Hilversum, 18 June 2021
Analysis of Essential Video Coding (EVC) Added To Zond 265
The New EVC Codec
MPEG-5 Essential Video Coding (EVC) is a new video compression standard proposed by Samsung, Huawei and Qualcomm. It has been developed with the following requirements in mind:
Two profiles (sets of coding tools) have been defined for EVC:
Performance: Similar quality to H.264, at ~31% lower bitrate.
Performance: Similar quality to HEVC Main 10, at ~26% lower bitrate.
EVC Support in Zond 265
Zond 265 is an in-depth viewer and analyzer of HEVC bitstreams. Version 5 now adds full support for EVC bitstreams.
Figure 1. Zond 265 main window with open EVC bitstream.
The software shows the frame sizes in a chart as shown below.
Figure 2. Frame size bar chart: red bars = I frames, green bars = B frames.
The Stream Stats window contains general statistics about the EVC bitstream file as a whole, such as bitrate, average frame size, resolution and number of frames. The Toolset info window shows which 'tools' (features) have been enabled for encoding the current bitstream. Finally, the Bitstream tab shows the NAL units in the bitstream file, and their parameters.
Figure 3. The different stream information and statistics windows in Zond 265.
EVC Analysis Features
Zond 265 supports the following analysis functions for EVC (in a similar way to HEVC):
Figure 4. Prediction partitions displayed on top of the decoded image.