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Cisco Bug: CSCul42945 - Incorrect aspect ratio on STBs after HD transcoding from AVC to MEPG-2

Last Modified

Jun 16, 2020

Products (1)

  • Cisco Digital Content Manager (DCM) Software

Known Affected Releases


Description (partial)

Some set-top boxes are not displaying a transcoded MPEG-2 stream in the correct aspect ratio. The displayed aspect ratio is 4:3 while the input aspect ratio was 16:9. In an MPEG-2 encoded stream, an HD stream with 16:9 aspect ratio can be coded in two different ways: Sample Aspect Ratio is equals to square pixels or Display Aspect Ratio equals to 16:9. The MFP uses the first approach. However, this approach has issues on legacy set-top boxes.

When transcoding a HD service from H.264/AVC to MPEG-2.
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