AVS Chinese National Video Standard

AVS is Chinese national video standard, it is included in ffmpeg. To validate that you ffmpeg-tool supports AVS pls. run

ffmpeg -codecs | findstr xavs

...

DEV.L. cavs Chinese AVS (Audio Video Standard) (AVS1-P2, JiZhun profile) (encoders: libxavs )

Note: ffmpeg supports the profile JiZhun by default. 

 

Example of AVS encoding  [the bitrate 600 Kbps, the frame rate 60 fps, GOP size is 60, no b-frames (low-latency), motion estimation method – hex, single reference]:

ffmpeg  -video_size 384x320  -pixel_format yuv420p -i  battlefield_384x320.yuv -b:v 600k -refs 1 -bf 0 -g 60 -me_method hex -r 60 -vcodec libxavs  -y  battlefield_384x320.avs

 

Most of players do not recognize AVS elementary stream (i.e. without corresponding container), ffplay does recognizes:

ffplay -loglevel panic battlefield_384x320.avs

Note: the silent mode is necessary since false alarms are issued per frame.

 

Example: Encode with generating avi-container

ffmpeg  -video_size 384x320  -pixel_format yuv420p -i  battlefield_384x320.yuv -b:v 600k -refs 1 -bf 0 -g 60 -me_method hex -r 60 -vcodec libxavs  -y  battlefield_384x320.avi

Pot player plays AVS stream encapsulated to AVI container.

 

Papers:

“Overview of AVS-Video: tools, performance and complexity”,  Lu Yu**, Feng Yi, Jie Dong, Cixun Zhang