Why will one .m4v file add to iTunes and the other doesn't?

[MoodyM]

Both started as .m2ts files, both remuxed using iFlicks "iTunes Compatible" preset.

Ok, this video file adds fine:

***** Analyzed File Results *****

*** General Parameters ***
- Name:  Planet Earth.S01E01.m4v 
- Container:  M4V - QuickTime 
- Size:  6.61 GiB 
- Duration:  49mn 2s 
- Bitrate:  19.3 Mbps 

*** Video Track Parameters ***
- Format:  H.264/MPEG-4 AVC 
- Bitrate:  Max.: Undefined / Average: 17.2 Mbps / Min.: Undefined 
- Frame rate (fps):  Max.: --- / Average: 25.000 / Min.: --- 
- Encoding profile:  High@L4.1 
- Image size:  1920*1080 
- Pixel Aspect Ratio:  Undefined 
- Display Aspect Ratio:  16:9 
- Interlacing:  Progressive 

*** First Audio Track Parameters ***
- Format:  AAC - MPEG-4 audio 
- Bitrate:  165 Kbps 
- Resolution:  Undefined 
- Rate:  48.0 KHz 
- Channel(s):  2 (stereo) 
- Position:  Front: L R 

*** Miscellaneous ***
- Subtitle(s): #1 : Timed text - English / #2 : Apple text - English / 
- Album: Planet Earth, Season 1
- Performer: Planet Earth
- Genre: Documentary
- Encoded date: UTC 2013-08-18 12:56:12
- Album artist: Undefined

And this one won't add at all - it's not under Movies, it's not under TV shows, it's not under Home Movies:

***** Analyzed File Results *****

*** General Parameters ***
- Name:  Planet Earth.S01E02.Mountains-1.m4v 
- Container:  M4V - QuickTime 
- Size:  6.68 GiB 
- Duration:  57mn 55s 
- Bitrate:  16.5 Mbps 

*** Video Track Parameters ***
- Format:  H.264/MPEG-4 AVC 
- Bitrate:  Max.: 40.0 Mbps / Average: 19.5 Mbps / Min.: Undefined 
- Frame rate (fps):  Max.: Undefined / Average: 25.000 / Min.: Undefined 
- Encoding profile:  High@L4.0 
- Image size:  1440*1080 
- Pixel Aspect Ratio:  Undefined 
- Display Aspect Ratio:  16:9 
- Interlacing:  Undefined 

*** First Audio Track Parameters ***
- Format:  AAC - MPEG-4 audio 
- Bitrate:  137 Kbps 
- Resolution:  Undefined 
- Rate:  48.0 KHz 
- Channel(s):  2 (stereo) 
- Position:  Front: L R 

*** Miscellaneous ***
- Subtitle(s): No Subtitle
- Album: Planet Earth, Season 1
- Performer: Planet Earth
- Genre: Documentary
- Encoded date: UTC 2012-09-02 19:02:57
- Album artist: Undefined