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I thought the only method for encoding 5.1 surround sound on a S-VCD was with the MPEG Multichannel format? - Anon
I do not think that there is 5.1 surround sound on SVCD. SVCD was improvement on both image resolution and sound quality due to allowence of higher bitrate on mp2 (MPEG-1 Audio Layer-2). But mp2 do not support sound beyond stereo. 22:55, 18 March 2008
I have some doubts about the SVCD resolutions.
-- 200.208.45.2 14:40, 8 Mar 2005 (UTC)
I'm afraid I don't know the technical details of how TVs work, but I know the info in this article is correct because I've worked with SVCDs a lot. According to the NTSC article, the extra scanlines (up to 525) in NTSC are used for sync, vertical retrace, and stuff like closed-captioning, but only 480 lines of picture are actually used (which is in keeping with the 480-pixel height of SVCD and DVD). PAL has more scanlines, and thus more vertical resolution (576 for SVCD and DVD), but a lower screen refresh rate.
At any rate, your question about aspect ratio: a TV can have those funky resolutions simply because the "pixels" in a TV are not square. The image (regardless of how many pixels it has) is just stretched to fit 4:3 or 16:9 (usually by the DVD player, but sometimes by the TV). I don't think standard (non hi-def) TV screens have a defined horizontal resolution; it's just a question of how many pixels you want to stuff in there. VCD resolution is only 352 pixels wide, while full-width DVD resolution is 720 pixels - more than twice as wide (and the difference is noticeable). I suspect that for most non-HDTVs, more than 720 pixels of width would be wasted. I've often seen normal NTSC TVs classified as 640x480 (which happens to also give you square pixels at a 4:3 aspect, making it nice for video production om a computer; computer monitor resolutions usually have ~1:1 pixels).
I hope that helped answer your questions! -- Wapcaplet 15:42, 8 Mar 2005 (UTC)
I've made a first attempt at improving the narrative flow of the "Technical specifications" section. I brutally summarized a couple things; the Laserdisc comparison has been condensed to "...at a picture quality roughly comparable to Laserdisc."" The lengthy explanation of why MPEG Multichannel isn't practical was condensed to "...though space constraints and poor hardware support make it somewhat impractical." I removed the bit about why SVCD is tricky to convert to DVD (and how to hack around it), since I don't think it's relevant; I also removed the part about why DTS and Dolby Digital are unsupported. Comments welcome. -- Wapcaplet 16:02, 5 November 2005 (UTC)
Whether or not a SVCD plays well, or at all, on a DVD player depends on if the MPEG decoding hardware is designed to properly support the format. Many models of DVD player made by APEX fully support SVCD- even if they don't have the official logo. I've never seen any of the display problems mentioned in this article on any DVD player I've tried an SVCD in, where the disc would play. Other players just wouldn't recognize the disc. There can't be an incompatibility in *vertical* resolution because DVD and SVCD use the same number of lines. —Preceding unsigned comment added by Bizzybody ( talk • contribs) 06:25, 29 December 2007 (UTC)
Windows Movie Maker supports Standard Video CD format, but I am not quite sure if it supports the Super Video CD format. It could also depend on whever or not the computer is modern enouth or not to be able to compress files to the MPEG-2 format. About every computer there ever where can compress files to MPEG-1 format, in which case they can produce Standard Video CD's. Also Multie Region DVD players can play both Standard and Super Video CD formats. J2F Duck ( talk) 13:37, 8 March 2008 (UTC)
"Super Video Compact Disc - A Technical Explanation" document, which is an official document describing the standard from Philips says: "The Audio streams are selectable by the user, and VBR coding is used for a more efficient compression". However some of the users disagree. So I want to know on what official documents they are basing their statements that SVCD only supports CBR coding. —Preceding unsigned comment added by 89.161.12.238 ( talk) 19:22, 19 January 2008 (UTC)
I think that along with Super Video CD and China Video Disc, thses 3 articles should be merges as they are pretty much the same apart from the fact that they have differant resolutions on the screen, and differant compression files. Mergeing these 3 articles will be like uniteing a Hawker Hunter, it's Pilot and it's ground crew. J2F Duck ( talk) 16:18, 8 March 2008 (UTC)
c cv-- 117.196.135.186 ( talk) 09:13, 26 September 2010 (UTC)Italic text
In the Playback issues section, the article talks about "720p" as a genuine DVD resolution. However, 720p is an HD resolution that's not supported by DVD standards, only by BD standards. The highest resolution possible by DVD standards is progressive PAL at 720x576 aka 576p. -- 2003:71:4E6A:B437:C562:AC36:E469:3EFE ( talk) 10:01, 1 November 2016 (UTC)
![]() | This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||||||||||||
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I thought the only method for encoding 5.1 surround sound on a S-VCD was with the MPEG Multichannel format? - Anon
I do not think that there is 5.1 surround sound on SVCD. SVCD was improvement on both image resolution and sound quality due to allowence of higher bitrate on mp2 (MPEG-1 Audio Layer-2). But mp2 do not support sound beyond stereo. 22:55, 18 March 2008
I have some doubts about the SVCD resolutions.
-- 200.208.45.2 14:40, 8 Mar 2005 (UTC)
I'm afraid I don't know the technical details of how TVs work, but I know the info in this article is correct because I've worked with SVCDs a lot. According to the NTSC article, the extra scanlines (up to 525) in NTSC are used for sync, vertical retrace, and stuff like closed-captioning, but only 480 lines of picture are actually used (which is in keeping with the 480-pixel height of SVCD and DVD). PAL has more scanlines, and thus more vertical resolution (576 for SVCD and DVD), but a lower screen refresh rate.
At any rate, your question about aspect ratio: a TV can have those funky resolutions simply because the "pixels" in a TV are not square. The image (regardless of how many pixels it has) is just stretched to fit 4:3 or 16:9 (usually by the DVD player, but sometimes by the TV). I don't think standard (non hi-def) TV screens have a defined horizontal resolution; it's just a question of how many pixels you want to stuff in there. VCD resolution is only 352 pixels wide, while full-width DVD resolution is 720 pixels - more than twice as wide (and the difference is noticeable). I suspect that for most non-HDTVs, more than 720 pixels of width would be wasted. I've often seen normal NTSC TVs classified as 640x480 (which happens to also give you square pixels at a 4:3 aspect, making it nice for video production om a computer; computer monitor resolutions usually have ~1:1 pixels).
I hope that helped answer your questions! -- Wapcaplet 15:42, 8 Mar 2005 (UTC)
I've made a first attempt at improving the narrative flow of the "Technical specifications" section. I brutally summarized a couple things; the Laserdisc comparison has been condensed to "...at a picture quality roughly comparable to Laserdisc."" The lengthy explanation of why MPEG Multichannel isn't practical was condensed to "...though space constraints and poor hardware support make it somewhat impractical." I removed the bit about why SVCD is tricky to convert to DVD (and how to hack around it), since I don't think it's relevant; I also removed the part about why DTS and Dolby Digital are unsupported. Comments welcome. -- Wapcaplet 16:02, 5 November 2005 (UTC)
Whether or not a SVCD plays well, or at all, on a DVD player depends on if the MPEG decoding hardware is designed to properly support the format. Many models of DVD player made by APEX fully support SVCD- even if they don't have the official logo. I've never seen any of the display problems mentioned in this article on any DVD player I've tried an SVCD in, where the disc would play. Other players just wouldn't recognize the disc. There can't be an incompatibility in *vertical* resolution because DVD and SVCD use the same number of lines. —Preceding unsigned comment added by Bizzybody ( talk • contribs) 06:25, 29 December 2007 (UTC)
Windows Movie Maker supports Standard Video CD format, but I am not quite sure if it supports the Super Video CD format. It could also depend on whever or not the computer is modern enouth or not to be able to compress files to the MPEG-2 format. About every computer there ever where can compress files to MPEG-1 format, in which case they can produce Standard Video CD's. Also Multie Region DVD players can play both Standard and Super Video CD formats. J2F Duck ( talk) 13:37, 8 March 2008 (UTC)
"Super Video Compact Disc - A Technical Explanation" document, which is an official document describing the standard from Philips says: "The Audio streams are selectable by the user, and VBR coding is used for a more efficient compression". However some of the users disagree. So I want to know on what official documents they are basing their statements that SVCD only supports CBR coding. —Preceding unsigned comment added by 89.161.12.238 ( talk) 19:22, 19 January 2008 (UTC)
I think that along with Super Video CD and China Video Disc, thses 3 articles should be merges as they are pretty much the same apart from the fact that they have differant resolutions on the screen, and differant compression files. Mergeing these 3 articles will be like uniteing a Hawker Hunter, it's Pilot and it's ground crew. J2F Duck ( talk) 16:18, 8 March 2008 (UTC)
c cv-- 117.196.135.186 ( talk) 09:13, 26 September 2010 (UTC)Italic text
In the Playback issues section, the article talks about "720p" as a genuine DVD resolution. However, 720p is an HD resolution that's not supported by DVD standards, only by BD standards. The highest resolution possible by DVD standards is progressive PAL at 720x576 aka 576p. -- 2003:71:4E6A:B437:C562:AC36:E469:3EFE ( talk) 10:01, 1 November 2016 (UTC)