Re: [Mjpeg-users] PAL and NTSC image sizes [was: MJPEG encodingperformances]

2003-02-16 Thread Florin Andrei
On Wed, 2003-02-12 at 06:48, Martin Collins wrote: > On 11 Feb 2003 23:35:40 -0800 > Florin Andrei <[EMAIL PROTECTED]> wrote: > > > > That means you have to cut 8 pixels each from the left and the right > > margins before rescaling? > > That's odd, at least for someone who worked only with NTSC DV

Re: [Mjpeg-users] PAL and NTSC image sizes [was: MJPEG encodingperformances]

2003-02-13 Thread Martin Collins
On Thu, 13 Feb 2003 17:48:18 +0100 Bernhard Praschinger <[EMAIL PROTECTED]> wrote: > I thought of adding the description to the "Optimizing the stream" > Where I describe the problem. And the describe who yuvscaer can > help. And how y4mshift (aviable in the CVS) will help to center the > image.

Re: [Mjpeg-users] PAL and NTSC image sizes [was: MJPEG encodingperformances]

2003-02-13 Thread Bernhard Praschinger
Hallo > > Hmm... I have to cut 20 or so from the left and at least 4 from the > > right, depending on the channel, day and what I had for breakfast > Well, there's your problem right there. I always have the same thing > for breakfast. Somebody should put that in the howto. About what did you thin

Re: [Mjpeg-users] PAL and NTSC image sizes [was: MJPEG encodingperformances]

2003-02-12 Thread Florin Andrei
On Wed, 2003-02-12 at 07:51, Matto Marjanovic wrote: > > >> On 10 Feb 2003 20:40:29 -0800 > >> Florin Andrei <[EMAIL PROTECTED]> wrote: > >> > >What is the reason it is preferred to increase the size of the image > >(from 704 to 768)? The information remains the same after all > >(notwithst

Re: [Mjpeg-users] PAL and NTSC image sizes [was: MJPEG encodingperformances]

2003-02-12 Thread Martin Collins
On Wed, 12 Feb 2003 19:53:43 + Stephen Mollett <[EMAIL PROTECTED]> wrote: > Hmm... I have to cut 20 or so from the left and at least 4 from the > right, depending on the channel, day and what I had for breakfast Well, there's your problem right there. I always have the same thing for breakfas

Re: [Mjpeg-users] PAL and NTSC image sizes [was: MJPEG encodingperformances]

2003-02-12 Thread Bernhard Praschinger
Hallo > > > What is the same typical image rescale for PAL? > > > 720x576 --> ??? - is it 720x540? > > > > Of the 720 width line only 704 pixels have image info. PAL pixel > > aspect ratio is 59:54 so to get square pixels you scale 704x576 > > to 768x576. > > That means you have to cut 8 pixels e

Re: [Mjpeg-users] PAL and NTSC image sizes [was: MJPEG encodingperformances]

2003-02-12 Thread Matto Marjanovic
>On Tue, 2003-02-11 at 07:21, Martin Collins wrote: >> On 10 Feb 2003 20:40:29 -0800 >> Florin Andrei <[EMAIL PROTECTED]> wrote: >> >> > What is the same typical image rescale for PAL? >> > 720x576 --> ??? - is it 720x540? >> >> Of the 720 width line only 704 pixels have image info. PAL

Re: [Mjpeg-users] PAL and NTSC image sizes [was: MJPEG encodingperformances]

2003-02-12 Thread Martin Collins
On 11 Feb 2003 23:35:40 -0800 Florin Andrei <[EMAIL PROTECTED]> wrote: > > Of the 720 width line only 704 pixels have image info. PAL pixel > > aspect ratio is 59:54 so to get square pixels you scale 704x576 > > to 768x576. > > That means you have to cut 8 pixels each from the left and the right

Re: [Mjpeg-users] PAL and NTSC image sizes [was: MJPEG encodingperformances]

2003-02-11 Thread Florin Andrei
On Tue, 2003-02-11 at 07:21, Martin Collins wrote: > On 10 Feb 2003 20:40:29 -0800 > Florin Andrei <[EMAIL PROTECTED]> wrote: > > > What is the same typical image rescale for PAL? > > 720x576 --> ??? - is it 720x540? > > Of the 720 width line only 704 pixels have image info. PAL pixel > aspect ra

Re: [Mjpeg-users] PAL and NTSC image sizes [was: MJPEG encodingperformances]

2003-02-11 Thread Martin Collins
On 10 Feb 2003 20:40:29 -0800 Florin Andrei <[EMAIL PROTECTED]> wrote: > What is the same typical image rescale for PAL? > 720x576 --> ??? - is it 720x540? Of the 720 width line only 704 pixels have image info. PAL pixel aspect ratio is 59:54 so to get square pixels you scale 704x576 to 768x576.