The frame_analyzer which is used by compare_videos.py needs to handle
barcode errors. As before the reference and the test video can contain
repeated frames. When there are barcode decode errors in the test video,
then we should not let that contribute to the skipped frames score. When
there are barcode decode errors in the reference video, then we need to
take proper care to still calculate skipped barcodes when the
corresponding frames are not present in the test video and the test
video does not have a frame with a barcode decode error that could have
been the same frame as the one in the reference.
A new metric total number of skipped frames and for number of decode
errors is introduced. Barcodes that appears in the test video, but not
in the reference video are also listed.
BUG=webrtc:6967
Review-Url: https://codereview.webrtc.org/2666333003
Cr-Commit-Position: refs/heads/master@{#16638}
7cebe78332