Re: [Mjpeg-users] MPEG-1 from synthetic images

2004-09-22 Thread Roman Shaposhnick
On Wed, Sep 22, 2004 at 04:04:02PM -0600, James Bigler wrote: > This was suspicious as the original source images are fine. I even did: > > convert nocrack.00{6,6,6,6,6,6,6,6,6,6}0.ppm nocrack.0* crack.0* > -thumbnail '640x512>' -bordercolor black -border 50 -gravity center > -crop 640x512+0+0

Re: [Mjpeg-users] MPEG-1 from synthetic images

2004-09-22 Thread Steven M. Schultz
On Wed, 22 Sep 2004, James Bigler wrote: > I couldn't think of another way to describe it. The image in the video > erroneously glitches. An example can be found in some temporary web Ah, not that I know what it means - I just never thought of it as "popping" ;) "Jerk" or "

Re: [Mjpeg-users] MPEG-1 from synthetic images

2004-09-22 Thread James Bigler
This was suspicious as the original source images are fine. I even did: convert nocrack.00{6,6,6,6,6,6,6,6,6,6}0.ppm nocrack.0* crack.0* -thumbnail '640x512>' -bordercolor black -border 50 -gravity center -crop 640x512+0+0 ppm:- | ppmtoy4m -F 25:1 -r -n 150 > frames.raw cat frames.raw | y4mtopp

Re: [Mjpeg-users] MPEG-1 from synthetic images

2004-09-22 Thread James Bigler
2. I don't like popping. I've noticed that depending on various parameters I've chosen for mpeg2enc I get intermittent popping. "popping" is not a term usually associated with video. When I have heard the word "popping" used it's been in the context of audio as in "clicks and pops" or "chir

Re: [Mjpeg-users] MPEG-1 from synthetic images

2004-09-22 Thread Steven M. Schultz
On Wed, 22 Sep 2004, James Bigler wrote: > 2. I don't like popping. I've noticed that depending on various > parameters I've chosen for mpeg2enc I get intermittent popping. "popping" is not a term usually associated with video. When I have heard the word "popping" used it's b

[Mjpeg-users] MPEG-1 from synthetic images

2004-09-22 Thread James Bigler
I have a series of computer generated images (i.e. not photographic) that I generated using time varying data, and I would like to create an MPEG-1 movie of the slices. I've played around with a lot of the parameters, and would like some help in getting the optimal set. I don't care about file

[Mjpeg-users] VHS/TV/DVD resolution - interesting reading

2004-09-22 Thread Steven M. Schultz
Hi - Here are a couple references for folks who want to read a little more about the real/effective resolution of TVs, DVDs, and so on. http://www.dvddemystified.com/dvdfaq.html#3.4.1 and http://members.aol.com/ajaynejr/vidres.htm Cheers,

Re: [Mjpeg-users] VCR capture

2004-09-22 Thread Bernhard Praschinger
Hallo > > > If you're in a 625line (usually "PAL") video country then VHS has > > > 576 active (vertical) lines in 2 fields just like TV and DVDs. > > > > > > VHS does lack resolution though since it effectively only has 200 > > > or so horizontal lines. > > I still have not found any reliable res

Re: [Mjpeg-users] miro DC30+ fails to do anything

2004-09-22 Thread Ronald S. Bultje
Hi, On Tue, 2004-09-21 at 08:15, Brett Johnson wrote: > Zoran drivers claim to be 0.9.5. Selected as modules. That should be good. Can you try what the FAQ tells you: decrease size (-d2, -d4), decrease quality (-q80, -q50, -q20 even)? If that doesn't work, please give some information on your ha

Re: [Mjpeg-users] VCR capture

2004-09-22 Thread Ronald S. Bultje
Hi Steven & all, On Mon, 2004-09-20 at 17:27, Steven M. Schultz wrote: > On Mon, 20 Sep 2004, Ronald S. Bultje wrote: > > You're comparing two different things, so it's not as easy as "is 2 > > smaller than 1"? VHS is interlaced, but only at half of the lines as > > your actual TV/cable display, i