Evaluating Video Encoding Quality¶

A technical checklist for assessing encoded video quality and its bitrate, latency, and visual trade-offs.

This English edition preserves the original commands, configuration fragments, and diagrams so the steps can be reproduced directly.

Reference diagram 1

Reference diagram 2

Reference diagram 3

Reference diagram 4

Reference diagram 5

Reference diagram 6

Reference diagram 7

Reference diagram 8

Reference diagram 9

Commands and configuration¶

VCmpTool.exe D:\21.Controller\vmaf\test\source.mp4 D:\21.Controller\vmaf\test\target2.mp4

#命令
ffmpeg -i video1 -i video2  -lavfi psnr="stats_file=psnr.log" -f null -

# 运行测试
ffmpeg -i source.mp4 -i target1.mp4 -lavfi psnr="stats_file=psnr.log" -f null -

# ffmpeg -i 支持视频流输入，比如
ffmpge -i rtsp://192.168.10.xx/stream1 xxxxx

# 命令
ffmpeg -i video1 -i video2  -lavfi ssim="stats_file=ssim.log" -f null -

# 运行测试
 fmpeg -i source.mp4 -i target1.mp4 -lavfi ssim="stats_file=ssim.log" -f null -

# 命令测试：
ffmpeg -i d:\21.Controller\vmaf\test\source.mp4 -i d:\21.Controller\vmaf\test\target1.mp4 -lavfi libvmaf="model_path=vmaf_v0.6.1.json:log_path=VMAF.txt" -report -f null -

Notes¶

Use these examples as a starting point and adjust versions, device names, codecs, and network addresses for the target platform.