Hello. I've got v8.2.1.3
recently i ran into the following: some part of video file missed during playback.
1) Loop mode: Cut to black, Codec: Hap Alpha, black matte instead of last 1 sec(approx)
2) Loop mode: loop, Codec: Hap/apple_mjpeg, in most cases black matte instead of first 1 sec.
iMac 309, HD 6750M
Converted to h264, played normally.