Add useful links to readmes

pkg/README.md

@@ -2,4 +2,7 @@
 
 - https://www.wowza.com/blog/streaming-protocols
 - https://vimeo.com/blog/post/rtmp-stream/
-- https://sanjeev-pandey.medium.com/understanding-the-mpeg-4-moov-atom-pseudo-streaming-in-mp4-93935e1b9e9a
+- https://sanjeev-pandey.medium.com/understanding-the-mpeg-4-moov-atom-pseudo-streaming-in-mp4-93935e1b9e9a
+- [Android Supported media formats](https://developer.android.com/guide/topics/media/media-formats)
+- [THEOplayer](https://www.theoplayer.com/test-your-stream-hls-dash-hesp)
+- [How Generate DTS/PTS](https://www.ramugedia.com/how-generate-dts-pts-from-elementary-stream)

pkg/aac/README.md

@@ -0,0 +1,20 @@
+## AAC-LD and AAC-ELD
+
+Codec | Rate | QuickTime | ffmpeg | VLC
+------|------|-----------|--------|----
+AAC-LD  | 8000  | yes | no  | no
+AAC-LD  | 16000 | yes | no  | no
+AAC-LD  | 22050 | yes | yes | no
+AAC-LD  | 24000 | yes | yes | no
+AAC-LD  | 32000 | yes | yes | no
+AAC-ELD | 8000  | yes | no  | no
+AAC-ELD | 16000 | yes | no  | no
+AAC-ELD | 22050 | yes | yes | yes
+AAC-ELD | 24000 | yes | yes | yes
+AAC-ELD | 32000 | yes | yes | yes
+
+## Useful links
+
+- [4.6.20 Enhanced Low Delay Codec](https://csclub.uwaterloo.ca/~ehashman/ISO14496-3-2009.pdf)
+- https://stackoverflow.com/questions/40014508/aac-adts-for-aacobject-eld-packets
+- https://code.videolan.org/videolan/vlc/-/blob/master/modules/packetizer/mpeg4audio.c

pkg/mp4/README.md

@@ -21,3 +21,4 @@ Stream #0:0(eng): Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, progressiv
 - https://stackoverflow.com/questions/32152090/encode-h265-to-hvc1-codec
 - https://jellyfin.org/docs/general/clients/codec-support.html
 - https://github.com/StaZhu/enable-chromium-hevc-hardware-decoding
+- https://developer.mozilla.org/ru/docs/Web/Media/Formats/codecs_parameter