eac3to - audio conversion tool

[madshi]

Originally Posted by Jaja1

You probably missed my post

Not really, but your question has already been answered about a dozen times earlier in this thread. Just do a search for "Lossless check failed".

Originally Posted by rebkell

I muxed the audio you repaired back in and the first one which I'm assuming was the same as an audio gap of 750ms reported at 54:39 didn't appear to have any problems and the audio went out of sync.

You also reported an audio gap of 745ms at 1:49:07, which would probably coincide with the discon at the 7GB mark, there was definitely a problem in that area in the original, because that was where muxing originally caused the audio/video to go out of sync, and 745ms seems probably about right.

Ok, thanks. Still not sure whether the broadcasting is faulty or whether your recording was faulty. But probably in the end it doesn't matter much...

Originally Posted by nautilus7

That explains. OCR is not needed of course, it's not important at all. Thanks!

I've asked Mosu yesterday whether he can add a version resource to the GUI. That would solve the problem...

[nautilus7]

Originally Posted by madshi

I've asked Mosu yesterday whether he can add a version resource to the GUI. That would solve the problem...

I 've read your request!

[Jaja1]

Originally Posted by madshi

Not really, but your question has already been answered about a dozen times earlier in this thread. Just do a search for "Lossless check failed".

I know this used to show up on the join spots of seamless branching movies and that this wasn't a problem anymore, but this one is a single file. I see however that this isn't clear from the log or post, stupid of me. So the same "no problem" applies to non-seamless branching movies as well?

[madshi]

If it's after "[libav] End of stream indicated" then it doesn't matter.

[rica]

Hi guys,
I've been making some trials for two days.
Finally i can say it is possible to demux directly from BD/HD Disc to HDD with eac3to; which means lots of unwanted things won't be ripped on your disk. AnyDVD-HD is working on the back stage btw.
I selected one of the most difficult ones of my collection which including many m2ts files in one playlist for test.
No issues.

getting playlist info:

C:\>eac3to\eac3to.exe E:
1) 00056.mpls, 2:17:14
   [0+2+6+8+9+12+13+15+16+19+20+21+24+25+26+28+118+119+32+33+34+37+39+40+42+43+45+46+49].m2ts
   - h264/AVC, 1080p24 /1.001 (16:9)
   - TrueHD, English, multi-channel, 48khz
   - DTS Master Audio, English, multi-channel, 48khz
**************************

getting track info:

C:\>eac3to\eac3to.exe E: 1)
M2TS, 1 video track, 2 audio tracks, 20 subtitle tracks, 2:17:13
1: Chapters, 20 chapters
2: h264/AVC, 1080p24 /1.001 (16:9)
3: TrueHD/AC3, English, 5.1 channels, 48khz
4: DTS Master Audio, English, 5.1 channels, 24 bits, 48khz
5: Subtitle (PGS), English
****************
First Pass:

C:\>eac3to\eac3to.exe E: 1) 2: G:\Out\video_BD.h264 4: G:\Out\audio.dtshd

M2TS, 1 video track, 2 audio tracks, 20 subtitle tracks, 2:17:13


1: Chapters, 20 chapters
2: h264/AVC, 1080p24 /1.001 (16:9)
3: TrueHD/AC3, English, 5.1 channels, 48khz
4: DTS Master Audio, English, 5.1 channels, 24 bits, 48khz
5: Subtitle (PGS), English
**************
[v02] Extracting video track number 2...
[a04] Extracting audio track number 4...
[v02] Creating file "G:\Out\video_BD.h264"...
[a04] Creating file "G:\Out\audio.dtshd"...
[a04] Audio overlaps for 7ms at playtime 0:23:06.
[***********************************
[a04] Audio overlaps for 10ms at playtime 2:11:04.
[a04] The audio file was demuxed without making use of the gap/overlap information.
[a04] Please rerun the same eac3to command line. That will correct the gaps/over
laps.
Video track 2 contains 197424 frames.
eac3to processing took 1 hour, 13 minutes.
Done.

Second Pass:

C:\>eac3to\eac3to.exe E: 1) 2: G:\Out\video_BD.h264 4: G:\Out\audio.dtshd

M2TS, 1 video track, 2 audio tracks, 20 subtitle tracks, 2:17:13
1: Chapters, 20 chapters
2: h264/AVC, 1080p24 /1.001 (16:9)
3: TrueHD/AC3, English, 5.1 channels, 48khz
4: DTS Master Audio, English, 5.1 channels, 24 bits, 48khz
5: Subtitle (PGS), English

Audio gap description file detected, will be used for processing...
[v02] Extracting video track number 2...
[a04] Extracting audio track number 4...
[a04] Realizing DTS gaps...
[v02] Creating file "G:\Out\video_BD.h264"...
[a04] Creating file "G:\Out\audio.dtshd"...
Video track 2 contains 197424 frames.
eac3to processing took 1 hour, 12 minutes.
Done.

[saint-francis]

Originally Posted by rica

Hi guys,
I've been making some trials for two days.
Finally i can say it is possible to demux directly from BD/HD Disc to HDD with eac3to; which means lots of unwanted things won't be ripped on your disk. AnyDVD-HD is working on the back stage btw.
I selected one of the most difficult ones of my collection which including many m2ts files in one playlist for test.
No issues.

If you look back to the early days of this thread you will see that many people attempting what you are ran into many problems. Maybe anydvd has improved since then, I don't know. The one time I tried it I got eac3to to successfully process the video but it had all kinds of crazy colors from time to time. The only solution to the problem was to rip the disk first.

[rebkell]

Wow, I've been doing this for the last 2 or 3 months or so, ever since Madshi got the playlists working for blu-rays, and I've never had any problems.

[rica]

Originally Posted by saint-francis

If you look back to the early days of this thread you will see that many people attempting what you are ran into many problems. Maybe anydvd has improved since then, I don't know. The one time I tried it I got eac3to to successfully process the video but it had all kinds of crazy colors from time to time. The only solution to the problem was to rip the disk first.

No, i think you have to update.
I also asked slysoft guys.
I think the problem has been solved.
Why not give it a go?

[rica]

Originally Posted by rebkell

Wow, I've been doing this for the last 2 or 3 months or so, ever since Madshi got the playlists working for blu-rays, and I've never had any problems.

Thanks for the feedback but why didn't you share this before; if i've missed any post from you sorry in advance.

[saint-francis]

Originally Posted by rebkell

Wow, I've been doing this for the last 2 or 3 months or so, ever since Madshi got the playlists working for blu-rays, and I've never had any problems.

Crazy. I follow this thread religiously and I haven't seen any mention of people doing this since everyone generally decided that it was unsafe.

Originally Posted by rica

I think the problem has been solved.
Why not give it a go?

Thanks, I will!

[peterjcat]

I also assumed that people were just using eac3to straight from the disc with AnyDVD HD in the background! I only ever rip to HDD first when I know I'll have to do more than one pass for whatever reason. When I've had problems, ripping to HDD first has never fixed them. I think realtime AnyDVD HD must be pretty much transparent by now.

[rebkell]

Originally Posted by rica

Thanks for the feedback but why didn't you share this before; if i've missed any post from you sorry in advance.

I never intended to hold anything back, every example I've ever used always started off with eac3to d: , with d: being my Blu-ray/HD-DVD drive, I just assumed everyone was going straight from their drives. Sorry guys, I really thought everyone was just using their drive in combination with anydvd.

[fib0by]

Trying to demux files recorded with MythTV from digital HD cable. eac3to reports a very large time difference for the audio track, over 1000 ms. How is that possible?

E:\>eac3to E:\debate\1091_20080926180000.mpg
TS, 1 video track, 3 audio tracks, 1:59:57
1: MPEG2, 1080i60 /1.001 (16:9)
2: AC3, English, 2.0 channels, 384kbps, 48khz, dialnorm: -24dB, -1150ms
3: AC3, French, 2.0 channels, 192kbps, 48khz, dialnorm: -27dB, -1092ms
4: AC3, esl, 2.0 channels, 192kbps, 48khz, dialnorm: -27dB, -1059ms

Here's a 50 MB sample:

http://www.sendspace.com/file/b12wpo

The file is played fine by MythTV, audio and video are in sync.

I demuxed the sample with eac3to and remuxed the tracks with tsMuxeR. The final result played fine, audio and video were in sync, but a chunk at the beginning of the video, about a second long, was missing - so it looks like eac3to dropped some video to compensate for the time difference. That's fine, it doesn't bother me too much.

So all is well, more or less, but I'm puzzled by the size of the difference. Is that how HD is being transmitted? Or is it something that MythTV did?

[EPiPH0NE]

Originally Posted by saint-francis

Crazy. I haven't seen any mention of people doing this since everyone generally decided that it was unsafe.

Been doing it for ages now with zero issues.

[rica]

Hey guys, thanks for the feedbacks.

[fofwp]

I have an issue with Constantine and Serenity HD-DVD's. I converted the audio for both these titles to ac3 (using libav), and it appears that at some places the audio clips.

I can upload a small clip of a particular scene in Constantine where this is most prominent. The scene is a flashback when he is a kid and he sees a demon on a bus. However, I don't know how to cut this small portion out of the main mkv. Any help?

[madshi]

Originally Posted by fib0by

Trying to demux files recorded with MythTV from digital HD cable. eac3to reports a very large time difference for the audio track, over 1000 ms. How is that possible?

E:\>eac3to E:\debate\1091_20080926180000.mpg
TS, 1 video track, 3 audio tracks, 1:59:57
1: MPEG2, 1080i60 /1.001 (16:9)
2: AC3, English, 2.0 channels, 384kbps, 48khz, dialnorm: -24dB, -1150ms
3: AC3, French, 2.0 channels, 192kbps, 48khz, dialnorm: -27dB, -1092ms
4: AC3, esl, 2.0 channels, 192kbps, 48khz, dialnorm: -27dB, -1059ms

Here's a 50 MB sample:

http://www.sendspace.com/file/b12wpo

The file is played fine by MythTV, audio and video are in sync.

I demuxed the sample with eac3to and remuxed the tracks with tsMuxeR. The final result played fine, audio and video were in sync, but a chunk at the beginning of the video, about a second long, was missing - so it looks like eac3to dropped some video to compensate for the time difference. That's fine, it doesn't bother me too much.

So all is well, more or less, but I'm puzzled by the size of the difference. Is that how HD is being transmitted? Or is it something that MythTV did?

That's how it's transmitted, sometimes. Nothing wrong with that. As long as audio sync is correct there's nothing to worry about. Although I'll check why the first video frames seem to be missing. Shouldn't really be the case. eac3to dismisses non-"I" frames at the beginning of the stream. But these non-"I" frames should not decode correctly, anyway.

P.S: Just checked: The first video frames are in the file before the file information package. So basically in order to understand the first video frames eac3to would have to first read a part of the file to find the information package and then skip back to the beginning and reread everything. That's not how eac3to works right now. But it should be possible to do it. I'll put it on my to do list.

BTW, what is that third audio track? The first two audio streams have the language identifiers "eng" (English) and "fra" (French). But the third has the language identifier "esl" which I don't know how to interpet.

Originally Posted by fofwp

I have an issue with Constantine and Serenity HD-DVD's. I converted the audio for both these titles to ac3 (using libav), and it appears that at some places the audio clips.

I can upload a small clip of a particular scene in Constantine where this is most prominent. The scene is a flashback when he is a kid and he sees a demon on a bus. However, I don't know how to cut this small portion out of the main mkv. Any help?

I'd need the original E-AC3 data for that scene. You can demux the original data by using eac3to. Then you can use delaycut to cut it down.

[deathlord]

Originally Posted by madshi

A sample would be nice. Are you sure that the back channels are silent throughout the whole movie? I mean they may be silent for most of the movie, but maybe they're used only once in a while?

Sorry for taking so long. I have scanned through the file several times and the back channels are always at -inf. However, I don't know how to systematically check if there really is no signal whatsoever.
Here is a sample:
http://www.megaupload.com/?d=GLQ2UP05

deathlord

[fib0by]

Originally Posted by madshi

That's how it's transmitted, sometimes. Nothing wrong with that. As long as audio sync is correct there's nothing to worry about.

Right, I was just curious.
So, you're saying, that's how it comes through the cable. Well, I just recorded another show, same channel, and the values are different:

E:\debate>eac3to debate2.mpg
TS, 1 video track, 3 audio tracks, 1:59:55
1: MPEG2, 1080i60 /1.001 (16:9)
2: AC3, English, 2.0 channels, 384kbps, 48khz, dialnorm: -24dB, -872ms
3: AC3, French, 2.0 channels, 192kbps, 48khz, dialnorm: -27dB, -846ms
4: AC3, esl, 2.0 channels, 192kbps, 48khz, dialnorm: -27dB, -813ms

Weird. Why would they change the delay all the time?

BTW, what is that third audio track? The first two audio streams have the language identifiers "eng" (English) and "fra" (French). But the third has the language identifier "esl" which I don't know how to interpet.

I have no idea. The content of all 3 tracks seems to be the same (english).

[ACrowley]

can anybody give me a link to some 7.1 samples (dtshd,truehd) ?

edit:
i have some samples now