Difference between revisions of "NTS File Format"
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0x03 1 byte Frame Type 0x01 = I-Frame, 0x02 = P-Frame, 0x03 = B-Frame. | 0x03 1 byte Frame Type 0x01 = I-Frame, 0x02 = P-Frame, 0x03 = B-Frame. | ||
0x04 1 byte HD Flag 0x30 = HD. | 0x04 1 byte HD Flag 0x30 = HD. | ||
| − | 0x05 1 byte Picture sequence frame count. Starts at zero for first count only, then starts at 1 after that. Consequently the last 0x08 entry of each count sequence contains the address of first SEI of the next sequence. | + | 0x05 1 byte Picture sequence frame count. Starts at zero for first count only, then starts at 1 after that. Consequently the last |
| + | 0x08 entry of each count sequence contains the address of first SEI of the next sequence. | ||
0x06 2 bytes Offset from PicParamSet to first SEI. Address of first SEI in sequence minus address of last PicParamSet. | 0x06 2 bytes Offset from PicParamSet to first SEI. Address of first SEI in sequence minus address of last PicParamSet. | ||
0x08 8 bytes SEI address. Address of SEI preceding the frame. | 0x08 8 bytes SEI address. Address of SEI preceding the frame. | ||
Revision as of 13:19, 24 November 2014
MPEG2 - 32 byte entries
Offset Purpose Value
--------------------------------------------------------------------------------------------------------------
0x00 3 bytes Offset from Seq. header to current frame. Address of this frame minus address of Sequence header.
0x03 1 byte Frame Type 0x01 = I-Frame, 0x02 = P-Frame, 0x03 = B-Frame.
0x04 1 byte SD/HD flag 0x20 = SD.
0x05 1 byte Picture sequence frame count 0 to 12 (13 frames) for first count only, then 3 to 14 (12 frames) after that.
0x06 2 byte Offset from Seq. header to first frame. Address of first frame in Sequence minus address of Sequence header.
0x08 8 bytes Picture header address. Address of this frame.
0x10 4 bytes Presentation TimeStamp (PTS) The first 32 bits of PES PTS.
0x14 4 bytes Frame size. Address of next frame minus address of this frame.
0x18 4 bytes Played Time Played time in milliseconds.
0x1C 4 bytes Unused N/A
H264 - 64 byte entries
Offset Purpose Value
--------------------------------------------------------------------------------------------------------------
0x00 3 bytes Offset from PicParamSet to current SEI. Address of SEI preceding current frame minus address of last PicParamSet.
0x03 1 byte Frame Type 0x01 = I-Frame, 0x02 = P-Frame, 0x03 = B-Frame.
0x04 1 byte HD Flag 0x30 = HD.
0x05 1 byte Picture sequence frame count. Starts at zero for first count only, then starts at 1 after that. Consequently the last
0x08 entry of each count sequence contains the address of first SEI of the next sequence.
0x06 2 bytes Offset from PicParamSet to first SEI. Address of first SEI in sequence minus address of last PicParamSet.
0x08 8 bytes SEI address. Address of SEI preceding the frame.
0x10 4 bytes Presentation TimeStamp (PTS) The first 32 bits of PES PTS.
0x14 4 bytes Frame size. Address of the AUD immediately after frame minus address of SEI preceding the frame.
0x18 4 bytes Played Time. Played time in milliseconds for timebar display.
0x1C 4 bytes Unused N/A
0x20 4 bytes HeaderEndSize Address of SEI minus address of last SeqParamSet
0x24 4 bytes ExtDistance Address of last PicParamSet minus address of last SeqParamSet
0x28 24 bytes Unused N/A
All values are in reverse byte order (little endian)
File analysis by raydon
