On sre, 2006-05-03 at 11:24 +0930, Pierre Dumuid wrote:
> Hi All,
> Has anyone been able to re-capture DV from tape at exactly the same
> start and stop point?  
> I recall that "dvcont seek" doesn't actually work for the camera, but
> thought that it could be implemented in "dvcont ff / rewind / play"
> commands smartly.
> 
> I use cinelerra, and I would like to be able to capture from my DV
> tapes to a file such as myfile.mov, but also have a file such as
> myfile.mov_sinfo  than contains the start and end timecodes of the DV
> extraction. That way, when I am finished with the project, I could
> delete the file, myfile.mov (being gig's in size) and have only a few
> megs of project description files by which I can re-capture the source
> if further editing was needed. (Saves having multiple lots of 12 Gb of
> data stored on the HDD just to be able to re-edit a video kinda
> sucks!)
> 
> I don't have a DV camera handy, (need to borrow it from my brother)
> but I was thinking borrowing his camera and playing with the dvgrab
> source code to get it to "smartly" seek to a time before a given
> timecode, ignore frames until an exact timecode, then grab the
> frames. 
> 
> Has anyone else done this?
> 
> I was also considering it would be cool to modify kino into a "DV
> re-sourcing program".  The idea being that a database of "dv tapes" be
> made that contains the info of the start and end timecodes of sections
> captured on the tapes.  Then clips grabbed from these tapes could be
> referenced accordingly.  An mock-up xml description that somewhat
> demonstrates the idea is attached.
> 
> Just kicking ideas around.  Anyone else have view on this concept??

Both of these projects are very very interesting ... First one also
enables true off-line editing for minidv.

However for MiniDV i am not sure it will ever work reliably... Since
i've seen cameras that actually leave empty frames between shots and
similar...

Professional cameras however do continious timecoding without problem.
Also when you work in linear montage, you usually first "code" the tapes
you are editing to - which means that you just record the continious
timecode, so you you can edit that tape frame-accurately later ...

Bye
andraz


> Along a similar idea:
> I personally have modified vobview,
> (http://www.linuxmotors.com/vobview/) to rip a selection of video,
> saving the end position (the start position was forced to zero, since
> no-zero resulted in pts mismatch between audio & video) in a file,
> filename.vob_sinfo if anyone is interested in that.












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