A device to up-convert a motion video frame rate comprising: an analysis component to analyze a pair of temporally adjacent base frames of a base video stream, the base frames comprising a preceding base frame and a following base frame, and at least one motion vector associated with movement of an object between the preceding base frame and the following base frame to determine a degree of visual artifacts involving an edge of the object in an interpolated frame; the analysis component comprising a multiplicity detector to determine locations of pixels in each of the preceding and following base frames at which a multiplicity of use of a pixel color value in motion vectors determining a pixel color value of the interpolated frame is other than one; the analysis component comprising a comparison component to determine a respective first quantity of pixels (Qeh) in each of the preceding and following base frames by respectively counting the number of pixels in each frame which are both coinciding with an edge and having multiplicity of use of pixel color values equal to zero, to determine a respective second quantity of pixels (Qec) in each of the preceding and following base frames by respectively counting the number of pixels in each frame which are both coinciding with an edge and having multiplicity of use of pixel color values greater than one, to determine a first criterion value for the preceding base frame from a sum of the respective first quantity of pixels (Qeh) and the respective second quantity of pixels (Qec) of the preceding base frame, to determine a second criterion value for the following base frame from a sum of the respective first quantity and the respective second quantity of the following base frame, and to compare the greater of said first and second criterion values to a threshold; and a selection component to select the interpolated frame for insertion between the preceding base frame and the following base frame in up-converting a frame rate of the base video stream to generate an up-converted video stream based on the comparison. an analysis component to analyze a pair of temporally adjacent base frames of a base video stream, the base frames comprising a preceding base frame and a following base frame, and at least one motion vector associated with movement of an object between the preceding base frame and the following base frame to determine a degree of visual artifacts involving an edge of the object in an interpolated frame; the analysis component comprising a multiplicity detector to determine locations of pixels in each of the preceding and following base frames at which a multiplicity of use of a pixel color value in motion vectors determining a pixel color value of the interpolated frame is other than one; the analysis component comprising a comparison component to determine a respective first quantity of pixels (Qeh) in each of the preceding and following base frames by respectively counting the number of pixels in each frame which are both coinciding with an edge and having multiplicity of use of pixel color values equal to zero, to determine a respective second quantity of pixels (Qec) in each of the preceding and following base frames by respectively counting the number of pixels in each frame which are both coinciding with an edge and having multiplicity of use of pixel color values greater than one, to determine a first criterion value for the preceding base frame from a sum of the respective first quantity of pixels (Qeh) and the respective second quantity of pixels (Qec) of the preceding base frame, to determine a second criterion value for the following base frame from a sum of the respective first quantity and the respective second quantity of the following base frame, and to compare the greater of said first and second criterion values to a threshold; and a selection component to select the interpolated frame for insertion between the preceding base frame and the following base frame in up-converting a frame rate of the base video stream to generate an up-converted video stream based on the comparison.