....+ it still does not like some of the Audio/Video combos from the original broadcast!!!
Just on that topic, I found the recorded movie (Valkyrie) I mentioned earlier that would not remux with audio for me. It was recorded on March 9th, 2016 from Channel 76 7flix, when that channel was still in its earliest incarnation, and was broadcasting some weird formats. From memory back then it was supposed to be HD, but this movie is 720x576 25fps PAL AVC with format profile Main@L3.1. It does have the aforementioned AAC LATM 2 channel audio, which is shown in the MC [Compression] tag as an "audio: unknown codec". MC says the video is h.264, which is strange for a 720x576 video I would have thought. Using my remux method resulted in a TS file with no audio. Using your method errors out, but I can't see the messages displayed in the console, so I don't know what is going wrong. I assume it is the same as you reported for the Racing channel above, 'There is no common media type between these pins'.
I still have the original channel information in MC, and it shows that it was supposed to be AVC1/H.264 Video, AAC LATM Audio, as was the now defunct "74 TV4ME" and the still running "78 Racing.com", which is now broadcasting the weird format of 640x576 interlaced (I think, padded on the sides to 720x576 maybe, to produce a 16:9 display), 25fps, AVC Main@L3.0, AAC LATM, according to MediaInfo, unknown video codec and unknown audio codec in MC.
Anyway, that seems to have all been a failed experiment by Channel 7, and channel 76 has since been updated and is now broadcasting as "76 7flix Melbourne" with MPEG-1 audio and MPEG-2 video, so it is no longer a problem. I certainly don't care about the weird channel 78.
However, searching for "unknown codec" among my recordings still in JTV format I see the all the new HD channels (70 7HD Melbourne, 90 9HD Melbourne, 13 TEN HD) have broadcast some shows in 1920x1080 rather than the usual 1440x1080i format. At least some of the 1920x1080 recordings show video as unknown codec. There doesn't seem to be anything special about them. Below is the MediaInfo output for one example:
General
Complete name : \\WILMA\Recorded TV\NCIS_ New Orleans\NCIS_ New Orleans - S02E20 - Second Line\NCIS_ New Orleans - S02E20 - Second Line-0.jts.cnk
Format : AVC
Format/Info : Advanced Video Codec
File size : 176 MiB
Video
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Color range : Limited
Actually, it looks like maybe all those HD channels are now broadcasting everything in 1920x1080i format. Or at least everything I have recorded.
Searching my existing recordings for those channels I find that MC only recognises the video as h.264 for "Limitless" broadcast on "13 TEN HD", and no other recordings on TEN HD or other channels. Maybe my sample is small, but that seems a little strange. Particularly as reports the recordings to be identical, except for the GOP parameter being defined in Limitless.
General
Complete name : \\WILMA\Recorded TV\Limitless\Limitless - S01E21 - Finale (2)\Limitless - S01E21 - Finale (2)-3.jts.cnk
Format : AVC
Format/Info : Advanced Video Codec
File size : 176 MiB
Video
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Format settings, GOP : M=4, N=24
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Color range : Limited
A remuxed version of one of those recordings that originally showed as "Video: unknown codec" in MC is correctly identified as h.264 video in MC's [compression] tag. The remuxed version still doesn't have any GOP parameter, but it does have a new "Codec ID: 27" parameter. So I dunno what's going on there.
Are there any other combos you found?
I'm still looking, and ignoring all recordings with AAC LATM audio.