EXT-X-MAP टैग

Question

का उपयोग करने के लिए कोई भी m3u8 प्लेलिस्ट उदाहरण एचएलएस स्पेक के ड्राफ्ट -09 में किसी भी उदाहरण के बिना टैग पेश किया गया है।

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. 

Answer 1

PAT के लिए उदाहरण/पीएमटी initalization लंबाई 560 पर शुरू main.mp4

#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 
... 

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