> From: "Steven M. Schultz" <[EMAIL PROTECTED]>
> Subject: Re: [Mjpeg-users] DVD Studio Pro and MjpegTools
Thanks for the response Steven. I'm on the digest, so it took me a
while to test things out and respond to your response.
> > I'm using a recent CVS version of mjpegtools (I got tired
> > of waiting for the followon to 1.6.2) -- 10/05/2004 to be
>
> Well, I have attempted to set the wheels in motion for a release but
> so far haven't heard too much back about getting a release cycle
> started.
Yeah I saw that -- thanks. Hopefully if it gets mentioned a few
more times it will happen.
> Great - that's what I was using last night - created a couple DVDs
> and started on the third one (then couldn't decide was style I wanted
> to use and put it off till another night ;)).
Okay, good to know that my version is a good one.
> > had much luck with any of the Apple software reading mpeg-2
> > files created with the mjpegtools.
>
> Hmmm, was this with the CVS version or before you upgraded from 1.6.2
> to the CVS version?
You know what, both. I forgot that my original movie I tested with was
from before upgrading (from the Canopus source). However, even one of the
movies I just made from the IVTV source plays fine for 10 minutes or so,
but then Quicktime gets jerky, and even when I stop and begin at the
beginning again it still has the jerky behavior. I have to quit Quicktime
to see smooth video again -- but only for 10 minutes.
> Oh - you bought the "Production Suite" also? Took me a few hours
> to install the ~24-30GB - now to start reading the manuals :-)
Yeah, I can't even recall now whether I did install everything. And I've
read the two intro chapters to DVD Studio Pro, and one or two of the
Chapters for Final Cut Pro. Right now I'm concentrating more on getting
my IVTV television captures to DVD, so I've put down FCP for now.
> > Unfotunately however, while QT-Pro would recognize and read the
> > files it is not able to handle them at a respectible rate --
> > after the first few moments of one file I created the frame
> > rate of displaying the video drops to between 2 and 7Hz.
>
> This is for just "playing"? You're not trying to encode - correct?
Just playing.
> When/how was the file generated? If it was generated using 1.6.2
> then you're likely getting hit by the DPME bug.
Okay, I'll reencode my first test case with the CVS mjpeg tools and
see what happens.
> > Whereas a version of mplayer that I downloaded for my Powerbook
> > plays the file just fine.
>
> I build my own MPlayer (and ffmpeg, etc) but yes, the "quartz" video
> module(s) in MPlayer do a good job.
I build my own of all that stuff on my Linux box, including kino, and
this format and that format -- it's an endless operation, getting all
the video codecs and players to work. And then when I upgrade the
distribution and kernel, it starts all over again. I was glad that when
I finally got around to recently installing xine after my upgrade from
RH8 to RH9 that it basically worked without a hitch. Of course, that
was built on the fact that I'd already down all the work for Mplayer
and Ogle.
> Ah - yep sounds like your workflow is similar to mine. All except
> for the last part. DON'T multiplex the files together! DVDSP wants
> the elementary file - the .m2v file!
Aha, well that explains it. Except, when I tried that with iDVD, it doesn't
like those files either -- and in it's (difficult to follow) tutorial the
example movie file does have both audio and video (a .mov quicktime file).
So, given that the tutorial didn't reallly teach me much, and I know you're
successfully using DSP I went ahead and tried that -- and I managed to
author and burn a DVD that works in my settop box! Of course, I'm not
necessarily sure I could recreate my actions at this point, and the
default opacity for highlight and select on the buttons seem to be
entirely transparent, so I can't tell which will be selected when
using the remote on the settop box. But I'm pretty happy.
I would say though that my workflow is only partially similar to
yours -- not counting the fact that you understand which filter
matrices and other options to use for different sources, whereas
I just search the mailing list archives for your name and hope
your advice at that moment matches what I'm trying to do.
> Identical to what I do - except for the mplex step. Nice to hear
> that the pgmtoy4m program is being used by folks other than myself!
> I do a similar recoding with the HDTV broadcasts I capture over the
> IEEE1394 bus with 'DVHS' (it's one of the demo/test apps in the
> Firewire SDK you can download).
I'm thinking of getting one of the PCHDTV broadcast HDTV reciever
cards before the copy-protection act takes effect. But, I'm too
busy with getting my basic NCSA material onto DVD.
> Don't mplex the files - leave them as elementary stream files.
Right, I guess I was used to what dvdauthor expects, and figured other
DVD authoring tools would want the same.
> > Oh, I use avidemux2 on the latter to trim the
> > beginning and end of the TV capture, and then save the files
> > as Audio and a separate Raw video stream.
>
> Oh you can do all the trimming, etc right in DVDSP - that's how I
> adjust the beginning and ends of a track.
Well, except that for IVTV source material, it's already in a program
stream (or maybe it's a transport stream, I don't know for sure).
So avidemux2 serves also as how I write out separate mpeg-2 video
and mpeg layer 2 audio.
Now, I think it's possible to get separate streams of YUV data and
even AC-3 audio from the IVTV drivers, but last time I tried that
I was unsuccessful -- though the drivers literally change on a
daily basis, so I could have just gotten one where that particular
feature wasn't working. It's Chris Kennedy's driver 100p for those
familiar with the IVTV effort. But, even if that's doable, I'd
then have to be concerned with any time differences bewteen when
the audio and video captures were initiated.
> You can use MPEG-1 Layer-II (.mp2) files in a DVD - but NOT Layer3
> (MP3). So if the PVR-350 is producing MP2 then you can use that as
> is. Otherwise I use 'mpg321' and 'sox' (if needed) to create a
> .wav file which can be fed into A.Pack for AC3 encoding.
A.Pack is an apple thing right, I did get a warning message about
the mp2 audio files that don't match the DVD spec when I did the
Build & Burn. But since most DVD players go beyond the spec to
cover this I wasn't worried -- at least not while I'm still
experimenting.
The audio caputre frequency is 48000Hz, so mpg321 works for converting
to appropriate .wav files.
> Import the .m2v and .ac3 files into DVDSP and away you go - it's been
> working great for me for over a year now.
Well, that is encouraging news, thanks for all your help -- which includes
more than just this mail to me, all your messages from the past have also
been helpful.
>
> I do the encoding on other systems with mpeg2enc because until
> recently the dual P4 and Athlon-MP systems are a lot faster than any
> notebook. With pipelines of filters involved a dual cpu system
> is a much better encoding system than a single cpu notebook. The dual
> G5 system (and of course 3 months after I got the 2GHz version they
> came out with the 2.5GHz model ;)) is even faster than the Athlon
> 2800MP (except for yuvdenoise - I really have to look at getting
> some Altivec assist in yuvdenoise)!
Yeah, it's a hard thing. And then, for Linux anyway, when you do manage to
buy at just the right moment and get the latest and greatest, you end up with
a system ahead of the distributions, and as with my brand new work workstation
with an ASUS K8N-E motherboard, FC-2 doesn't have the network drivers.
> Summary: use the .m2v and .mp2/.ac3 files without multiplexing.
>
> Good Luck!
>
> Cheers,
> Steven Schultz
Bill
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