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+---- Thread: Win Dolby Digital Plus Bitstream Output - Handling High Audio Frame Rate (/showthread.php?tid=351405)
Dolby Digital Plus Bitstream Output - Handling High Audio Frame Rate - Krobar - 2020-02-01
Hi All,
I'm trying to understand a fairly wide ranging DD+ incompatibility between Kodi running HDDVD DD+ streams and various AVRs/Prepros. All of the AVRs work when playing the original disks as Bitstream using an actual HDDVD player. The Denon and Marantz I tested can also play the Kodi output; the Datasat, Emotiva and Arcam all fail to play the high bit rate DD+ streams when using Kodi.
Here is a sample of an HDDVD stream which has the problem:
https://drive.google.com/open?id=1lVRBsvpTPZoJr_EiGZHpBFbsNHRLKtkw
It is obvious from the Denon/Marantz AVRs working that manufacturers can work around this but it also seems Kodi is doing something a little differently to other players and streaming devices which why I'm asking the question in the title.
The issue with all of the DD+ tracks that wont play is the audio frame rate exceeds the 31.25 norm, according to Wikipedia the audio frame rates within the HDDVD files are within spec.
Here are my results:
HDDVD:
Liar Liar - 5.1 - 1536Kbit - 187.5FPS (256 SPF) - Fails
Liar Liar - 2.0 - 192Kbit - 31.25FPS (1536 SPF) - OK
Lethal Weapon 2 - 5.1 - 640Kbit - 62.5 FPS (768 SPF) - Fails
Led Zeppelin - Song Remains The Same - 192Kbit- 2.0 - 31.25FPS (1536 SPF) - OK
Yes- Live At Montreux - 5.1 - 768Kbit - 62.5 FPS (768 SPF) - Fails
Bluray:
Inside Out (French) - 7.1 - 896Kbit - 31.25FPS (1536 SPF) - OK
Secret Life Of Pets (Spanish) - 7.1 - 768Kbit - 31.25FPS (1536 SPF) - OK
BlacKkKlansman (French) - 7.1 - 768Kbit - 31.25FPS (1536 SPF) - OK
Finding Dory (French) - 7.1 - 896Kbit - 31.25FPS (1536 SPF) - OK
Dolby Safari Demo - 7.1 - 1664Kbit - 31.25FPS (1536 SPF) - OK
Dolby Leaf Demo - 5.1 + Atmos - 448Kbit - 31.25FPS (1536 SPF) - OK
Can anyone who knows about this low level decoding stuff comment on where they think the issue may lie? Is it likely the HDDVD players reform the stream to use larger samples? (I'm guessing Kodi has some sort of support in order for it work with some receivers)
RE: Dolby Digital Plus Bitstream Output - IEC 60958 or IEC 61937? - PatK - 2020-02-01
I think there is more knowledgeable people in the music section that might be able to shine a light on this issue.
RE: Dolby Digital Plus Bitstream Output - Handling High Audio Frame Rate - Krobar - 2020-02-11
I have done some further research with the help of others on the AVSForum and this appears to be a bug which is unique to Kodi. Test results here:
https://www.avsforum.com/forum/26-home-theater-computers/3120378-hddvd-dd-sample-mkv-can-your-setup-bitstream-file.html
Windows Media player and Power DVD Ultra have no compatibility issues bit streaming the audio on these files. Some Denon/Marantz receivers will work with Kodi bits treaming. Onkyo, Arcam, some Denon and Pioneer all fail to stream lower SPF DD+ files with Kodi.
RE: Dolby Digital Plus Bitstream Output - Handling High Audio Frame Rate - Karellen - 2020-02-11
This does not belong in music. I'll move you to OS Independent forum.
Please provide a Debug Log which captures the issue.
RE: Dolby Digital Plus Bitstream Output - Handling High Audio Frame Rate - Krobar - 2020-11-12
I posted alot more detail here:
https://github.com/xbmc/xbmc/issues/17427
The new info I have is that when using a 256 samples per frame EAC3 stream from Kodi the following is seen with the HDMI stream:
1 Good Sync Frame
5 Sync Frames filled with 0s
1 Good Sync Frame
5 Sync Frames filled with 0s
As described above other Windows software can stream these over HDMI so it appears to be a Kodi or maybe FFMPEG issue.