Question

我想获得一个实时m3u8文件，而不是DVR m3u8，因为后者包含太多段（4小时），速度慢，下载和处理也不方便。

例如，天空新闻直播频道

www.youtube.com/watch?v=y60wDzZt8yg

我做了什么：

将用户代理字符串更改为iPad或访问

www.youtube.com/get_video_info?&video_id=y60wDzZt8yg

我可以得到像

这样的东西

manifest.googlevideo.com/api/manifest/hls_variant/playlist_type/DVR/signature/11D1EE619ACDCA91661CB6F42597F96F0C86CC1F.742A7B383F4B10A099B1C7AAEF1E15DCD2F160C6/ipbits/0/fexp/9416126%2C9420452%2C9422596%2C9423459%2C9423661%2C9423662/source/yt_live_broadcast/id/y60wDzZt8yg 0.2 / sver / 3 /键/ yt6 / UPN / 0y8ab4RaX_U /到期/ 1454380402 / sparams / GCR％2Cid％2Cip％2Cipbits％2Citag％2Cmaudio％2Cplaylist_type％2Cpmbypass％2Csource％2Cexpire / IP / 86.172.63.152 / ITAG / 0 /pmbypass/yes/maudio/1/gcr/gb/file/index.m3u8

包含多个分辨率的子m3u8文件。

打开此720p子m3u8文件时

manifest.googlevideo.com/api/manifest/hls_playlist/id/y60wDzZt8yg.2/itag/95/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/gir/yes/dg_shard /eTYwd0R6WnQ4eWcuMg.95/hls_chunk_host/r7---sn-cu-n1qe.googlevideo.com/playlist_type/DVR/pmbypass/yes/gcr/gb/mm/32/mn/sn-cu-n1qe/ms/lv/mv /u/pcm2cms/yes/pl/24/dover/3/fexp/9416126,9420452,9422596,9423459,9423661,9423662/sver/3/upn/0y8ab4RaX_U/mt/1454358580/ip/86.172.63.152/ipbits/0 /到期/ 1454380402 / sparams / IP，ipbits日到期，ID，ITAG，来源，requiressl，ratebypass，住，cmbypass，吉尔，dg_shard，hls_chunk_host，playlist_type，pmbypass，GCR，毫米，MN，MS，MV，pcm2cms，PL /signature/86FCD06C0400556C7F94B21019707B2501F98308.659A34C0F8A2DC70CC8DC411CD5D723C55146DD3/key/dg_yt0/playlist/index.m3u8

它包含最近4个小时的ts段，处理和执行其他操作的速度非常慢。我发现如果我添加查询字符串

？start_seq = 344610

到上面的链接，我可以得到一个更短的m3u8文件，从这个特定的序列开始。但是，除非start_seq参数同时增加，否则文件中的序列数将随时间增加。

相比之下，对于未经频道提供商启用播放的直播视频，YouTube会自动返回一个实时m3u8文件，该文件仅包含少于一分钟的多个序列。链接最明显的区别是

playlist_type / LIVE

而不是

playlist_type / DVR

我想知道我是否可以为其提供商允许播放的YouTube直播流获取LIVE m3u8文件？也许有一些类似于“start_seq = XXX”的参数？或者有一些API可以直接返回实时m3u8链接？非常感谢你。

Answer 1

我不确定这是你想要的，但是使用Charles Proxy和Firefox并在iOS上将用户代理设置为Safari我能够获得带有DVR链接的m3u8播放列表。

HTTP GET: https://manifest.googlevideo.com/api/manifest/hls_variant/upn/wLKv6OL3J1A/sparams/gcr%2Cid%2Cip%2Cipbits%2Citag%2Cplaylist_type%2Cpmbypass%2Cratebypass%2Csource%2Cexpire/expire/1454656348/signature/D1ADDA66092157D87C5DBAB0ECD81AB1D4467291.646FFD703F6ADA2C2E9769F7F3590274C9555148/id/y60wDzZt8yg.2/key/yt6/ip/209.122.120.50/ratebypass/yes/pmbypass/yes/gcr/us/itag/0/ipbits/0/fexp/9405349%2C9408491%2C9418223%2C9419543%2C9420452%2C9421886%2C9422596%2C9422780%2C9423661%2C9424135%2C9424163%2C9425065%2C9425200%2C9425744%2C9426402%2C9427000%2C9427753/playlist_type/DVR/source/yt_live_broadcast/sver/3/keepalive/yes/file/index.m3u8?cpn=OjahYpsGmZq6lLAS

带标题的完整卷曲命令：

curl -H "Host: manifest.googlevideo.com" \
-H "User-Agent: Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_0 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7A341 Safari/528.16" \
-H "Accept: video/webm,video/ogg,video/*;q=0.9,application/ogg;q=0.7,audio/*;q=0.6,*/*;q=0.5" \
-H "Accept-Language: en-US,en;q=0.5" \
-H "Range: bytes=0-" \
-H "Referer: https://m.youtube.com/watch?v=y60wDzZt8yg" \
https://manifest.googlevideo.com/api/manifest/hls_variant/upn/wLKv6OL3J1A/sparams/gcr%2Cid%2Cip%2Cipbits%2Citag%2Cplaylist_type%2Cpmbypass%2Cratebypass%2Csource%2Cexpire/expire/1454656348/signature/D1ADDA66092157D87C5DBAB0ECD81AB1D4467291.646FFD703F6ADA2C2E9769F7F3590274C9555148/id/y60wDzZt8yg.2/key/yt6/ip/209.122.120.50/ratebypass/yes/pmbypass/yes/gcr/us/itag/0/ipbits/0/fexp/9405349%2C9408491%2C9418223%2C9419543%2C9420452%2C9421886%2C9422596%2C9422780%2C9423661%2C9424135%2C9424163%2C9425065%2C9425200%2C9425744%2C9426402%2C9427000%2C9427753/playlist_type/DVR/source/yt_live_broadcast/sver/3/keepalive/yes/file/index.m3u8?cpn=OjahYpsGmZq6lLAS

此链接采用cpn参数作为频道隐私号。这是附加到URL请求的参数，我认为该参数是可选的。

如何获取实时m3u8文件而不是YouTube直播流的DVR m3u8文件？

1 个答案: