multiAVCHD - author Blu-ray/AVCHD (Blu-ray players, camcoders, Viera TV) + (HD) DVD - Page 389

detroit1 · 3rd March 2014, 13:20

I have used multiavchd for a long time and it works as far as the video but I noticed if I have LCPM 5.1 files, it always downconverts it to a very low ac3 at 128kbps

I have all the boxes unchecked unter author and audio

It is supposed to just pass thru and keep the LPCM 5.1

does anyone know how to correct this?

that is the only flaw I see with this

Ghitulescu · 3rd March 2014, 15:29

Quote:

Originally Posted by detroit1

... I noticed if I have LCPM 5.1 files, it always downconverts it to a very low ac3 at 128kbps

I have all the boxes unchecked unter author and audio

It is supposed to just pass thru and keep the LPCM 5.1

does anyone know how to correct this?

I don't know for sure, but aren't you setting a target size?

detroit1 · 3rd March 2014, 16:07

even if I get a target size, what does that have to do with the program downgrading the LPCM 5.1 audio?

It is supposed to just pass thru

I have also noticed that some smaller bitrate video files with pass thru right but other files that have video bit rates of over 15 will convert to the lower 128kbps

that also does not make sense as the Video size should have nothing to do with the audio conversion or pass thru

von Suppé · 4th March 2014, 06:09

This is from a looong time ago, but IIRC this has something to do with the version of tsMuxer that MultiAVCHD uses, which can't handle or (de-)mux pcm audio properly. Also I remember there was a cli tool called "pcm2tsmux" or something that could fix a certain pcm problem before remuxing again. Not sure if it had something to do with endianness. Again, this is ages ago for me.
Maybe you want to try the latest tsMuxer manually; I understand pcm audio is no problem now.

cheers

DoctorM · 4th March 2014, 06:52

I've been searching every set of terms I can think of with no luck finding an answer.

I've got a 31gb BD. I can burn it as 31gb, I can view the files under Windows and it is 31gb.
When I load it in reauthor mode of multiAVCHD, the initial size before I start blanking unnecessary segments and audio tracks is nearly 50gb.

After I blank what I want, it SHOULD come in small enough for a BD25, except it is now around 30gb again.
The outputted BD files include a half dozen new large .m2ts files that weren't on the original disc.

Any idea what could be causing this?

detroit1 · 4th March 2014, 12:30

if you use tsmuxer you won't have the menu and chapters that the multiavchd has

I know tsmuxer by itself will handle the lpcm

does tsmuxer create chapters for each clip?

von Suppé · 5th March 2014, 05:41

@ detroit1

True, with tsMuxer you will not have a menu.
At the Blu-ray tab, you can manually set or copy/paste chapter times.

detroit1 · 5th March 2014, 16:52

not having a menu is not good and it would be more work to manually put in chapters for every clip if you use tsmuxer
mutliavchd has that option to automatically add chapters

what about creating the blu-ray folder and manually being able to put in the clips iwith lpcm 5.1
I thought I have heard of being able to create the folder structure and then put in the files

Ghitulescu · 5th March 2014, 18:12

Quote:

Originally Posted by detroit1

even if I get a target size, what does that have to do with the program downgrading the LPCM 5.1 audio?

Well, LPCM in 6 channels takes a lot of space, better used for video.

jdobbs · 5th March 2014, 19:02

Quote:

Originally Posted by Ghitulescu

Well, LPCM in 6 channels takes a lot of space, better used for video.

Amen.

von Suppé · 6th March 2014, 06:00

I definately can imagine wanting to keep original audio (or compress it losslessly).

Quote:

Originally Posted by detroit1

mutliavchd has that option to automatically add chapters

tsMuxer can do that to. If you take a look at the options, you can choose to insert chapterpoints every user-given minutes. If your input file has chapters, tsMuxer will recognize them and adjust the chapterlist automatically. And - as said - you can copy/paste chaptertimes into the list, should you have the timings in a textfile or something.

DoctorM · 6th March 2014, 06:21

Not to beat a dead horse, but seriously? No one has seen a BD imported for reauthoring increase in size?

detroit1 · 6th March 2014, 21:53

what is strange is that some files with lpcm 5.1 will pass thru like normal and others it will try to use eac to converto ac3

makes no sense. I know I have all the boxes unchecked; you have to in order for it to pass thru the lpcm 5.1

Music Fan · 7th March 2014, 00:25

Quote:

Originally Posted by detroit1

what is strange is that some files with lpcm 5.1 will pass thru like normal and others it will try to use eac to converto ac3

Maybe linked to big/little endian, as von Suppé suggested.

Quote:

Originally Posted by von Suppé

Not sure if it had something to do with endianness.

You can see with MediaInfo if you waves are in big or little endian.

detroit1 · 7th March 2014, 03:10

I checked and they are big indian

also, I had 2 different files with big indian and 1 worked with pass thru lpcm and other did the eac convert to ac3 so I don't think that is it

von Suppé · 7th March 2014, 06:13

Quote:

Originally Posted by detroit1

also, I had 2 different files with big indian and 1 worked with pass thru lpcm and other did the eac convert to ac3 ...

I had to ask this in my first reply but I just realise now by reading over:
Maybe the "faulty" lpcm stream isn't blu-ray compatible in terms of bitrate/bitdepth/samplerate? Then MultiAVCHD will auto re-encode of course. First thing to make sure actually...

Or there's something else jiffy then with some pcm streams. Maybe a header thing... I can't tell.
I know from the past that sometimes plain remuxing handled some issues.
Maybe you can give this a try? Take the one file where lpcm passthru don't work. Load this file in the newest version of tsMuxer (if source is BD folder, select proper mpls: chapters are recognized then). Select wanted streams and mux into BD folder structure again.

Add this output into MultiAVCHD and see if passthru now works. Maybe by remuxing the newer tsMuxer has set something straight or at least did something to make the older tsMuxer to work.

von Suppé · 7th March 2014, 06:30

Quote:

Originally Posted by DoctorM

The outputted BD files include a half dozen new large .m2ts files that weren't on the original disc.

Well, m2ts files can be big in (re-)authoring. If you play these new m2ts files, does the content have anything to do with the source disk?
Or try to reinstall MultiAVCHD. Saved me a couple of times.

detroit1 · 7th March 2014, 16:10

I tried to put the file into tsmuxer and then use multiavchd; same result. It is trying to convert lpcm to ac3
this seems to be random. some files pass thru the right way and others have this audio convert problem

Music Fan · 7th March 2014, 16:20

Are you sure there are not in 44,1 khz ?

detroit1 · 7th March 2014, 17:05

Here is a sample mediainfo from 1 of the files that does pass thru on multiavchd

Format : BDAV
Format/Info : Blu-ray Video
File size : 672 MiB
Duration : 4mn 44s
Overall bit rate mode : Variable
Overall bit rate : 19.8 Mbps
Maximum Overall bit rate : 35.5 Mbps

Video
ID : 4113 (0x1011)
Menu ID : 1 (0x1)
Format : MPEG Video
Format version : Version 2
Format profile : Main@High
Format settings, BVOP : No
Format settings, Matrix : Default
Format settings, GOP : N=12
Codec ID : 2
Duration : 4mn 45s
Bit rate mode : Variable
Bit rate : 12.1 Mbps
Maximum bit rate : 20.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.233
Time code of first frame : 00:00:00:00
Time code source : Group of pictures header
Stream size : 411 MiB (61%)

Audio
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format : PCM
Format settings, Endianness : Big
Format settings, Sign : Signed
Muxing mode : Blu-ray
Codec ID : 128
Duration : 4mn 44s
Bit rate mode : Constant
Bit rate : 6 912 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 24 bits
Stream size : 235 MiB (35%)

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3rd March 2014, 13:20	#7761 \| Link
detroit1 Registered User Join Date: Feb 2014 Posts: 25	I have used multiavchd for a long time and it works as far as the video but I noticed if I have LCPM 5.1 files, it always downconverts it to a very low ac3 at 128kbps I have all the boxes unchecked unter author and audio It is supposed to just pass thru and keep the LPCM 5.1 does anyone know how to correct this? that is the only flaw I see with this

3rd March 2014, 16:07	#7763 \| Link
detroit1 Registered User Join Date: Feb 2014 Posts: 25	even if I get a target size, what does that have to do with the program downgrading the LPCM 5.1 audio? It is supposed to just pass thru I have also noticed that some smaller bitrate video files with pass thru right but other files that have video bit rates of over 15 will convert to the lower 128kbps that also does not make sense as the Video size should have nothing to do with the audio conversion or pass thru

4th March 2014, 06:09	#7764 \| Link
von Suppé Registered User Join Date: Dec 2013 Posts: 629	This is from a looong time ago, but IIRC this has something to do with the version of tsMuxer that MultiAVCHD uses, which can't handle or (de-)mux pcm audio properly. Also I remember there was a cli tool called "pcm2tsmux" or something that could fix a certain pcm problem before remuxing again. Not sure if it had something to do with endianness. Again, this is ages ago for me. Maybe you want to try the latest tsMuxer manually; I understand pcm audio is no problem now. cheers

4th March 2014, 06:52	#7765 \| Link
DoctorM Registered User Join Date: Sep 2005 Posts: 558	I've been searching every set of terms I can think of with no luck finding an answer. I've got a 31gb BD. I can burn it as 31gb, I can view the files under Windows and it is 31gb. When I load it in reauthor mode of multiAVCHD, the initial size before I start blanking unnecessary segments and audio tracks is nearly 50gb. After I blank what I want, it SHOULD come in small enough for a BD25, except it is now around 30gb again. The outputted BD files include a half dozen new large .m2ts files that weren't on the original disc. Any idea what could be causing this?

4th March 2014, 12:30	#7766 \| Link
detroit1 Registered User Join Date: Feb 2014 Posts: 25	if you use tsmuxer you won't have the menu and chapters that the multiavchd has I know tsmuxer by itself will handle the lpcm does tsmuxer create chapters for each clip?

5th March 2014, 05:41	#7767 \| Link
von Suppé Registered User Join Date: Dec 2013 Posts: 629	@ detroit1 True, with tsMuxer you will not have a menu. At the Blu-ray tab, you can manually set or copy/paste chapter times.

5th March 2014, 16:52	#7768 \| Link
detroit1 Registered User Join Date: Feb 2014 Posts: 25	not having a menu is not good and it would be more work to manually put in chapters for every clip if you use tsmuxer mutliavchd has that option to automatically add chapters what about creating the blu-ray folder and manually being able to put in the clips iwith lpcm 5.1 I thought I have heard of being able to create the folder structure and then put in the files

6th March 2014, 06:21	#7772 \| Link
DoctorM Registered User Join Date: Sep 2005 Posts: 558	Not to beat a dead horse, but seriously? No one has seen a BD imported for reauthoring increase in size?

6th March 2014, 21:53	#7773 \| Link
detroit1 Registered User Join Date: Feb 2014 Posts: 25	what is strange is that some files with lpcm 5.1 will pass thru like normal and others it will try to use eac to converto ac3 makes no sense. I know I have all the boxes unchecked; you have to in order for it to pass thru the lpcm 5.1

7th March 2014, 03:10	#7775 \| Link
detroit1 Registered User Join Date: Feb 2014 Posts: 25	I checked and they are big indian also, I had 2 different files with big indian and 1 worked with pass thru lpcm and other did the eac convert to ac3 so I don't think that is it

7th March 2014, 16:10	#7778 \| Link
detroit1 Registered User Join Date: Feb 2014 Posts: 25	I tried to put the file into tsmuxer and then use multiavchd; same result. It is trying to convert lpcm to ac3 this seems to be random. some files pass thru the right way and others have this audio convert problem

7th March 2014, 16:20	#7779 \| Link
Music Fan Registered User Join Date: May 2009 Location: Belgium Posts: 1,744	Are you sure there are not in 44,1 khz ?

7th March 2014, 17:05	#7780 \| Link
detroit1 Registered User Join Date: Feb 2014 Posts: 25	Here is a sample mediainfo from 1 of the files that does pass thru on multiavchd Format : BDAV Format/Info : Blu-ray Video File size : 672 MiB Duration : 4mn 44s Overall bit rate mode : Variable Overall bit rate : 19.8 Mbps Maximum Overall bit rate : 35.5 Mbps Video ID : 4113 (0x1011) Menu ID : 1 (0x1) Format : MPEG Video Format version : Version 2 Format profile : Main@High Format settings, BVOP : No Format settings, Matrix : Default Format settings, GOP : N=12 Codec ID : 2 Duration : 4mn 45s Bit rate mode : Variable Bit rate : 12.1 Mbps Maximum bit rate : 20.0 Mbps Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate : 25.000 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Compression mode : Lossy Bits/(Pixel*Frame) : 0.233 Time code of first frame : 00:00:00:00 Time code source : Group of pictures header Stream size : 411 MiB (61%) Audio ID : 4352 (0x1100) Menu ID : 1 (0x1) Format : PCM Format settings, Endianness : Big Format settings, Sign : Signed Muxing mode : Blu-ray Codec ID : 128 Duration : 4mn 44s Bit rate mode : Constant Bit rate : 6 912 Kbps Channel(s) : 6 channels Channel positions : Front: L C R, Side: L R, LFE Sampling rate : 48.0 KHz Bit depth : 24 bits Stream size : 235 MiB (35%)