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Super Video CD
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Super Video CD
Super Video CD (Super Video Compact Disc, abbreviated as SVCD) is a digital format for storing video on standard compact discs. SVCD was intended as a successor to Video CD and an alternative to DVD-Video, and falls somewhere between both in terms of technical capability and picture quality.
Similar to VCDs, SVCDs comply with the CD-i Bridge format, and are authored (or "burned") using the CD-ROM XA format. The first track is in CD-ROM XA Mode 2, Form 1, and contains metadata about the disc. The other tracks are in Mode 2, Form 2, and contain audio and video multiplexed in a MPEG program stream (MPEG-PS) container. This allows roughly 800 megabytes of data to be stored on one 80 minute CD (versus 700 megabytes when using Mode 1). One CD can hold up to 35 minutes of full quality SVCD-format video and audio.
The video encoding format was upgraded from MPEG-1 that VCD uses to MPEG-2, which is also used on DVD-Video, resulting in a higher picture quality at the same duration as VCD. However, the quality is lower than that of DVD-Video even though both SVCD and DVD-Video use MPEG-2, given that the bitrate has to be lowered to fit a movie of the same duration as a DVD, owing to the smaller storage capacity of CDs.
Because of its 480x480 resolution, SVCD picture quality is more than double that of VCD. On the downside, this increase in picture resolution sacrifices video length capacity by over 50%. Because of this, titles released on SVCD had to come on twice the number of discs.
Unlike other CD-based formats, such as China Video Disc and Video CD, Super Video CD video is incompatible with both the DVD-Video and Blu-ray standards due to a conflict in resolution. However, many DVD and Blu-ray players will play back SVCD resolution video from a DVD or Blu-ray disc anyway.
Interlaced video is supported for SVCD video. 23.976 frames per second video is supported by use of interlacing and 3:2 pulldown.
The combined audio and video bit rates should not exceed 2.7 Mbps. This data rate was chosen, in part, to ensure compatibility with slower and less expensive "2 × speed" CD drives.
As with most compact disc-based video formats, SVCD audio is incompatible with the DVD-Video standard due to the difference in frequency; DVDs require 48 kHz, whereas SVCDs use 44.1 kHz.
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Super Video CD
Super Video CD (Super Video Compact Disc, abbreviated as SVCD) is a digital format for storing video on standard compact discs. SVCD was intended as a successor to Video CD and an alternative to DVD-Video, and falls somewhere between both in terms of technical capability and picture quality.
Similar to VCDs, SVCDs comply with the CD-i Bridge format, and are authored (or "burned") using the CD-ROM XA format. The first track is in CD-ROM XA Mode 2, Form 1, and contains metadata about the disc. The other tracks are in Mode 2, Form 2, and contain audio and video multiplexed in a MPEG program stream (MPEG-PS) container. This allows roughly 800 megabytes of data to be stored on one 80 minute CD (versus 700 megabytes when using Mode 1). One CD can hold up to 35 minutes of full quality SVCD-format video and audio.
The video encoding format was upgraded from MPEG-1 that VCD uses to MPEG-2, which is also used on DVD-Video, resulting in a higher picture quality at the same duration as VCD. However, the quality is lower than that of DVD-Video even though both SVCD and DVD-Video use MPEG-2, given that the bitrate has to be lowered to fit a movie of the same duration as a DVD, owing to the smaller storage capacity of CDs.
Because of its 480x480 resolution, SVCD picture quality is more than double that of VCD. On the downside, this increase in picture resolution sacrifices video length capacity by over 50%. Because of this, titles released on SVCD had to come on twice the number of discs.
Unlike other CD-based formats, such as China Video Disc and Video CD, Super Video CD video is incompatible with both the DVD-Video and Blu-ray standards due to a conflict in resolution. However, many DVD and Blu-ray players will play back SVCD resolution video from a DVD or Blu-ray disc anyway.
Interlaced video is supported for SVCD video. 23.976 frames per second video is supported by use of interlacing and 3:2 pulldown.
The combined audio and video bit rates should not exceed 2.7 Mbps. This data rate was chosen, in part, to ensure compatibility with slower and less expensive "2 × speed" CD drives.
As with most compact disc-based video formats, SVCD audio is incompatible with the DVD-Video standard due to the difference in frequency; DVDs require 48 kHz, whereas SVCDs use 44.1 kHz.
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