The decoded video data, returned on CAPTURE buffers, is not traced by default because it is not needed for the retrace function and it significantly increases the trace file's size. A trace file generated on one machine can be retraced on another machine as long as a stateless hardware decoder and its V4L2 driver are available. The stateless controls for VP9 and HEVC formats will also be traced and retraced, since they are part of the V4L2 uAPI, but more work is needed to write the decoded video data to yuv files.