With HEVC/H.265 video decoding the computational complexity is of interest for 1K (1080p) video streaming on mobile phones and set-top boxes and for 4K UHD resolution on smart TVs and PCs.
As a reference video for decoding/playback measurements the Bender foundation Ian Hubert film ‘Tears of Steel’ was chosen. The short film ‘Tears of Steel’ is publicly available in raw 4K video and H.265 (HM Reference Encoder) encoding with video resolutions of up to 4K. In addition, the film is also available in H.264 format. libde265 HEVC performance was timed on a standard PC using ‘timehevc’. The open source tool plays short film Tears Of Steel out of a Matroska media container (.mkv) and measures the libde265 HEVC frame rate and CPU usage.
libde265 HEVC video decoding performance
|Resolution||avg. fps||CPU usage|
|720p ||259 fps||37 %|
|1080p ||135 fps||42 %|
|4K ||31 fps||49 %|
According to divx, “The Tears of Steel streams were encoded with HM-11.0 Reference Encoder using the encoder_randomaccess_main.cfg with Sample Adaptive Offset (SAO) disabled and WaveFrontSynchro enabled.”.
Tears of Steel short film