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Old 6th August 2009, 09:48   #9167  |  Link
tebasuna51
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Join Date: Feb 2005
Location: Spain
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Quote:
Originally Posted by odin24 View Post
I tried searching, but no luck, I even searched through google. I was curious as to what exactly is "DTS zero padding"?.
These 4 dts files (20 sec long) was encoded with Surcode, the padded ones add 0's bytes after the core frame to reach the 2048 boundary (to easy write and search on hardware)

Code:
File ........: D:\Test\dts\Jap_padD.dts ... 3840000 bytes
----------------------------------------- First Frame Info
Primary Frame Byte Size .....: 2012 ( 2013 bytes/frame)
Transmission Bit Rate .......: 24 (1536 Kb/s)
...
--------------------------------------------- Revised Info
Total Frames ......: 1875
Duration ..........: 20 seconds. ( 0 h. 0 m. 20 s.)
Pad Bytes min./max.: 35 / 35 (bytes between frames)
------------------------------------------------- End Info

Real frame = Core frame + pad bytes = 2013 + 35 = 2048
Real bitrate = 3840000 x 8 / 20 = 1536 Kb/s
=================================================================

File ........: D:\Test\dts\dJap_cptD.dts ... 3774375 bytes
----------------------------------------- First Frame Info
Primary Frame Byte Size .....: 2012 ( 2013 bytes/frame)
Transmission Bit Rate .......: 24 (1536 Kb/s)
...
--------------------------------------------- Revised Info
Total Frames ......: 1875
Duration ..........: 20 seconds. ( 0 h. 0 m. 20 s.)
------------------------------------------------- End Info

Real Bitrate = 3774375 x 8 / 20 = 1509.75 Kb/s
=================================================================

File ........: D:\Test\dts\Jap_pad7.dts ... 3840000 bytes
----------------------------------------- First Frame Info
Primary Frame Byte Size .....: 1005 ( 1006 bytes/frame)
Transmission Bit Rate .......: 15 (768 Kb/s)
...
--------------------------------------------- Revised Info
Total Frames ......: 1875
Duration ..........: 20 seconds. ( 0 h. 0 m. 20 s.)
Pad Bytes min./max.: 1042 / 1042 (bytes between frames)
------------------------------------------------- End Info

Real frame = Core frame + pad bytes = 1006 + 1042 = 2048
Real bitrate = 3840000 x 8 / 20 = 1536 Kb/s
=================================================================

File ........: D:\Test\dts\Jap_cpt7.dts ... 1886250 bytes
----------------------------------------- First Frame Info
Primary Frame Byte Size .....: 1005 ( 1006 bytes/frame)
Transmission Bit Rate .......: 15 (768 Kb/s)
...
--------------------------------------------- Revised Info
Total Frames ......: 1875
Duration ..........: 20 seconds. ( 0 h. 0 m. 20 s.)
------------------------------------------------- End Info

Real bitrate = 1886250 x 8 / 20 = 754.5 Kb/s
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