eac3to - audio conversion tool

[Thunderbolt8]

does he -slowdown function actually remove the "EX" from ac3 tracks? I got an ac3 track here which is DD EX 5.1, but when I use -slowdown the track is only normal DD 5.1 after that. or does it maybe only remove the EX flag and the slowed down track is still EX? or was it never EX to begin with and only had the flag, which then correctly got removed at processing?

http://www.sendspace.com/file/13ese3

[nautilus7]

Proper EX decoding results in 6.1ch, but there's is no such decoder available. All we can get is 5.1. As a result, if you decode/slowdown/re-encode the track you can't get the original EX form back.

Happy New Year to everybody.

[madshi]

As far as I understand, the mixed in back channel ("EX") should not get lost when slowing down audio (someone correct me, please, if I'm wrong). However, currently eac3to doesn't *ever* set the EX flag when using Aften to encode an AC3 track. Which means that in every case where audio is reencoded, the EX flag is lost. I have on my to do list to transport the EX flag through to the final AC3 file, but this is not implemented yet...

[saint-francis]

Eac3to struggles with Universal Soldier. It says that there is only an 18 minute 480i track when in reality there is also a full length movie in there too. Here is the entire playlist folder.

[madshi]

Originally Posted by saint-francis

Eac3to struggles with Universal Soldier. It says that there is only an 18 minute 480i track when in reality there is also a full length movie in there too. Here is the entire playlist folder.

I need the CLIPINF folder, too. Thanks!

[saint-francis]

Originally Posted by madshi

I need the CLIPINF folder, too. Thanks!

Here you go.

[williewonton]

@madshi

Many thanks, all sorted

[asarian]

@madshi

I'm getting the following error on my Austin Powers 2 Blu-Ray: "Lossless check failed" (see below). Is that something I can ignore? eac3to seems to indicate success after all, but I'm not sure.

Thanks


--------
eac3to 00002.m2ts 4: c:\video\temp.pcm
M2TS, 1 video track, 3 audio tracks, 1 subtitle track, 1:29:35
1: Chapters, 25 chapters
2: VC-1, 1080p24 /1.001 (16:9)
3: AC3, English, 5.1 channels, 640kbps, 48khz, dialnorm: -27dB
4: TrueHD/AC3, English, 5.1 channels, 48khz, dialnorm: -27dB
(embedded: AC3, 5.1 channels, 640kbps, 48khz, dialnorm: -27dB)
5: AC3 Surround, English, 2.0 channels, 192kbps, 48khz, dialnorm: -27dB
6: Subtitle (PGS), English
[a04] Extracting audio track number 4...
[a04] Extracting TrueHD stream...
[a04] Removing TrueHD dialog normalization...
[a04] Decoding with libav/ffmpeg...
[a04] Swapping endian...
[a04] Remapping channels...
[a04] Creating file "c:\video\temp.24bit.pcm"...
[libav] Lossless check failed - expected 0, calculated 91
[a04] The original audio track has a constant bit depth of 16 bits.
[a04] The zero bytes were successfully removed.
Video track 2 contains 128879 frames.
eac3to processing took 12 minutes, 17 seconds.
Done.

[Thunderbolt8]

might be the same case I had, meaning its only that one instance inside the track which wont be lossless then, while the rest of all other million bytes are or something like that. in other words: you wont notice any difference.

[asarian]

Originally Posted by Thunderbolt8

might be the same case I had, meaning its only that one instance inside the track which wont be lossless then, while the rest of all other million bytes are or something like that. in other words: you wont notice any difference.

Thanks. It looks, indeed, rather benign. I thought that (presumably) the checksum fails because of leading/trailing zeroes (?). But it's good to know I can safely ignore it.

[Weirdo]

Please forgive some '-already-answered-but-can't-search-huge-thread' questions...
I want to convert a DTS-HD MA 5.1 24bit/48KHz track to 24/48 flac from a BD folder/m2ts file.

1. Source reports -8ms, does that mean I've got to add +8ms for any type of destination file, flac included?
2. The blu-ray remapping option (or any other option) isn't needed for this, right?

edit: 3. Are there known issues with different versions of the Arcsoft DTS decoder?

Thanks

[asarian]

Originally Posted by Weirdo

I want to convert a DTS-HD MA 5.1 24bit/48KHz track to 24/48 flac from a BD folder/m2ts file.

1. Source reports -8ms, does that mean I've got to add +8ms for any type of destination file, flac included?

No, that isn't necessary. Ere you'd expect to have to include "-8ms" also, but that isn't necessary either.

2. The blu-ray remapping option (or any other option) isn't needed for this, right?

Nope, don't need it.

N.B. Actually, never seen an occassion where I did need the "-blu-ray" option. I convert TrueHD/DTS-MA -> LPCM without it, at least.

3. Are there known issues with different versions of the Arcsoft DTS decoder?

If you bought an Arcsoft Product, like Total Media Theatre, your product will always upgrade to the latest and greatest anyway. But, far as I know, Arcsoft DTS decoder has no known issues.

[Thunderbolt8]

at least within eac3to it cannot decode DTS-HD 1.0 tracks

[The_Keymaker]

This has probably been answered somewhere in this thread, but Instead of plowing through 380+ pages I'm hoping someone can help me with a simple answer.

How or what do I need to do to the .sup subtitle files extracted by eac3to to get them in a format that I can mux with my audio and video files into .MKV? I believe MKVMerge can handle subtitles in the SRT, SSA, ASS and Vobsub formats (are there others MKVmerge can use?).

Thanks

[madshi]

Originally Posted by saint-francis

Eac3to struggles with Universal Soldier. It says that there is only an 18 minute 480i track when in reality there is also a full length movie in there too.

This is a troublesome playlist configuration. The main movie titles asks for this:

(1) play 00002.m2ts from start to end
(2) play the first second of 00002.m2ts another time

eac3to didn't like this configuration, because usually playlists which ask for the same m2ts part to be played more than once are menu titles.

The next eac3to will "fix" this problem.

[madshi]

Originally Posted by The_Keymaker

How or what do I need to do to the .sup subtitle files extracted by eac3to to get them in a format that I can mux with my audio and video files into .MKV? I believe MKVMerge can handle subtitles in the SRT, SSA, ASS and Vobsub formats (are there others MKVmerge can use?).

There are tools out there to OCR the subtitles and convert them to a text format like SRT. It can be a painful process, sometimes. Look for "SupRip".

[bmnot]

How come eac3to can't read from/work with .mkv files, even if it created it?

[dat720]

madshi

I just want to say Fan-Friggen-Tastic work with eac3to... it's plain awesome, never fails me, i was about to post a question regarding a tricky DTS file i had, it spits the error:
Can't downmix this channel configuration ($60f).
Internal error - unknown audio output format!

But a simple update from 2.77 to 2.87 fixed my probem.... awesome work!!! keep it up.

Do you have a paypal account that i could donate to say thanks for your time and effort?

[yesgrey]

Is this a bug?

eac3to v2.87
command line: eac3to f:\temp\fly_dxva_hd_hq.264 test.mkv
------------------------------------------------------------------------------
h264/AVC, 1920x816 24p /1.001 (40:17)
Muxing video to Matroska...
Added fps value to MKV header.
Video track 1 contains 300 frames.
eac3to processing took 1 second.
Done.

The "(40:17)" is the duration of the file? As you see, the file only has 300 frames.
Maybe it's a bug in x264 AUDs placement?...
You can download the file here:
http://www.megaupload.com/?d=6XTI9UH5

By the way, I have suggested MeGUI authors to automatically set the --aud option in x264 when outputting RAWAVC streams, and they agree do it in the next release.

[nurbs]

The 40:17 is the aspect ratio of the video.