Ciro Noronha of Cobalt Digital gives a presentation evaluating two options for transporting HDR over a communications link using compression. The first option is to simply run the HDR signal through a 10-bit capable encoder and transport the bitstream. The second option is to use SL-HDR1 to convert the HDR signal to SDR plus metadata, compress that signal, transport SDR plus metadata, and reconstruct the HDR on the receiving side. Given a desired quality level, the presentation evaluates the required bit rates in both cases. The technique used is the well-known BD-rate, and the objective quality measures are PSNR_DE100 and PSNR_L100. The evaluation is done over a number of sequences, both using AVC and HEVC. We found that, in most cases, there is a bit rate advantage to using SL-HDR1. This presentation is an update on the work presented at VidTrans 2020, using quality metrics that better correlate with perceived quality, and an industry-standard method (BD-rate) for the comparison.
Matthew Goldman, a well-known industry expert on video compression, provides commentary during this session.
This presentation was recorded on March 1, 2021 during the first virtual edition of VidTrans, an annual conference produced by the Video Services Forum (VSF).
