Re: [Mjpeg-users] Re: DVD Studio Pro and MjpegTools
Hi - On Fri, 15 Oct 2004, William Sherman wrote: 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. You're welcome. I was beginning to wonder if you'd seen the posting. It's a low volume mailing list so if you're in a hurry for a response you might want to switch to the non-digest form. 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 That would definitely have the bug - the playback using the Quicktime Player will look like a slide show (I think what's happening is that QT-Player is playing just the I frames and choking until it gets to the next I frame). 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 I have a theory about what that might be - nothing certain though... 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 Multiply that by 4 systems and 4 or 5 OSs and you get an idea what I spend my time doing :) Don't multiplex the files together! DVDSP wants the elementary 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 Oh, iDVD is braindead - I gave that one try and bought DVDSP. iDVD also doesn't offer compressed audio - LPCM only - and I couldn't see giving up 1.5Mb/s out of the bit budget for audio. 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 Hurrah! default opacity for highlight and select on the buttons seem to be entirely transparent, so I can't tell which will be selected when Oh, you need to get another chapter or two into the tutorial for that :-) 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. I'm also thinking of getting one of those. There is a chance the broadcast flag will be negated but I'm not too hopeful about that. BUT if you're receiving HDTV signals OTA (Over The Air) then you could do what I've had success with: Get a HDTV receiver with IEEE1394 ports and use your Powerbook to do the recording. I use a Samsung T-165 and the DVHS app that comes with the Firewire SDK 19 from: http://developer.apple.com/sdk/ Firewire SDK 19 for Mac OS X Then to demux (AND correct for damaged/lost packets - and Transport Streams do have both types of problems!) use Project X: Project X http://www.lucike.info/index.htm?http://www.lucike.info/page_projectx.htm From that you get the .m2v and .ac3 files. Now of course you can't put HD content on a DVD (1920x1080i or 1280x720p is a more than a little out of the restricted MPEG-2 profile that DVDs use ;)). That's where the little sci Right, I guess I was used to what dvdauthor expects, and figured other DVD authoring tools would want the same. Actually I've thought, for a while now, that dvdauthor should accept elementary strings and use the 'libmplex2' routines to do the muxing as it builds the VOB files - that's how the other authoring programs I've seen work (Adobe's, Apple's, etc). 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). Well, if it's a TS (transport stream) are you using demuxing tools that know how to deal with error/damaged or missing TS packets? If not I think you could end up with discontinuities or similar problems and that could cause QT-Player and/or settop boxes to stutter or other playback problems. So avidemux2 serves also as how I write out separate mpeg-2 video and mpeg layer 2 audio. I use Project X for demuxing and then do minor trim operations within DVDSP. 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 Even if you could get that the volume of data would be huge (full frame (640x480) YUV 4:2:0 data comes out to about 42GB/hr) and you'd have to encode it to MPEG-2. Not worth the trouble ;) A.Pack is an apple thing right, I did get a warning message about Uh, yes - it is the Dolby certified/licensed AC3 encoder that comes WITH
[Mjpeg-users] Re: DVD Studio Pro and MjpegTools
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
