Everything went as usual and then came the part of transoding by Handbrake. Handbrake could not detect the source. I thought I had made a mistake so I did it again. Same result. I did it the third time and it was still the same. The mkv file plays back perfectly OK using all programs availble for Mac or PC but would not transcode.
Then I realized that the playback was not stripped of the security key and that made all the transcoding program hiccup. PC or Mac had the same error.
