Re: [Mjpeg-users] jerky leaps on hardwareplayer
Hello, after a lot of testing the problem was solved by changing the capture card from a bt848 to a bt878. It seems that it is not possible to capture 25 frames with the bt848 (10 frames are no problem). Greatings Oliver On Mon, 25 Jul 2005, Oliver Seufer wrote: Hello, I just tried for the fourth time to convert a analog video to dvd. But everytime I have the same problem. I'm not sure if it's a problem with streamer or mjpeg tools. So maybe some one can help. That's what I have done: 1. streamer -t 67500 -s 720x576 -n pal -r 25 -o movie.yuv -f 4mpeg -F stereo -O movie.wav -R 48000 -p 5 -b 64 My first test was on a harddisc with ext3. The second one was with a striping softraid which can write about 100MB/sec. So the speed of the harddisc can not be the problem. 2. yuvdenoise -t2 -b 3,1,710,570 movie.yuv |mpeg2enc -q4 -f8 -b9000 -np -F3 -I1 -21 -41 -r16 -N1.0 -Khi-res -D10 -s -c -P -o movie.m2v The third test with -b8000 doesn't change anything. The end result was the same. 3. mp2enc -r 48000 -o movie.mpa movie.wav The fourth test was with a AC3 audio track, but still the same problem. 4. mplex -S 0 -f 8 -V movie.mpa movie.m2v -o movie.mpg 5. dvdauthor -o /temp/dvdwork/dvd/ movie.mpg 6. dvdauthor -T -o /temp/dvdwork/dvd/ Viewing the result in /temp/dvdwork/dvd/ with mplayer or xine works perfectly, but when I burn the result on a dvd and try to view it with a hardware dvd player the video has jerky leaps after ~20 minutes. Tone is OK the whole time. The leaps are only in millisecond range, but they appear every few seconds. I don't have any clue what the problem could be. Thanks in advance Oliver --- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477alloc_id=16492op=click ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users -- --- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477alloc_id=16492op=click ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] jerky leaps on hardwareplayer
Hallo I just tried for the fourth time to convert a analog video to dvd. But everytime I have the same problem. I'm not sure if it's a problem with streamer or mjpeg tools. So maybe some one can help. That's what I have done: 1. streamer -t 67500 -s 720x576 -n pal -r 25 -o movie.yuv -f 4mpeg -F stereo -O movie.wav -R 48000 -p 5 -b 64 Can you try once to record with streamer and generate a mjpeg encoded Quicktime movie. The command lookes like that: streamer -t 0:30 -s 352x240 -r 24 -o movie.mov -f mjpeg -F stereo Do not use AVI because the mjpegtools ca only handle AVI up to 2GB. And use the lav2yuv and lav2wav to generate th audio and video. 2. yuvdenoise -t2 -b 3,1,710,570 movie.yuv |mpeg2enc -q4 -f8 -b9000 -np -F3 -I1 -21 -41 -r16 -N1.0 -Khi-res -D10 -s -c -P -o movie.m2v The third test with -b8000 doesn't change anything. The end result was the same. Try to drop every option excep the -f 8, 3. mp2enc -r 48000 -o movie.mpa movie.wav That one should work well. 4. mplex -S 0 -f 8 -V movie.mpa movie.m2v -o movie.mpg 5. dvdauthor -o /temp/dvdwork/dvd/ movie.mpg 6. dvdauthor -T -o /temp/dvdwork/dvd/ Viewing the result in /temp/dvdwork/dvd/ with mplayer or xine works perfectly, but when I burn the result on a dvd and try to view it with a hardware dvd player the video has jerky leaps after ~20 minutes. Tone is OK the whole time. The leaps are only in millisecond range, but they appear every few seconds. I don't have any clue what the problem could be. If you mjpeg encoded MOV files you can cut the video with glav/lavplay, and encode the part after the 20 minutes. Create a disk of that part of the movie afterwards, to get a better feeling where the problem is. From your description that problem sounds like if the card would drop a frame or so. auf hoffentlich bald, Berni the Chaos of Woodquarter Email: [EMAIL PROTECTED] www: http://www.lysator.liu.se/~gz/bernhard --- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477alloc_id=16492op=click ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] jerky leaps on hardwareplayer
Hello, I just tried for the fourth time to convert a analog video to dvd. But everytime I have the same problem. I'm not sure if it's a problem with streamer or mjpeg tools. So maybe some one can help. That's what I have done: 1. streamer -t 67500 -s 720x576 -n pal -r 25 -o movie.yuv -f 4mpeg -F stereo -O movie.wav -R 48000 -p 5 -b 64 My first test was on a harddisc with ext3. The second one was with a striping softraid which can write about 100MB/sec. So the speed of the harddisc can not be the problem. 2. yuvdenoise -t2 -b 3,1,710,570 movie.yuv |mpeg2enc -q4 -f8 -b9000 -np -F3 -I1 -21 -41 -r16 -N1.0 -Khi-res -D10 -s -c -P -o movie.m2v The third test with -b8000 doesn't change anything. The end result was the same. 3. mp2enc -r 48000 -o movie.mpa movie.wav The fourth test was with a AC3 audio track, but still the same problem. 4. mplex -S 0 -f 8 -V movie.mpa movie.m2v -o movie.mpg 5. dvdauthor -o /temp/dvdwork/dvd/ movie.mpg 6. dvdauthor -T -o /temp/dvdwork/dvd/ Viewing the result in /temp/dvdwork/dvd/ with mplayer or xine works perfectly, but when I burn the result on a dvd and try to view it with a hardware dvd player the video has jerky leaps after ~20 minutes. Tone is OK the whole time. The leaps are only in millisecond range, but they appear every few seconds. I don't have any clue what the problem could be. Thanks in advance Oliver --- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477alloc_id=16492op=click ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] jerky leaps on hardwareplayer
On Mon, 25 Jul 2005, Oliver Seufer wrote: I just tried for the fourth time to convert a analog video to dvd. But everytime I have the same problem. I'm not sure if it's a problem with streamer or mjpeg tools. So maybe some one can help. I think there are more variables than those two (streamer or mjpeg) - and that makes it difficult to debug. There are at least: 1. acquisition (streamer) 2. mjpegtools 3. DVD player 4. dvdauthor 5. DVD media That's what I have done: 1. streamer -t 67500 -s 720x576 -n pal -r 25 -o movie.yuv -f 4mpeg -F stereo -O movie.wav -R 48000 -p 5 -b 64 What type of device are you using to do the capture? Is there other software (such as 'lavrec') that you could try? a striping softraid which can write about 100MB/sec. So the speed of the harddisc can not be the problem. The speed of the raid _can_ be the problem. One example would be what I have seen happen - as the array fills up the thruput can drop off (as the inner cylinders of the drives are used). I do not think, in this case, that the performance of the disk subsystem is causing the problem you're having with the DVD(s). 2. yuvdenoise -t2 -b 3,1,710,570 movie.yuv |mpeg2enc -q4 -f8 -b9000 -np -F3 -I1 -21 -41 -r16 -N1.0 -Khi-res -D10 -s -c -P -o movie.m2v Hmmm, a slightly older version of mjpegtools... yuvdenoise has changed its usage (-b is no longer recognized). I doubt that is the problem though. My preference would be to use -K tmpgenc and leave out the -N but that's just personal taste. 4. mplex -S 0 -f 8 -V movie.mpa movie.m2v -o movie.mpg For mpeg2 -V is the default ;) 5. dvdauthor -o /temp/dvdwork/dvd/ movie.mpg 6. dvdauthor -T -o /temp/dvdwork/dvd/ Viewing the result in /temp/dvdwork/dvd/ with mplayer or xine works perfectly, but when I burn the result on a dvd and try to view it with a hardware dvd player the video has jerky leaps after ~20 minutes. Tone is OK the whole time. The leaps are only in millisecond range, but they appear every few seconds. I don't have any clue what the problem could be. At what speed did you burn the DVD? High speed (8x or higher) can produce discs that some DVD players will have trouble reading reliably. I tend to do all burns at 4x even if the media is rated for higher speeds. Do mplayer or xine play the DVD without trouble? The other possibility is that there is some form of incompatibility between the brand of media being used and the DVD player. Can you try a different brand of media (and the RW is great for testing). Do you have access to another DVD player? Some players (i've never had any problems with Philips - seems they'll almost play a piece of paper ;)). dvdauthor could, I suppose, also the culprit. I think some more experimentation (elimination of the other possibilities) is needed. I haven't heard of mpeg2enc producing invalid streams in a very very long time. I routinely import .m2v files produced by mpeg2enc into DVD Studio Pro and the resulting discs have always played fine in several DVD players and computer DVD drives. Quite a few variables to deal with. Using DVD+/-RW media will save on the media budget :) Cheers, Steven Schultz --- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477alloc_id=16492op=click ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] jerky leaps on hardwareplayer
I realize this is a strange question...but if you eject the disk when it starts skipping, and let it cool for maybe 5 minutes, then insert the disk again and fast-forward to that part of the movie does it continue to skip at the exact same place, or does it play fine for a while again and then start skipping? The reason I ask is I have seen DVD media 'warp' a little after it has been in the player, specifically after I've applied a paper label to the disk. Evidentally paper labels make it such that the DVD can't dissipate heat quite as efficiently and can cause the disk to warp. I have a number of DVD disks that have a paper label on them and in one of my DVD players the heat build up causes it to warp just a bit. In fact, if I put the hot DVD upside down on a flat surface I can see that it has cupped...and can push down on the center. That is why now days I use the mini-CD labels to label my DVD's. They cover only about half the radius of the full DVD-sized labels so i t allows heat to dissipate quickly. And they're cheap...5 to a standard page :-) It probably isn't your problem, but I thought I'd mention it just in case... -- Ray --- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477alloc_id=16492op=click ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] jerky leaps on hardwareplayer
On Mon, 25 Jul 2005, Ray Cole wrote: I realize this is a strange question...but if you eject the disk when it starts skipping, and let it cool for maybe 5 minutes, then insert the disk again and fast-forward to that part of the movie does it continue to skip at the exact same place, or does it play fine for a while again and I don't know - I haven't had a DVD skip on me :) What I have had happen is a DVD player wear out or otherwise fail mechanically - it wouldn't reliably focus on the 2nd layer (most commercial DVDs seem to be dual layer). Solution was to pop $50 and get a newer DVD player ;) then start skipping? The reason I ask is I have seen DVD media 'warp' a little after it has been in the player, specifically after I've applied a paper label to the disk. Evidentally paper labels make it such that the AIIE - paper labels, as you're discovering, are a very bad idea. I'm surprised, to tell the truth, those kits are still on the market. DVD can't dissipate heat quite as efficiently and can cause the disk to warp. I have a number of DVD disks that have a paper label on them and in one of my DVD players the heat build up causes it to warp just a bit. In fact, if I put the hot DVD upside down on a flat surface I can see that it has cupped...and can push down on the center. Not just heat but balance and mechanical wear/tear. Paper is lightweight but it's not 0 and can cause the disc to be less than perfectly centered/weighted. More (offcentered) weight can can problems. I think it's less that the polycarbonate substrate is melting but rather is being pulled out of shape by the tension of the label. As the paper/adhesive heats up it exerts tension on the surface of the disc causing the the disc to 'warp'. That is why nowadays I use the mini-CD labels to label my DVD's. They cover Even better use a Sharpie Fine Point permanent marker. BEST of all use inkjet printable media. I've long since switched to using inkjet printable media and an Epson R300 (or R200) printer. There's little or no price premium for injket printable media - and the results look really good. Even if you don't use an inkjet printer the printable surface 1) doesn't warp, 2) works very well with marker pens if you'd rather write a handwritten note. only about half the radius of the full DVD-sized labels so it allows heat to dissipate quickly. And they're cheap...5 to a standard page :-) OR there's less paper/adhesive pulling on the surface of the media ;) It probably isn't your problem, but I thought I'd mention it just in case... Thanks - I agree it's probably not the problem. My hunch is that the media or burn was less than perfect. We'll see if more testing turns up some clues as to what is a likely candidate. Cheers, Steven Schultz --- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477alloc_id=16492op=click ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
