A method of reducing a time to transfer first video frames output by a graphics processing unit according to a frame rate to a video capture device, the first video frames each having a plurality of visible image pixels to be displayed in a first display resolution, the method comprising: for each of the first video frames, inserting the first video frame into a source video frame, the source video frame having an active display region defining a displayable resolution greater than the first display resolution and having a same frame rate as the first video frames so that a rate of a pixel clock signal is greater for the source video frame than the first video frame, wherein said inserting the first video frame includes inserting the plurality of visible image pixels to be displayed in the first display resolution and a plurality of extra pixels into the active display region of the source video frame, wherein for a given video frame the rate of the pixel clock signal is dependent upon a total number of pixels in the given video frame and a frame rate for the given video frame; wherein the source video frame has a defined sequence of pixels for transfer and said inserting the first video frame includes inserting at least some of the plurality of extra pixels at a location after the plurality of visible image pixels in the sequence; forming an output video frame by adding a plurality of synchronization signals to the source video frame to indicate transitions between each pixel line of the source video frame and to indicate either an end of the plurality of visible image pixels in the source video frame or an end of the source video frame; transferring the output video frame via a video interface to the video capture device by sequentially transferring pixels of the output video frame according to the pixel clock signal for the source video frame; capturing the visible image pixels in the output video frame with the video capture device, while omitting the plurality of extra pixels from said capturing; and compressing the first video frame after the visible image pixels have been captured, beginning said compressing before the entire active display region of the output video frame has been transferred. for each of the first video frames, inserting the first video frame into a source video frame, the source video frame having an active display region defining a displayable resolution greater than the first display resolution and having a same frame rate as the first video frames so that a rate of a pixel clock signal is greater for the source video frame than the first video frame, wherein said inserting the first video frame includes inserting the plurality of visible image pixels to be displayed in the first display resolution and a plurality of extra pixels into the active display region of the source video frame, wherein for a given video frame the rate of the pixel clock signal is dependent upon a total number of pixels in the given video frame and a frame rate for the given video frame; wherein the source video frame has a defined sequence of pixels for transfer and said inserting the first video frame includes inserting at least some of the plurality of extra pixels at a location after the plurality of visible image pixels in the sequence; forming an output video frame by adding a plurality of synchronization signals to the source video frame to indicate transitions between each pixel line of the source video frame and to indicate either an end of the plurality of visible image pixels in the source video frame or an end of the source video frame; transferring the output video frame via a video interface to the video capture device by sequentially transferring pixels of the output video frame according to the pixel clock signal for the source video frame; capturing the visible image pixels in the output video frame with the video capture device, while omitting the plurality of extra pixels from said capturing; and compressing the first video frame after the visible image pixels have been captured, beginning said compressing before the entire active display region of the output video frame has been transferred.