Patent ID: 8331439
Filing Date: 2012-12-11
Classification: H04L,H04N

Abstract:
1. Video data processing apparatus configured to process video data for downloading to mobile devices, in which the total data volume of an output file is limited, comprising: a coder for coding an input video clip of image frames to produce a first coded video data file having a predetermined data volume; and a processing device arranged to receive from said coder a measure of spatial data loss caused by said coding, to compare said obtained measure of data loss against a predetermined data loss value and if too much spatial loss has occurred, to remove frames from said input clip and to recode the input video clip to produce an output data file; wherein said re-coding step with even fewer frames is performed again until the degree of spatial loss has become acceptable; wherein the frame-rate is not allowed to drop below a predetermined minimum; and if too much spatial loss still occurs, audio quality is reduced.