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 SD/HD flag 0x20 = SD. | 0x04 1 byte SD/HD flag 0x20 = SD. | ||
| − | 0x05 1 byte Picture sequence frame count Starts at 0 for | + | 0x05 1 byte Picture sequence frame count Starts at 0 for 1st count, then 3 thereafter. Resets on first P frame after an I-frame. |
0x06 2 byte Offset from Seq. header to first frame. Address of first frame in Sequence minus address of Sequence header. | 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. | 0x08 8 bytes Picture header address. Address of this frame. | ||
Revision as of 16:57, 21 June 2018
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 Starts at 0 for 1st count, then 3 thereafter. Resets on first P frame after an I-frame. 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 0 for first count, then 1 thereafter. Resets after I-frame. 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
