Re: HD capture question

Op dinsdag 30-03-2010 om 20:08 uur [tijdzone +0200], schreef Richard
Rasker:
> Op vrijdag 26-03-2010 om 16:04 uur [tijdzone -0700], schreef Dan
> Dennedy:
> > On Fri, Mar 26, 2010 at 8:04 AM, Richard Rasker <[email protected]> wrote:
> > > Op dinsdag 23-03-2010 om 18:00 uur [tijdzone -0500], schreef Daniel
> > > Jircik:
> > >> Kino does not support hdv. Try kdenlive which is based on the melt
> > >> library which plays just about anything. Kino is no longer developed.
> > >> Ciao
> > >> Daniel
> > >
> > > Hm, I tried rendering the .mov file to raw DV using Kdenlive, but I
> > > still get a rather choppy result -- even though Kdenlive didn't come up
> > > with any warnings or error messages. It isn't quite as bad a Kino's
> > > rendering, but it's unusable all the same.
> > 
> > Maybe you chose the wrong project setting.
> > 
> > > Is there perhaps a recent CLI tool for properly transcoding this H.264
> > > beastie to a more open format, so that I get to see exactly what's going
> > > on? Sorry if I sound terribly uninformed, but I have no experience with
> > > HD content whatsoever.
> > 
> > The following works beautifully with the sample you provided:
> > 
> > $ melt -profile dv_ntsc_wide file0034.mov -consumer
> > avformat:file0034.dv pix_fmt=yuv411p
> > 
> > Note the default profile is PAL DV, which does not match your input's
> > aspect ratio and frame rate, hence the dv_ntsc_wide. Then, ffmpeg
> > requires the pix_fmt hint to tell it which DV variant to use (dv25).
> 
> OK, thanks, this clarifies things -- and it turns out that Mandriva
> 2008.1 doesn't have the melt library, but it to work just fine on
> version 2010. At least I now have a point of departure for further
> endeavours in the realm of HD video :-)

Hello Dan, others,
I've played around a bit with melt and the CLI command which indeed
gives a great result for the .mov files recorded with this camera.

I still have one remaining question to which I can't find an (easy)
answer: how can I figure out which settings to use for a particular
video file? I guess all necessary information is found in the video
file's headers, but the question is how to extract it. Is there a
command to analyze an arbitrary video file, or at least retrieve and
display header information in a human-readable format? Is there perhaps
a Web page with some more in-depth information about this?

Thanks once again, best regards,

Richard Rasker


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