ios - 任何使用EXT-X-MAP标签的m3u8播放列表示例

该标签是在HLS规范的09版草案中引入的，没有任何示例。

   3.4.13.  EXT-X-MAP

   The EXT-X-MAP tag specifies how to obtain the Transport Stream PAT/
   PMT for the applicable media segment.  It applies to every media
   segment that appears after it in the Playlist until the next EXT-X-
   DISCONTINUITY tag, or until the end of the playlist.

   The EXT-X-MAP tag MUST NOT appear unless the Playlist also contains
   the EXT-X-I-FRAMES-ONLY tag.  It is RECOMMENDED that the EXT-X-MAP
   tag only be used for segments whose resource does not start with a
   PAT/PMT.

   Its format is:

   #EXT-X-MAP:<attribute-list>

   The following attributes are defined:

   URI

   The value is a quoted-string containing a URI that identifies a
   resource that contains the Transport Stream PAT/PMT.  This attribute
   is mandatory.

   BYTERANGE

   The value is a quoted-string specifying a byte range into the
   resource identified by the URI attribute.  This range SHOULD contain
   only the Transport Stream PAT/PMT.  The format of the byte range is
   described in Section 3.4.1.  This attribute is optional; if it is not
   present, the byte range is the entire resource indicated by the URI.

   The EXT-X-MAP tag appeared in version 5 of the protocol.

最佳答案

PAT/PMT 初始化长度560的示例，从0中的偏移main.mp4开始

#EXTM3U
#EXT-X-TARGETDURATION:5
#EXT-X-VERSION:7
#EXT-X-MEDIA-SEQUENCE:1
#EXT-X-PLAYLIST-TYPE:VOD
#EXT-X-KEY:METHOD=AES-128,URI="./slow_loading.php?delay=5&resource=crypt0.key",IV=0xbf9840dc7d7fa163301a6c38844d6239
#EXT-X-MAP:URI="main.mp4",BYTERANGE="560@0"
#EXTINF:4.96907,
#EXT-X-BYTERANGE:25312@560
main.mp4
#EXTINF:4.96907,
#EXT-X-BYTERANGE:25440@25872
main.mp4
#EXTINF:4.96907,
#EXT-X-BYTERANGE:25440@51312
main.mp4
#EXTINF:4.96907,
#EXT-X-BYTERANGE:25440@76752
main.mp4
...

Source

关于ios - 任何使用EXT-X-MAP标签的m3u8播放列表示例，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/12906820/