[FLX90]

Thank you for the answers so far.

Originally Posted by hubblec4

What is tx3g? Could you share a sample with me?

I can only present you the meta information I get from a m4v-File. It is DRM-protected so I cannot extract the chapters:

Menu
ID                                       : 34
Codec ID                                 : tx3g
Duration                                 : 2 h 48 min
Title                                    : Core Media Text
Language                                 : German
Encoded date                             : UTC 2017-06-10 01:38:06
Tagged date                              : UTC 2017-06-10 01:39:07
Menu For                                 : 2,36,37,38,39
00:00:00.000                             : 2
00:09:33.000                             : 3
00:17:09.000                             : 4
00:24:58.000                             : 5
00:35:43.000                             : 6
00:42:15.000                             : 7
00:50:18.000                             : 8
00:54:46.000                             : 9
00:58:57.000                             : 10
01:06:12.000                             : 11
01:17:26.000                             : 12
01:25:30.000                             : 13
01:34:30.000                             : 14
01:46:13.000                             : 15
01:55:32.000                             : 16
02:02:12.000                             : 17
02:12:55.000                             : 18
02:20:52.000                             : 19
02:35:10.000                             : 20
Bit rate mode                            : VBR

Originally Posted by tebasuna51

You don't need buy nothing all can be do with free software.

Can be done, yes, but not with best quality results.
According to this https://en.wikibooks.org/wiki/Eac3to...Audio_Decoders I would need Nero, ArcSoft and SurCode at least to get the best sound quality.

Originally Posted by tebasuna51

You can't put EAC3 or DTS in mp4 container, see audio codecs allowed in https://en.wikipedia.org/wiki/Compar...tainer_formats

Please use the preferred mp4 audio codec AAC for lossy audio, the size/quality is comparable to EAC3 and better than AC3.

I tried it and DTS and DTS-HD Master Audio are doing fine in mp4-Container. Only Dolby Digital Plus has problems with the mp4-container.
But the container should support it, because there is no error message like I get when I try it with m4v-container, only a total crash of ffmpeg at the end of the conversion.

I would prefer to put DD+ back in the container without transcoding (losing information). For lossy transcoding that have to be done (DTS) I will use AAC.

Originally Posted by SeeMoreDigital

Out of interest... What playback device(s) are you using?

I will use Apple TV 4K.