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mp3 audio notes.md

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+timestamp id3 tag needed to avoid the overlap delay:
+
+https://www.wowza.com/community/t/id3-priv-tag-in-aac-chunks-for-hls-streaming-is-it-necessary/34473
+
+
+https://datatracker.ietf.org/doc/html/draft-pantos-http-live-streaming#section-6.2.4
+
+https://datatracker.ietf.org/doc/html/draft-pantos-http-live-streaming#section-3.4
+A Packed Audio Segment has no Media Initialization Section.
+
+   Each Packed Audio Segment MUST signal the timestamp of its first
+   sample with an ID3 PRIV tag [ID3] at the beginning of the segment.
+   The ID3 PRIV owner identifier MUST be
+   "com.apple.streaming.transportStreamTimestamp".  The ID3 payload MUST
+   be a 33-bit MPEG-2 Program Elementary Stream timestamp expressed as a
+   big-endian eight-octet number, with the upper 31 bits set to zero.
+   Clients SHOULD NOT play Packed Audio Segments without this ID3 tag.
+
+mp3 options:
+-write_xing 0/1
+-id3v2_version 3
+-write_id3v1 0/1
+
+
+https://patchwork.ffmpeg.org/project/ffmpeg/patch/20180112211305.5812-1-rshaffer@tunein.com/
+patch for ffmpeg to add ability to set/retrieve priv tags
+