Use of element instance tag in AAC |
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Use of element instance tag in AAC |
 Jun 29 2012, 16:26
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#1
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Group: Members Posts: 56 Joined: 19-January 11 Member No.: 87451  |
Hi experts,
In AAC while reading syntactic elements, the first 4 bits read is element_instance_tag. Actually what is its use?? Please help Regards Pratheek |
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Jun 29 2012, 16:49
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#2
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 Winamp Developer Group: Developer Posts: 662 Joined: 17-July 05 From: Ashburn, VA Member No.: 23375 |
It was meant to be used as a method of simulcasting. I'm not aware of any actual use of it (perhaps some private implementations?).
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Jun 29 2012, 17:18
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#3
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Group: Members Posts: 73 Joined: 14-December 06 Member No.: 38681 |
QUOTE (benski @ Jun 29 2012, 19:49)  It was meant to be used as a method of simulcasting. I'm not aware of any actual use of it (perhaps some private implementations?). what is simulcasting? I can recall some RFC that suggests fragmentation of large AAC frames over few RTP packets using syntactic element boundaries |
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Jun 30 2012, 12:59
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#4
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Group: Members Posts: 56 Joined: 19-January 11 Member No.: 87451 |
Is it used with multi channel AAC?? Because with stereo and mono streams, we never use this element_instance_tag after reading. For coupling we specify the element_instance_tag of target channels.. is it used for that purpose??
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Lo-Fi Version | Time is now: 23rd May 2013 - 16:44 |
