JVET-AQ0179 AHG9: Processing History Information SEI [C. Feldmann, T. Biatek, J. Boyce (Nokia), J. Pardo, T. Solovyev, E. Alshina (Huawei), X. Xu, S. Liu (Tencent)]
Chaired by S. Deshpande during 12:00-12:15 on 12 July 2026.
In a real-world streaming application, the recorded video traverses many steps, such as filtering, transcoding, resampling, …, before the final output bitstreams reach the end user. Keeping track of the individual steps or debugging problems in the entire processing chain poses a significant problem. With a full history of the processing, it would be possible to detect issues with the video quality early on and enable detection of errors in individual processing steps or the combination of processing steps.
In the -v3 version, we propose to combine with proposal JVET-AQ0139 in section 4.
Nesting SEIs example: is QM SEI or EOI SEI.
Comment: it is unclear what the decoder will do with this information and the design is complicated.
Showcase: JVET-AQ0139 has a showcase. Sees additional notes there.
It was asked if text description can provide history just textually. The SEI provides much more information that just text description.
Further study