[Mjpeg-users] Numerical stream conditioning

2005-03-20 Thread Steven M. Schultz
On the recently discussed topics of "blocks in dark scenes" and "does the encoder see things differently than the eye" I have something that might be of interest. I pulled up a still frame from a DV file that to the eye looks black. The encoder o

Re: [Mjpeg-users] Re: How to encode 352x288/240 as a DVD

2005-03-20 Thread Luca
Matti Haveri, on 20/03/2005 23:35 you wrote: >>> PAL/NTSC 352x288/240 is a valid DVD resolution but I'm unsure whether >>> I should encode it as MPEG1 or MPEG2. >> >> MPEG1 > You can use both, but MPEG-2 it's better since you can use DVD bitrate (up to 9800Kbits/s for video stream). MPEG-1 is onl

Re: [Mjpeg-users] Re: How to encode 352x288/240 as a DVD

2005-03-20 Thread Steven M. Schultz
On Mon, 21 Mar 2005, Matti Haveri wrote: > Things were clear for a few days but now I'm confused again ;) Yes, I think you managed to confuse yourself again :-) > But I then noticed that QuickTime Player couldn't show the image of > the VOB file or of the MPEG converted from it via MPE

[Mjpeg-users] Re: How to encode 352x288/240 as a DVD

2005-03-20 Thread Matti Haveri
PAL/NTSC 352x288/240 is a valid DVD resolution but I'm unsure whether I should encode it as MPEG1 or MPEG2. MPEG1 Things were clear for a few days but now I'm confused again ;) Encoding and authoring PAL 352x288 1875 kb/s CBR MPEG1 for a DVD seemed to work fine until I ripped the MPEG1 back for

Re: [Mjpeg-users] Numerical stream conditioning

2005-03-20 Thread Phil Bertram
On Mon, 21 Mar 2005 00:30, Dik Takken wrote: [snip] > Kommander GUIs that I'm working on: > > http://pingwing.xs4all.nl > > Cheers, > > Dik Dik, Your 'wizards' and coming 'wizards' look good. They look like they will contain the sort of stuff that novices like me can use to get into video. Espe

Re: [Mjpeg-users] Images, Interlacing and Flicker

2005-03-20 Thread Steven M. Schultz
On Sun, 20 Mar 2005, Dik Takken wrote: > > My experience has been to use no lines thinner than 4 pixels, preferably > > 6 pixel and to use a bold or semi-bold sans serif font. > > So that reduces the safely usable resolution down to 144 vertical PAL > pixels? I know I have seen plenty o

Re: [Mjpeg-users] Resurfacing error : broken JPEG format

2005-03-20 Thread Bernhard Praschinger
Hallo > I am trying to digitize a movie using quicktime with lavrec: > > lavrec -f q -i p -R l -a 16 -c 2 -g 768x576 -d 1 -q 80 -w movie.mov > > I canĀ“t get passed the error message "broken JPEG format" regardless the > version of the driver or the tools I use. Have you tried it without the -g

Re: [Mjpeg-users] Images, Interlacing and Flicker

2005-03-20 Thread Dik Takken
On Sat, 19 Mar 2005, Steven M. Schultz wrote: On Sat, 19 Mar 2005, Dik Takken wrote: I was wondering what experience you have with putting static images in DVD movies (like creating a slide show of digital photographs and text slides) and displaying them on a TV screen. My experience has been t

Re: [Mjpeg-users] Numerical stream conditioning

2005-03-20 Thread Dik Takken
On Sat, 19 Mar 2005, Steven Boswell II wrote: My scripts, and the ones you're generating, should end up as part of mjpegtools, part of some future GUI video-editing system, and as notes in our HOWTO. Maybe you should take a look at Kommander. With Kommander you can create GUIs to scripts and comma

Re: [Mjpeg-users] Numerical stream conditioning

2005-03-20 Thread Dik Takken
On Sat, 19 Mar 2005, Steven M. Schultz wrote: see the difference between 125 and 129 but we can see the difference between 16 and 20 I believe. That's because of the logarithmical response of the human eye. Maybe it would help if denoising tools and the encoder would also have the