Re: [Mjpeg-users] Encoding aspect ratio for SVCD

2004-01-19 Thread Trent Piepho
On Mon, 19 Jan 2004 [EMAIL PROTECTED] wrote: > > Some 4:3 TVs however, have a 16:9 enhanced mode. In this mode, they take the > > full vertical resolution signal and squish the scan lines into a 16:9 > > letterbox area. This will give you more quality than throwing away the > > resolution before

Re: [Mjpeg-users] Encoding aspect ratio for SVCD

2004-01-19 Thread scholnik
> Some 4:3 TVs however, have a 16:9 enhanced mode. In this mode, they take the > full vertical resolution signal and squish the scan lines into a 16:9 > letterbox area. This will give you more quality than throwing away the > resolution before you encode. Do such TVs have enough vertical pixels

Re: [Mjpeg-users] Encoding aspect ratio for SVCD

2004-01-19 Thread Trent Piepho
On Mon, 19 Jan 2004 [EMAIL PROTECTED] wrote: > If you only watch the movie on a 4:3 TV, then it is both a waste of > bits and a reduction in quality to encode the widescreen (anamorphic) > version. Most (all? certainly the cheap ones) DVD players convert > 16:9 material to 4:3 material by dropping

Re: [Mjpeg-users] Encoding aspect ratio for SVCD

2004-01-19 Thread scholnik
> That is what I thought. When encoding a widescreen movie with aspect ratio > 16:9, black borders are not needed to expand the video frame, as is needed > when encoding to a 4:3 aspect ratio. The aspect ratio will be preserved. > Therefore all the bits in the encoded video are used in the origina

Re: [Mjpeg-users] Encoding aspect ratio for SVCD

2004-01-19 Thread romildo
On Mon, Jan 19, 2004 at 01:14:50PM -0800, Steven M. Schultz wrote: > On Mon, 19 Jan 2004 [EMAIL PROTECTED] wrote: > > > I am in doubt about what aspect ratio to use > > when encoding SVCDs from a widescreen source. > > 4/3 > > > giving a better quality. When playing the > > SVCD at a norm

Re: [Mjpeg-users] Encoding aspect ratio for SVCD

2004-01-19 Thread romildo
On Mon, Jan 19, 2004 at 06:20:08PM -0400, Alexei Dets wrote: > Hi! > On Monday 19 January 2004 5:14 pm, Steven M. Schultz wrote: > > As Alexei mentioned (and I have observed the same thing) many DVD/VCD > > players do NOT perform the letterboxing function for SVCD/VCD. In > > fact I

Re: [Mjpeg-users] Encoding aspect ratio for SVCD

2004-01-19 Thread Alexei Dets
Hi! On Monday 19 January 2004 5:14 pm, Steven M. Schultz wrote: > As Alexei mentioned (and I have observed the same thing) many DVD/VCD > players do NOT perform the letterboxing function for SVCD/VCD. In > fact I have yet to encounter a DVD player that will pay attention to >

Re: [Mjpeg-users] Encoding aspect ratio for SVCD

2004-01-19 Thread Steven M. Schultz
On Mon, 19 Jan 2004 [EMAIL PROTECTED] wrote: > I am in doubt about what aspect ratio to use > when encoding SVCDs from a widescreen source. 4/3 > giving a better quality. When playing the > SVCD at a normal TV (aspect ratio 4:3), the > DVD player will add black borders to fit > the imag

Re: [Mjpeg-users] Encoding aspect ratio for SVCD

2004-01-19 Thread Alexei Dets
Hi! > Am I right expecting better quality results > with a 16:9 aspect ratio in the SVCD? Yes, except the fact that many DVD players doesn't correctly play 16:9 SVCDs :-( Alexei --- The SF.Net email is sponsored by EclipseCon 2004 Pr

[Mjpeg-users] Encoding aspect ratio for SVCD

2004-01-19 Thread romildo
Hello. I am in doubt about what aspect ratio to use when encoding SVCDs from a widescreen source. For instance, today I have encoded a movie from an AVI source with frame size 800x344 to SVCD with both aspect ratios 4:3 and 16:9. For the 16:9 aspect ratio the needed black border at the top and th