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2004 Jan 26 29
Philips Semiconductors Product specification
MPEG-2 video and MPEG-audio/AC-3
audio encoder with multiplexer
SAA6752HS
Table 7 Audio metabytes data
Note
1. This is the same value as used to generate the PTS value.
BYTE
(HEX)
NAME
LSB/
MSB
BIT DESCRIPTION
00 identification 0 to 7 AAH; audio
01 flags 0 reserved
1 ‘terminated audio flag’; this flag is only set at the end of a
recording session and indicates that this sector is not completely
filled with audio data
2 ‘synchronization flag’; indicates that the audio data in the sector is
related in time to the beginning of a Video Object Unit (VOBU)
3 reserved
4 reserved
5 to 7 audio pack type:
000: MPEG-1 layer 2 or MPEG-2 without extension
010: MPEG-2 with extension
011: DDCE
100: DTS-1 (512 samples/frame)
101: reserved
110: reserved
111: LPCM 16-bit stereo 48 kHz
02 data length LSB 0 to 7 amount of non-stuffing bytes minus one
03 MSB 0 to 7
04 time stamp LSB 0 to 7 The value of the STC at the moment that the first byte of the first
frame arrived at the input. Only 32 bits are used; note 1.
05 0 to 7
06 0 to 7
07 MSB 0 to 7
08 reserved 0 to 7 00
09 frame start count 0 to 7 the amount of frame starts in the sector
0A first frame position LSB 0 to 7 position (in bytes) of the first frame in the sector
0B MSB 0 to 7
0C last frame position LSB 0 to 7 position (in bytes) of the last frame in the sector
0D MSB 0 to 7
0E reserved 0 to 7 00
0F reserved 0 to 7 00