youtube - 您如何使用 youtube-dl 下载实时流(直播)？

Question

只是想知道这是否可能 - 当我将视频 URL 复制到 YouTube-dl 时，它会吐出来

[https @ 0x7fc351416080] inflate return value: -3, incorrect header check
Last message repeated 15 times

之后它吐出几行似乎不想正确复制的红色文本，所以我拿了一个片段

有谁知道这是否可能？

Answer 1

我将使用来自 NASA TV 的这个现场事件作为示例:
https://www.youtube.com/watch?v=21X5lGlDOfg
首先，列出视频的格式:

youtube-dl --list-formats https://www.youtube.com/watch\?v\=21X5lGlDOfg

[youtube] 21X5lGlDOfg: Downloading webpage
[youtube] 21X5lGlDOfg: Downloading m3u8 information
[youtube] 21X5lGlDOfg: Downloading MPD manifest
[info] Available formats for 21X5lGlDOfg:
format code  extension  resolution note
91           mp4        256x144    HLS  197k , avc1.42c00b, 30.0fps, mp4a.40.5@ 48k
92           mp4        426x240    HLS  338k , avc1.4d4015, 30.0fps, mp4a.40.5@ 48k
93           mp4        640x360    HLS  829k , avc1.4d401e, 30.0fps, mp4a.40.2@128k
94           mp4        854x480    HLS 1380k , avc1.4d401f, 30.0fps, mp4a.40.2@128k
300          mp4        1280x720   3806k , avc1.4d4020, 60.0fps, mp4a.40.2 (best)

选择您要下载的格式，然后从 list 中获取视频的 HLS m3u8 URL。我将使用 94 mp4 854x480 HLS 1380k , avc1.4d401f, 30.0fps, mp4a.40.2@128k对于这个例子:

youtube-dl -f 94 -g https://www.youtube.com/watch\?v\=21X5lGlDOfg
https://manifest.googlevideo.com/api/manifest/hls_playlist/expire/1592099895/ei/1y_lXuLOEsnXyQWYs4GABw/ip/81.190.155.248/id/21X5lGlDOfg.3/itag/94/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D135/hls_chunk_host/r5---sn-h0auphxqp5-f5fs.googlevideo.com/playlist_duration/30/manifest_duration/30/vprv/1/playlist_type/DVR/initcwndbps/8270/mh/N8/mm/44/mn/sn-h0auphxqp5-f5fs/ms/lva/mv/m/mvi/4/pl/16/dover/11/keepalive/yes/beids/9466586/mt/1592078245/disable_polymer/true/sparams/expire,ei,ip,id,itag,source,requiressl,ratebypass,live,goi,sgoap,sgovp,playlist_duration,manifest_duration,vprv,playlist_type/sig/AOq0QJ8wRgIhAM2dGSece2shUTgS73Qa3KseLqnf85ca_9u7Laz7IDfSAiEAj8KHw_9xXVS_PV3ODLlwDD-xfN6rSOcLVNBpxKgkRLI%3D/lsparams/hls_chunk_host,initcwndbps,mh,mm,mn,ms,mv,mvi,pl/lsig/AG3C_xAwRQIhAJCO6kSwn7PivqMW7sZaiYFvrultXl6Qmu9wppjCvImzAiA7vkub9JaanJPGjmB4qhLVpHJOb9fZyhMEeh1EUCd-3Q%3D%3D/playlist/index.m3u8

请注意，链接可能不同，并且包含过期时间戳，在本例中为 1592099895(约 6 小时)。
现在你有了 HLS 播放列表，你可以在 VLC 中打开这个 URL 并使用“记录”保存它，或者编写一个小的 ffmpeg 命令:

ffmpeg -i \
https://manifest.googlevideo.com/api/manifest/hls_playlist/expire/1592099895/ei/1y_lXuLOEsnXyQWYs4GABw/ip/81.190.155.248/id/21X5lGlDOfg.3/itag/94/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D135/hls_chunk_host/r5---sn-h0auphxqp5-f5fs.googlevideo.com/playlist_duration/30/manifest_duration/30/vprv/1/playlist_type/DVR/initcwndbps/8270/mh/N8/mm/44/mn/sn-h0auphxqp5-f5fs/ms/lva/mv/m/mvi/4/pl/16/dover/11/keepalive/yes/beids/9466586/mt/1592078245/disable_polymer/true/sparams/expire,ei,ip,id,itag,source,requiressl,ratebypass,live,goi,sgoap,sgovp,playlist_duration,manifest_duration,vprv,playlist_type/sig/AOq0QJ8wRgIhAM2dGSece2shUTgS73Qa3KseLqnf85ca_9u7Laz7IDfSAiEAj8KHw_9xXVS_PV3ODLlwDD-xfN6rSOcLVNBpxKgkRLI%3D/lsparams/hls_chunk_host,initcwndbps,mh,mm,mn,ms,mv,mvi,pl/lsig/AG3C_xAwRQIhAJCO6kSwn7PivqMW7sZaiYFvrultXl6Qmu9wppjCvImzAiA7vkub9JaanJPGjmB4qhLVpHJOb9fZyhMEeh1EUCd-3Q%3D%3D/playlist/index.m3u8 \
-c copy output.ts