A tool to measure audio/video synchronosation errors using special source video
- Play av_sync.mkv to one device's camera and microphone.
- Record video and audio from the other device into a file
- Feed that video into this tool (using an FFmpeg command line in it's CLI help message)
- Judge quality of audio and video by the number of recognized QR codes, audio chirps and discrepancy between timestamps encoded in the codes and chirps.
TODO: write a proper README.