after insertion, they are visible and audible if I lengthens the
beginning of the sequence that follows the inserted segment. All this
explanation is a bit complex and difficult ... and it is best to watch
the demonstration viveo capture I made of the problem and placed on
the following link:
http://www.youtube.com/watch?v=Y72kpaIO2IY&list=FLh2m4XNEHyJxq_VPAOTbdUQ&index=1
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