x265 compressione, different profiles, how it works?

[cellax]

Format : Matroska
Format version : Version 4 / Version 2
File size : 107 MiB
Overall bit rate : 3 346 kb/s
Movie name : broken
Encoded date : UTC 2014-04-15 19:18:33
Writing application : mkvmerge v6.8.0 ('Theme for Great Cities') 64bit
Writing library : libebml v1.3.0 + libmatroska v1.4.1

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Codec ID : V_MPEGH/ISO/HEVC
Duration : 5 min
Bit rate : 2 383 kb/s
Width : 1 920 pixels
Height : 800 pixels
Display aspect ratio : 2.40:1
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Bits/(Pixel*Frame) : 0.065
Title : Video H.265
Default : Yes
Forced : Yes

Format : Matroska
Format version : Version 4 / Version 2
File size : 102 MiB
Overall bit rate : 3 097 kb/s
Movie name : working
Encoded date : UTC 2014-02-18 18:01:55
Writing application : mkvmerge v6.7.0 ('Back to the Ground') 64bit built
Writing library : libebml v1.3.0 + libmatroska v1.4.1

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main@L4@Main
Codec ID : V_MPEGH/ISO/HEVC
Duration : 5 min
Bit rate : 2 139 kb/s
Width : 1 920 pixels
Height : 816 pixels
Display aspect ratio : 2.35:1
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Bits/(Pixel*Frame) : 0.057
Title : Video H.265
Language : Italian
Default : Yes
Forced : Yes

On my laptop I am able to view both but on my smart tv only one (DVB-T2 decoder), the second one.

How can I figure the difference between the two mkv?

Thx for your help

[sneaker_ger]

Don't shorten the MediaInfo logs. It could fail playing because of audio format differences for example.

As a first step download latest mkvtoolnix, extract hevc using mkvextract, then mux again using mkvmerge. Since these files are very old they might be broken beyond repair, though. In the early days of HEVC muxing things didn't always work.

[cellax]

the video track is undefined after extract (no extention), the audio works.

Maybe something went wrong on first muxing