11.07.2022, 16:59
I'm actually not too sure anymore whether my videos are really Type-2 (one interleaved audio stream, one separate). I tried the tool dvdate (https://paulglagla.com/en/dvdate-2/), and it identified the file as Type-1. When I converted it to Type-2 using dvdate, it identifies like this:
Then I converted the Type-2 back to Type-1 using dvdate, and it looks like this:
Both files produced by dvdate work wonders using ffmpeg and Hybrid. I think in my video's case and Type-1 in general, the second audio stream is actually not a real audio stream, but just the timecode and metadata for the interleaved audio stream, and this is why extracting it while dropping the interleaved stream causes high pitched buzz and no sound. I suspect what Hybrid and ffmpeg need to do, and what VLC Player does, is use the metadata from the second stream and apply it on the content of the first/interleaved stream. Not sure how feasible this is, or whether it's worth the effort at all, since it sounds like a super edge case.
Input #0, avi, from '2005-08-14 14.19.26_type2.avi':
Duration: 00:00:52.04, start: 0.000000, bitrate: 30029 kb/s
Stream #0:0: Video: dvvideo (dvsd / 0x64737664), yuv420p, 720x576 [SAR 16:15 DAR 4:3], 28822 kb/s, 25 fps, 25 tbr, 25 tbn
Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 32000 Hz, 2 channels, s16, 1024 kb/sThen I converted the Type-2 back to Type-1 using dvdate, and it looks like this:
Input #0, avi, from '2005-08-14 14.19.26_type2_type1.avi':
Duration: 00:00:52.04, start: 0.000000, bitrate: 28890 kb/s
Stream #0:0: Video: dvvideo, yuv420p, 720x576 [SAR 16:15 DAR 4:3], 25000 kb/s, 25 fps, 25 tbr, 25 tbn
Stream #0:1: Audio: pcm_s16le, 32000 Hz, stereo, s16, 1024 kb/s
Stream #0:2: Audio: pcm_s16le, 32000 Hz, stereo, s16, 1024 kb/sBoth files produced by dvdate work wonders using ffmpeg and Hybrid. I think in my video's case and Type-1 in general, the second audio stream is actually not a real audio stream, but just the timecode and metadata for the interleaved audio stream, and this is why extracting it while dropping the interleaved stream causes high pitched buzz and no sound. I suspect what Hybrid and ffmpeg need to do, and what VLC Player does, is use the metadata from the second stream and apply it on the content of the first/interleaved stream. Not sure how feasible this is, or whether it's worth the effort at all, since it sounds like a super edge case.