DTS 5.1 not valid sound option?

[socker_dad]

Before we start - I have legitimately purchased the blu-ray movies in question: Ripping is for my viewing convenience since storing my 2,000 titles just isn't feasible.

I guess I have a crappy TV that does not support, i.e. play, DTS 5.1. The MKV and MP4 ripped movie show just fine - just no sound. Blasted Phillips!

The ripping software shows DTS 6-channel (no version...), all sorts of foreign languages (I knew I should have paid attention to Spanish in high school!), and two English AC3's - which are both director commentaries.

So, the ripped files do not have sound. Now how to solve my dilemma. Do I get a new TV or invest in a device in between the storage device (8-Tb WD_Black) and the TV?

Something else to consider: I'm hard of hearing, so I embed the English subtitles in the rip. Over half of the movies do not show these subtitles. Is that a problem with the Roku player on the TV? And will an intermediary player between the storage device and the TV fix that as well?

Thanks in advance!

[ProWo]

So, the ripped files do not have sound. Now how to solve my dilemma.
Something else to consider: I'm hard of hearing, so I embed the English subtitles in the rip. Over half of the movies do not show these subtitles.

No need to buy new hardware.
For the audio problem: convert the DTS to AC3, then mux the the videostream with the new ac3 audio.
For the subtitles: You should check what type of subtitles work with your TV player.
Srt subtitles in mp4 or mkv should work.
As last resort you can burn in the subtitles (as part of the videostream).

All this can be done with clever FFmpeg-GUI.

[socker_dad]

I have spent the last few days trying to understand clever FFmpeg-GUI (latest version). Reading the documentation included in the download and YouTube videos: I still don't understand how to do what I am trying to do!

I've attached a file of my MKV file that I selected (Screenshot 2026-01-03 185057), but I'm not sure as to what to do as the next step. I see "Stream :Audiio.dts.8 Channels.eng." I believe this represents the audio portion of my file (Screenshot 2026-01-03 185205). But - I am not sure what to do next. I think I want to Encode/Convert Audio stream, but I am stymied on what any if the options mean!!!-

I'm trying to get from DTS to AC3 audio, without having to re-rip my movies. What are the correct steps?

[ProWo]

I'm trying to get from DTS to AC3 audio, without having to re-rip my movies. What are the correct steps?

Set ac3 as encoder, 448 as bitrate, 6 channels.
Leave all other settings as they are.
Click encode.
If finished, click multiplex.
You'll see your source streams in blue, the new ac3 stream in another color.
Deselect the source DTS audiostream (on the left, in the Set column). Leave all other streams checked.
Set the container to mkv and click multiplex.

You'll find your new mkv video with ac3 audio in your target folder.
Test it on your TV.

BTW
Your DTS audio stream is 8 channels, not 5.1

[pandy]

Set ac3 as encoder, 448 as bitrate, 6 channels.
Leave all other settings as they are.

Issue with DTS that it use usually different 5.1 layout than AC3 (5.1 vs 5.1 side) - are you addressing this in your GUI ?

[ProWo]

Set ac3 as encoder, 448 as bitrate, 6 channels.
Leave all other settings as they are.

Issue with DTS that it use usually different 5.1 layout than AC3 (5.1 vs 5.1 side) - are you addressing this in your GUI ?

You can select the layout at encoding.
Remapping is also available.

[pandy]

You can select the layout at encoding.
Remapping is also available.

Problem is different audio field - this is not trivial channel remapping.

[ProWo]

Problem is different audio field - this is not trivial channel remapping.

Interesting. Could you elaborate this further?