Encoding m2ts file with DD+ audio - author & burn as AVCHD - audio just pulsing sound

[lchiu7]

I have a bunch of HD-DVD's that I have been ripping using dumphd and then compressing the video using MEGUI so that it will fit on a SL DVD. I am using tonmt to create the .ts file from the .evo files with DD+ audio.

I then mux the recompressed video with the DD+ audio from the original .ts file created by tonmt using tsmuxer and output and avchd folder structure. This was then burnt to a DVD (I have tried regular, RW, DL etc ) as UDF 2.5.

Both my PS3 and Oppo BDP80 recognise the disc as AVCHD and begin to play it and my HK receiver displays DD+ as audio but the audio is just a series of repeating pulse sounds.

Ouf of interest I tried using multiAVCHD to author the disc and the same problem occurs. But if I tell multiAVHD to re-encode the audio as standard DD, the discs plays fine. This suggests to me that there is some problem with DD+ audio.

Here are the main properties of the video file.

Video (which is fine since it plays okay)

Video
ID : 4113 (0x1011)
Menu ID : 1 (0x1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Duration : 14mn 59s
Bit rate : 4 655 Kbps
Nominal bit rate : 4 000 Kbps
Width : 1 920 pixels
Height : 1 080 pixels

Audio

Audio
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format : E-AC-3
Format/Info : Audio Coding 3
Duration : 14mn 59s
Bit rate mode : Constant
Bit rate : 1 536 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Surround: L R, LFE
Sampling rate : 48.0 KHz

Does anybody have any ideas why this might be occurring?

Thanks
Stream size : 165 MiB (24%)

[shon3i]

DD+ Audio from HDDVD is not compliant with Blu-Ray and AVCHD. AVCHD even not support any of DD+, just DD or LPCM. So that is your answer :)

[SeeMoreDigital]

DD+ Audio from HDDVD is not compliant with Blu-Ray and AVCHD. AVCHD even not support any of DD+, just DD or LPCM. So that is your answer :)Indeed...

You might have more luck if you played them with a dedicated network media player - which is what I do.

Other than that, you'll have to re-encode the E-AC3 audio stream to an (640Kbps) AC3 audio stream using say, UsEac3to v0.8.1 (http://forum.doom9.org/showthread.php?t=145574).


Cheers

[lchiu7]

Well maybe and maybe not.

Since I have been able to play AVCHD with DD+ audio on a modest but fairly recent Sony BD player I contacted Oppo to ask what the problem could be.

They have not seen the problem reported but suggested that I switch the Oppo to decode the audio internally and output PCM rather than bitstream. That worked fine. Of course the AVR note the audio is multichannel PCM but the Oppo displays DD+ as the native audio found on the disc. They said they would look at the sample I sent them to see if they could reproduce the problem and potentially fix it with a future firmware upgrade.

More interestingly ACVHD titles ripped from HD-DVD with TrueHD audio play fine on the Oppo in bitstream format as they do on m PS3. The PS3 cannot also play the DD+ titles and my PS (FAT) has no option to choose between bitstream or PCM over HDMI.

I also do have a media player (Popcorn Hour) but for some reason it also cannot play .ts titles with DD+ audio. Well they play but with no audio but .ts with TrueHD play fine. That's interesting.

[SeeMoreDigital]

I also do have a media player (Popcorn Hour) but for some reason it also cannot play .ts titles with DD+ audio. Well they play but with no audio but .ts with TrueHD play fine. That's interesting.That sounds like a SigmaDesigns chip-set "firmware" issue...

Could be a similar thing with your Oppo, which is fitted with a Mediatek chip-set :eek:

That said, since the demise of the HD-DVD format, there is very little incentive for A/V chip-set manufacturers to support Dolby Digital Plus

[shon3i]

Chip-sets usually follow some current specification, which currently is blu-ray, so DD+ that not is BD compliant (DD+ with DD core) will probably not played. TrueHD streams usually comes with DD core

[SeeMoreDigital]

Unfortunately the primary goal of any A/V chip-set manufacturer is to promote and shift their "new" A/V decoding chip-sets. Not support their old designs.

Very few player manufacturers are willing to re-code and port SDK's for new chip-set designs over older chip-set designs in order to keep their customers happy!

Now given that some French DVB broadcasters are quite keen to use the DD+ audio format with some of their TV channels it is not uncommon for end-users to capture such broadcasts as .M2TS streams (and burn them to Blu-ray disc). Which is keeping DD+ alive. Indeed, many EU HDTV's support DD+!

Personally, I back up all my HD-DVD's (using DVDFab Passkey) to un-encrypted .EVO files. After that the .EVO files are dropped directly into TSmuxerGUI. The relevent audio streams are selected/deleted. And I manually add the chapter times and save the mux as a "Blu-ray Disk"... After that I open up ImgBurn and save the whole lot as a Blu-ray.ISO file... Job done!

The resulting Blu-ray.ISO file with DD+ audio stream is passed without any issues to my Onkyo TX-NR609 amp via HDMI ;)

[lchiu7]

That sounds like a SigmaDesigns chip-set "firmware" issue...

Could be a similar thing with your Oppo, which is fitted with a Mediatek chip-set :eek:

That said, since the demise of the HD-DVD format, there is very little incentive for A/V chip-set manufacturers to support Dolby Digital Plus

Maybe so but it's interesting that the Oppo can decode the DD+ internally but just can't send out the bitstream data.

Similarly the PCH doesn't seem to be able to send out the bitstream data (my HK AVR shows no audio when the PCH is playing a track with DD+ audio) but it clearly recognises that there is DD+ audio on the track since it displays that information on request.

As for the demise of HD-DVD and DD+ I am not sure that's true. At the last CES at Vegas there was a large emphasis on DD+ by Dolby and I think they are pushing hard for OTA broadcasts to use DD+ as you note is happening in France now.

[lchiu7]

...

Personally, I back up all my HD-DVD's (using DVDFab Passkey) to un-encrypted .EVO files. After that the .EVO files are dropped directly into TSmuxerGUI. The relevent audio streams are selected/deleted. And I manually add the chapter times and save the mux as a "Blu-ray Disk"... After that I open up ImgBurn and save the whole lot as a Blu-ray.ISO file... Job done!

The resulting Blu-ray.ISO file with DD+ audio stream is passed without any issues to my Onkyo TX-NR609 amp via HDMI ;)

This is pretty similar to what I have been doing.

Rip the EVO using DumpHD. Merge them using tonmt (which is just a Java front end to eac3to and tsmuxer) and create a large .ts file with the original (usually VC1) video and whatever audio there was (again usually DD+ but I do have a few with TrueHD).

I then re-encode the video to H.264 using x264 to shrink it and then mux it back with the original audio to a AVCHD format file structure which I burn as UDF 2.5 to a DL DVD.

This plays fine on the Oppo so long as I have the Oppo output PCM rather than DD+ bitstream. It doesn't play on my PS3 for reasons I have yet to work out. In fact sometimes the PS3 recognises the disk as a data disc, not AVCHD.

[MrVideo]

At the last CES at Vegas there was a large emphasis on DD+ by Dolby and I think they are pushing hard for OTA broadcasts to use DD+ as you note is happening in France now.

Good luck with that in the U.S. It will require a FCC rules change for the ATSC spec. Plus, it will require lots of changes to the infrastructure for delivering audio to OTA stations, as well as the stations themselves to add support for 7.1.

Let's see... The CW and CBS use Dolby-E for their audio distribution. Don't know if DD+ is doable with Dolby-E. I doubt that CBS is going to want to spend lots and lots of $$$$ to support DD+ when few viewers will be able to decode it. ABC and NBC use separate stereo audio pairs to send out DD audio, so adding one more pair (stream) to the satellite mux will be easy. But, will the stations be willing to spend the money to replace their DD5.1 encoders with DD+7.1 encoders? Plus, the station's plant would need upgrading to support 8 channels of audio. Doubt it. Because of the way that Fox sends out their programming, they can easily update and not cost the stations a dime.

And none of this includes Cable/DBS delivered programming.

You can't compare France going to DD+ with trying to get the U.S. to go to DD+. Totally different TV distribution infrastructure.