Before revision: Technical details Sign Language Video tracks have no audible audio and are encoded in VP9 format with a maximum bit rate of 1 Mbps, in 480x640px resolution, and with a frame rate of 24 frames per second (even if the main film is a different frame rate).
After revision: Sign Language Video tracks have no audible audio and are encoded in VP9 format with a maximum bit rate of 1 Mbps, in 480x640px resolution, and with a frame rate of 24 frames per second (even if the main film is a different frame rate).