Sonar data is harder to compress with H.264/H.265 compared to optical RGB video; examples are shown below.
-------------------------------------------------800x1280---------------------------------------------------
-----------------------CRF = 23---------------------------
GoPro(RGB):
bitrate: 3.92 Mbps
--------------------------------------------------
Sonar:
bitrate: 11.14 Mbps


-------------------------CRF = 27-------------------------
GoPro(RGB):
bitrate: 1.76 Mbps
--------------------------------------------------
Sonar:
bitrate: 6.35 Mbps


-------------------------CRF = 30-------------------------
GoPro(RGB):
bitrate: 0.82 Mbps
--------------------------------------------------
Sonar:
bitrate: 2.89 Mbps
--------------------------------------------------



-------------------------------------------------1146*2048---------------------------------------------------
----------------------CRF = 23----------------------------
GoPro(RGB):
bitrate: 8.03 Mbps
--------------------------------------------------
Sonar:
bitrate: 24.09 Mbps



-------------------------CRF = 27-------------------------
GoPro(RGB):
bitrate: 5.06 Mbps
--------------------------------------------------
Sonar:
bitrate: 17.53 Mbps



-------------------------CRF = 30-------------------------
GoPro(RGB):
bitrate: 1.64 Mbps
--------------------------------------------------
Sonar:
bitrate: 5.86 Mbps
