DTS Express

[k-c-ksum]

I tried this (using TSDEMUX to extract the DTS Express). TSMUXER returns as if the stream was muxed -- but it isn't. I tried muxing with only the demuxed DTS Express file and the M2TS had a zero length.

Too bad, I was hoping I could "fool" it into muxing for me. Oh, well... back to my original plan.

so you got the mux complete but it was infact empty :(

i wasnt sure if my method was successful or not as i wasnt sure if the audio was muxed back into the rwrong place or it didnt play for some unknown reason. Good luck with the original plan :)
intresteing to see how you pull it off. As mentioned a few posts above. Perfect time for a Pro only version :)

[bennyutzer]

is there anything new in that department? reading, remuxing and converting dts-express?

i use handbrake to rip untouched blurays, and every now and then i come across a secondary video/audio track that uses dts-express for its commentary (most recently for example the "sherlock holmes"-movies by guy richie). i can't play it in media player classic HC or VLC, i can't load it into handbrake and therefore have no way to process it.

i would like to know how i could make the dts-express readable in any converter program, so i can transform it to some other format.

any advice is welcome ...

greetz
benny

[jdobbs]

BD-RB handles DTS Express correctly.January 11th, 2014 - v0.46.03
- Updated code to fully support DTS Express
secondary streams without the need for
special processing.As for reencoding to another format... that's not an option.

[jymbob]

BD-RB handles DTS Express correctly.January 11th, 2014 - v0.46.03
- Updated code to fully support DTS Express
secondary streams without the need for
special processing.As for reencoding to another format... that's not an option.

I note the latest release of ffmpeg now supports transcoding of DTS Express.

In fact, I've just ripped a PIP track by:

backing up full disk with MakeMKV
Demuxing with tsMuxeR
converting the DTS Express track to ac3 with ffmpeg
remuxing with MKVToolnix
compressing with Handbrake


I'm hoping one (all?) of those tools will soon be able to use ffmpeg to transcode it natively!

Just FYI

[jdobbs]

I note the latest release of ffmpeg now supports transcoding of DTS Express.

In fact, I've just ripped a PIP track by:

backing up full disk with MakeMKV
Demuxing with tsMuxeR
converting the DTS Express track to ac3 with ffmpeg
remuxing with MKVToolnix
compressing with Handbrake


I'm hoping one (all?) of those tools will soon be able to use ffmpeg to transcode it natively!

Just FYIOk. But the question is: Why reencode it at all? Just for the fun of it? It's already an exceptionally efficient CODEC and it's only used for secondary audio.

[Midzuki]

i use handbrake to rip untouched blurays, and every now and then i come across a secondary video/audio track that uses dts-express for its commentary (most recently for example the "sherlock holmes"-movies by guy richie). i can't play it in media player classic HC or VLC, i can't load it into handbrake and therefore have no way to process it.

That's weird, to say the least.
Because "since ages ago", LAV Filters (which are the default demuxers and decoders for MPC-HC) can decode DTS-Express correctly. Up-to-date builds of VLC should be able to deal with DTS-Express too (or at least I think so).

As for Handbrake... well, you really should complain at its developers.

[ndjamena]

Ok. But the question is: Why reencode it at all? Just for the fun of it? It's already an exceptionally efficient CODEC and it's only used for secondary audio.

This is one possible reason:
http://forum.videohelp.com/threads/367388-Ripping-Starfleet-Access-for-Star-Trek-TOS-Blurays

[jymbob]

Ok. But the question is: Why reencode it at all? Just for the fun of it? It's already an exceptionally efficient CODEC and it's only used for secondary audio.

The usual reason: because it doesn't provide me with what I need. Specifically because I can't play it back from my plex server on all the devices I want to. And yes, I do actually want to watch the PIP tracks too. Send main feature to Chromecast, playback secondary PIP track on tablet/laptop.

[bennyutzer]

The usual reason: because it doesn't provide me with what I need. Specifically because I can't play it back from my plex server on all the devices I want to. [...]

second that, it took me forever to find a media player that plays all my videos on the tv (pc was not an option, since the tv is quite old) and besides, whenever you use an unusual codec, you're gonna run into trouble when you pass a video to someone else, it's better to use established codecs and formats, it saves you a lot of nerves...

on another note: i have to say that these random questions for posting are a pain in the a$$$$$ (just wanted to put that out there)

[bennyutzer]

In fact, I've just ripped a PIP track by:

backing up full disk with MakeMKV
Demuxing with tsMuxeR
converting the DTS Express track to ac3 with ffmpeg
remuxing with MKVToolnix
compressing with Handbrake


would you mind sharing a tutorial on step 3 of this? would be much appreciated (not so good with command line tools ;-))

[sneaker_ger]

ffmpeg -i "input.dts" -c:a ac3 -b:a 640k "output.ac3"
(ffmpeg can work directly on the mkv files without prior demuxing as well)

[jymbob]

ffmpeg -i "input.dts" -c:a ac3 -b:a 640k "output.ac3"
(ffmpeg can work directly on the mkv files without prior demuxing as well)

I tend to assume ffmpeg can detect formats better than I can, so I tend to just use:

ffmpeg -i "input.dts" "output.ac3"

(Apologies for the 9 month delay - only just noticed the post)