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 have yet to encounter a DVD player that will pay attention to > > the aspect ratio flags in a SVCD MPEG file. > > As I remember from some of my experiments my DVD player (Philips 724) > understands 16:9 SVCD (at least in NTSC) but plays it a bit strange - it > scales it so that the image doesn't have black bars at the top/bottom (or > have them very small), something like with 2x zoom - aspect rate looks > correct but left and right part of the image are lost :-(((
So I can consider myself lucky, as my DVD Player (Gradient D-400) understands 16:9 SVCDs and plays them correctly at my TV set, doing the letter boxing, like it does for 16:9 DVDs. And I already produce non standard SVCDs by using a video maximum bitrate higher than the allowed in the standard. > 16:9 can be better even if player doesn't understand it and will play as 4:3 - > if you can switch TV to 16:9 mode. In this case TV will use all available > video information to construct 16:9 image, will add black bars by itself - no > information will be lost. But AFAIK this doesn't work with all TV sets and > will require manual intervention. 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 original image and are not wasted in the black borders. That is why I think the quality should be better. Am I right? Regards. Romildo ------------------------------------------------------- The SF.Net email is sponsored by EclipseCon 2004 Premiere Conference on Open Tools Development and Integration See the breadth of Eclipse activity. February 3-5 in Anaheim, CA. http://www.eclipsecon.org/osdn _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
