The highest video resolution supported by the EOS 700D - Rebel T5i is 1920 x 1080 pixels. That's over six times the video resolution of a 640 x 480 pixels digital camera, which is the most frequently found video resolution supported by cameras that have been available for around the same time as this digital camera. 640 x 480 pixels is also supported by this digital camera. In addition, this camera supports a video resolutions of 1280 x 720 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 across all digital cameras of a similar age and spec to this camera.
The worst supported video resolution amongst similar types of camera is 320 x 240 pixels.
What does "video resolutions" mean?