The highest video resolution supported by the SLT-A37M is 1920 x 1080 pixels. That's over six times the video resolution of the most common video resolutions of 640 x 480 pixels. In addition, this Sony camera supports a video resolutions of 1440 x 1080 pixels. A video resolution of 1920 x 1080 pixels is equivalent to Full HD video. You will require a Full HD TV or better to appreciate this level of detail.
This camera's video resolution (1920 x 1080 pixels) is in fact the best supported video resolution amongst all comparable spec cameras that are a similar age to this camera.
The worst supported video resolution across comparable types of camera is 320 x 120 pixels.
What does "video resolutions" mean?