Cisco Bug: CSCut22454 - VBV buffer underflows and missing frames in PPQ Statmuxed services
Dec 31, 2016
- Cisco Digital Content Manager (DCM) Software
Known Affected Releases
Symptom: When decoding the video produced by a PPQ statmuxed transcoder, the decoder cannot properly decode certain frames because they arrive too late or are absent from the video bitstream. Based on the types of the late/missing frames, the decoder will apply various error concealment techniques. The visual result will be repeated pictures or visual artifacts. This may take up to a GOP length (usually about half a second) until the correct image is restored. When analyzing the video produced by PPQ statmuxed transcoder, the bitstream analyzer will report VBV underflows and/or missing frames. Conditions: When the service is Statmuxed on an MFP in PPQ mode. The frequency with which this issue occurs is content-dependent. On most content it is never encountered.
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