Source for high-bit rate HDTV network programming w/DTS - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 9 Old 07-07-2013, 04:08 PM - Thread Starter
Member
 
sjblakey314's Avatar
 
Join Date: Jan 2008
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I hope this is the correct forum for my question.

I recently noticed that, in March, somebody uploaded a very high bitrate transport stream for an episode of NBC's Law & Order: SVU. Curious about its quality and origin, I just downloaded the first few minutes of the 8GB(!) file. The video codec for the 44 min episode is AVC, and the audio is 6-ch. DTS (1510 kbps). I have a few questions that hopefully someone can answer:

What could be the source of this .ts?

It doesn't seem to be blu-ray, as the NBC "peacock" icon appears in the bottom left corner of the screen and the "TV 14 DLV" icon in the top right (at the beginning of the ep.) Also, the bitrate seems to be far too high for OTA HDTV. By my math the overall bitrate is roughly 38 mbits - doesn't OTA HD max out around 14-18 mbps?. Also, I was under the impression that Dolby AC3 at 384 or 448kbps was typical for broadcast HD - not 1510 kbits DTS. Could this be from a cable or fiber provider like FIOS? But it seems strange that they would dedicate one entire QAM to NBC? Also what about the use of AVC? I though MPEG-2 was the standard for broadcast HD?

I'm wondering where one would get (legit) access to network TV content of this quality as it seems to far exceed that of Netflix, OTA HD, or Rogers cable (the cable co. where I live)?

Comments would be appreciated. I've posted the technical specs for this file below.

Regards,

Steven


P.S. I'm hoping we can side-step any discussion of the legality/morality of uploading/downloading copyright material. I'm just interested in finding out how the original uploader got access to such high-quality content.


General
ID : 1 (0x1)
Complete name : F:\sjb-downloads temp\Law & Order Special Victims Unit S14E16 1080i HDTV DTS-HD H.264-TrollHD.ts
Format : MPEG-TS
File size : 7.94 GiB
Overall bit rate mode : Variable
Maximum Overall bit rate : 35.5 Mbps

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 : 4 frames
Format settings, GOP : M=4, N=32
Codec ID : 27
Bit rate mode : Variable
Maximum bit rate : 40.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Color primaries : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
Transfer characteristics : BT.709-5, BT.1361
Matrix coefficients : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177

Audio
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format : DTS
Format/Info : Digital Theater Systems
Muxing mode : Stream extension
Codec ID : 134
Bit rate mode : Constant
Bit rate : 1 510 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy

Text #1
ID : 4113 (0x1011)-CC1
Menu ID : 1 (0x1)
Format : EIA-608
Muxing mode : SCTE 128 / DTVCC Transport
Muxing mode, more info : Muxed in Video #1
Bit rate mode : Constant
Stream size : 0.00 Byte (0%)

Text #2
ID : 4113 (0x1011)-1
Menu ID : 1 (0x1)
Format : EIA-708
Muxing mode : SCTE 128 / DTVCC Transport
Muxing mode, more info : Muxed in Video #1
Bit rate mode : Constant
Stream size : 0.00 Byte (0%)
sjblakey314 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 Old 07-08-2013, 02:40 AM
AVS Special Member
 
tenthplanet's Avatar
 
Join Date: Feb 2006
Location: North of Mexico, South of Oregon, Not as far east as Vegas
Posts: 1,249
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 22 Post(s)
Liked: 124
Someone may have a gotten a master and made there own copy, notice under the audio is says lossy which means the DTS is akin to what you would get on a dvd ( or possibly and HD-DVD) and not a blu ray. Someone might be in trouble over at NBCUniversal (no I don't work for them). Where did you find this file anyway. It's highly irregular.

"Bring out yer dead!".."Wait I'm not dead yet!"..(Sound Austrian here) "WRONG !!" (You know what happens next..)
tenthplanet is offline  
post #3 of 9 Old 07-08-2013, 02:43 AM
AVS Special Member
 
tenthplanet's Avatar
 
Join Date: Feb 2006
Location: North of Mexico, South of Oregon, Not as far east as Vegas
Posts: 1,249
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 22 Post(s)
Liked: 124
Aha, someone may have tapped off a copy off the network feed at a TV station also.

"Bring out yer dead!".."Wait I'm not dead yet!"..(Sound Austrian here) "WRONG !!" (You know what happens next..)
tenthplanet is offline  
post #4 of 9 Old 07-08-2013, 06:31 AM
AVS Special Member
 
Wendell R. Breland's Avatar
 
Join Date: Sep 1999
Location: North Carolina
Posts: 4,356
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Liked: 52
May have been a satellite network feed or a OTA capture that has been transcoded or ....
Wendell R. Breland is offline  
post #5 of 9 Old 07-08-2013, 07:42 AM - Thread Starter
Member
 
sjblakey314's Avatar
 
Join Date: Jan 2008
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I found it on the Usenet: alt.binaries.hdtv

I didn't download the entire file, being mindful of my monthly bandwidth cap; however the image quality of the first few minutes was beautiful - much better than the same show on my Rogers HD DVR.
sjblakey314 is offline  
post #6 of 9 Old 07-14-2013, 01:40 PM
Member
 
ludacrisvp's Avatar
 
Join Date: Apr 2006
Posts: 39
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Sounds like what I would get using Firewire (IEEE 1394) to record live TV from my cable box when I was using charter.
The firewire output transmits the mpeg transport stream to be recorded by HD VCRs. It is really easy to do with OSX but is also possible with Windows.
ludacrisvp is offline  
post #7 of 9 Old 07-16-2013, 08:54 AM
Advanced Member
 
mtallent's Avatar
 
Join Date: Nov 2003
Location: Cecilia,KY
Posts: 863
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 12
I am pretty sure the source is Blu-Ray as I know of no satellite feed that used DTS sound. I was not sure why it was 1080i as I thought the show was filmed, but I looked it up and since season 13 it has be shot in video using HDCAM so it could be interlaced at 29.97. The file size is consistent with Blu-Ray file sizes for 42-43 minute TV productions. The DTS HD Master sound track also contains the 1510 kbps lossy track for compatibility. and could be used in place of the loss less track.

Mike T
mtallent is offline  
post #8 of 9 Old 07-16-2013, 10:25 AM
Advanced Member
 
mtallent's Avatar
 
Join Date: Nov 2003
Location: Cecilia,KY
Posts: 863
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 12
Upon further review I see the posting was about 30 days after the original air date so it is unlikely to be Blu-Ray source. Must be from network feed, but most are encrypted now so someone may have a source from a down link site to obtain the raw data feed.

Mike T
mtallent is offline  
post #9 of 9 Old 10-14-2013, 10:27 PM
AVS Special Member
 
StinDaWg's Avatar
 
Join Date: Feb 2006
Posts: 3,386
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 97 Post(s)
Liked: 121
It's from the NBC backhaul feed. Most shows are originally mastered in H.264 and then transcoded to a lower bitrate MPEG2 for broadcast. As to how they got this, the short version is that someone set up a satellite and then intercepted the signal before it gets to the local affiliate. It was either not encrypted or the encryption was cracked in the process.

TrollHD is a group known for getting the backhaul for a lot of shows. They did this for Hannibal and a few episodes of Community too.
StinDaWg is offline  
Reply Video Download Services & Hardware

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off