Guest

Preview Tool

Cisco Bug: CSCum83888 - MPEG2 aspect_ratio_info set to DAR instead of SAR when HD square pxls

Last Modified

Jun 21, 2020

Products (1)

  • Digital Receivers/Decoders

Known Affected Releases

1.0 T1.10B9 platinum_baseline silver-baseline

Description (partial)

Symptom:
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 D9859 uses the first approach. However, this approach has issues on legacy set-top boxes.

Conditions:
When transcoding a HD service to MPEG-2.
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.