Using variable refresh rate to seamlessly adapt to arbitrary and variable video frame rates

A computer-implemented method comprising:

• receiving, by a media player, a video encoded at a fixed frame rate that is a first proper subset of a single media file;
• decoding the encoded video into a rendered video at the fixed frame rate with a video decoder of the media player;
• setting a display interface, that is to output the rendered video to a display, to a variable refresh rate mode that synchronizes a refresh rate of the display to a varying frame rate of rendered frames;
• sending the rendered video at the fixed frame rate from the media player to the display interface;
• sending the rendered video from the display interface to the display at the fixed frame rate when the display interface is in the variable refresh rate mode;
• receiving, by the media player, a second video encoded at a different second fixed frame rate that is a second proper subset of the single media file;
• decoding the encoded second video into a rendered second video at the different second fixed frame rate with the video decoder of the media player;
• sending the rendered second video at the different second fixed frame rate from the media player to the display interface;
• and
• sending the rendered second video from the display interface to the display at the different second fixed frame rate when the display interface is in the variable refresh rate mode.