I use yuvpipe, and let an external program do it.. (ffmpeg / mencoder /
mpeg2enc)
... DV is actually a lossy compression so I personally think it's better
(and quicker) whilst YUV is lossless.. so I think it is better.
Matt Pfingsten wrote:
Unfortunately, that requires recompression. I'm trying to export to a
Quicktime DV (or directly to MPEG2 so I can mplex it and burn it to
DVD, but that doesn't work either). The problem that I am having is
that I have various clips that all claim to be Quicktime's ocompressed
with the DVC codec but each one is somehow how different.
However, when I go to export the video for Internet playback, I will
definately find your table to be most helpful. Thanks.
On 10/8/06, *Scott C. Frase * <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Matt,
I started creating a doc on QT compatibility by exporting video from
Cinelerra using different compression schemes with the QT container
format:
http://content.serveftp.net/video/qtcompatibility.ods.html
http://content.serveftp.net/video/qtcompatibility.ods (Open Office
Calc)
For now, I've found MPEG4/JPEG photo compression schemes most
compatible
among the major media players. Note that I've used twos complement as
my audio stream. You'll probably get even better results from MP3/4,
but I just haven't had time to test these.
hope this helps,
scott
On Sat, 2006-10-07 at 22:43 -0500, Matt Pfingsten wrote:
> A while back I was having issues importing QuickTime DV files
that had
> been captured on a Mac with Final Cut Pro. I learned that,
apparently,
> in spite of the fact that Cinelerra both claimed they were
compressed
> with the DV codec and were quicktime files, someohow the FCP
quicktime
> was different. Cinelerra, for whatever reason, wouldn't read all of
> the frames. Playback appeared choppy, but even when advancing a
frame
> at a time only evey fourth of fith frame would actually display. I
> figured that Apple, being the creators of Quicktime, had done
> something different to their Quicktimes that the Linux efforts
hadn't
> caught up to just yet. MPlayer/MEncoder could read it fine, so I
> managed to export it to an AVI DV, although Cinelerra proved
unable to
> play anything pass the first GB of data.
>
> Well, in the last few days I've learned more. It's not just FCP that
> creates "different" DV compressed Quicktimes. There appear to be
many
> different DV Quicktimes, each claiming to be the same thing but
> obviously different in some way. Here is a comparison between three
> different clips:
>
> 1) A file called fhmp_footage.mov. This first file is some footage
> captured in Final Cut Pro.
> -In Cinelerra, playback is choppy and only every fourth or fifth
frame
> is displayed.
> -In MPlayer it plays fine. "mplayer -identify fhmp_footage.mov"
yields
> this: (relevant portions only): ID_VIDEO_FORMAT=dvc, and later
> ID_VIDEO_CODEC=qdv
> -FFMpeg cannot play it, complaining "could not open codecs."
>
> 2) A file called 16A-1.mov. This is a clip I shot two weeks ago and
> captured using dvgrab.
> -Cinelerra plays it back fine. No issues.
> -In MPlayer it plays fine. "mplayer -identify 16A-1.mov" yields
this:
> (relevant portions only): ID_VIDEO_FORMAT=dvc, and later
> ID_VIDEO_CODEC=qdv
> -FFMpeg can play it. "ffmpeg -i 16A-1.mov" identifies the video as
> dvvideo. FFPlay plays it fine.
>
> 3) A file called titles_end.mov. This clip was created in Cinelerra
> from a bunch of PNG files. It is a one minute title sequence.
> -Cinelerra can play it back fine. No issues.
> -MPlayer/MEncoder have no problems. "mplayer -identify
titles_end.mov"
> yields this: (relevant portions only): ID_VIDEO_FORMAT=dvc, and
later
> ID_VIDEO_CODEC=qdv
> -FFMpeg can't play it, complaining "could not open codecs."
>
> Cinelerra identifies all three as DV Codec compressed Quicktimes. It
> should also be noted that Kino 0.9.1 can't open any of these files
> without complaining that the file isn't a DV file and wanting to
> import it via MEncoder. Kino 0.7.6 can open all of these files,
> although it takes about five minutes to open the first file
> (fhmp_footage.mov) probably because it is 13 GB.
>
> At the present time this is preventing me from burning my dailies or
> cuts to DVD which I could like to do before Tuesday. The biggest
issue
> is why Cinelerra is exporting Quicktimes that can't be read by
> others.
>
> I remember reading something in the archives about dvc, dvsd and
> multiple headers or something being written into one file. Of
course,
> two hours of searching has failed to produce this message now that I
> needed it.
>
> Anyone have any idea what is going on? What's different about these
> files? Why are they called the same thing? How can I fix them. Most
> important of all, how can I export a DV Quicktime out of Cinelerra
> that will work in something besides Cinelerra and MPlayer?
>
> --
> Matt Pfingsten
> www.GotWookiee.com <http://www.GotWookiee.com>
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Matt Pfingsten
www.GotWookiee.com <http://www.GotWookiee.com>
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