Audio demux issue with DGDemux 1.0.0.62
Posted: Thu Aug 18, 2022 10:39 am
The disc in question is an Arrow BD ("The Initiation of Sarah"). The playlist has 3 streams (M2TS files). The first and last streams are 1 second long (black screen video), and the middle stream is the complete movie. The first (1 second) stream has no audio or subtitle tracks. The last (1 second) stream has audio and subtitle tracks.
If I demux with DGDemux 1.0.0.61, selecting "Skip first M2TS," and then mux using MKVToolNix, the resulting MKV plays fine (audio & video).
If I demux with DGDemux 1.0.0.62, selecting "Skip first M2TS," the audio files (1 DTS-HD MA and 1 AC-3) are very small and only a couple of seconds long. It seems like it might be skipping the middle (instead of the first) M2TS file, for the audio tracks only. The video and subtitle files generated are the same size between the 2 versions of DGDemux (I did not do a binary compare, but the files are the same size, unlike the audio files).
Separate issue (maybe I should create another topic): In both versions, the subtitles were not demuxed properly. In the demuxed SUP file, the start/stop times of the last caption, which was the (single) caption from the last M2TS file, were 00:01.043 - 00:01.960. If I demux that M2TS manually, it looks like the caption should be 00:00.042 - 00:00.959. So, DGDemux offset the caption by 1.001 seconds, but it should have been offset by the length of the middle M2TS file (~1:36:47.178).
If I demux with DGDemux 1.0.0.61, selecting "Skip first M2TS," and then mux using MKVToolNix, the resulting MKV plays fine (audio & video).
If I demux with DGDemux 1.0.0.62, selecting "Skip first M2TS," the audio files (1 DTS-HD MA and 1 AC-3) are very small and only a couple of seconds long. It seems like it might be skipping the middle (instead of the first) M2TS file, for the audio tracks only. The video and subtitle files generated are the same size between the 2 versions of DGDemux (I did not do a binary compare, but the files are the same size, unlike the audio files).
Separate issue (maybe I should create another topic): In both versions, the subtitles were not demuxed properly. In the demuxed SUP file, the start/stop times of the last caption, which was the (single) caption from the last M2TS file, were 00:01.043 - 00:01.960. If I demux that M2TS manually, it looks like the caption should be 00:00.042 - 00:00.959. So, DGDemux offset the caption by 1.001 seconds, but it should have been offset by the length of the middle M2TS file (~1:36:47.178).