问题
Just wondering if that's possible or not- when I copy the video URL into YouTube-dl it spits out
[https @ 0x7fc351416080] inflate return value: -3, incorrect header check
Last message repeated 15 times
After that it spits out of couple lines of red text that doesn't seem to want to copy in properly, so I took a snippet
Does anyone know if this is possible?
回答1:
I'll be using this Live Event as an example:
https://www.youtube.com/watch?v=6aXR-SL5L2o
First, list the formats for the video:
$ ~ youtube-dl --list-formats https://www.youtube.com/watch\?v\=6aXR-SL5L2o
[youtube] 6aXR-SL5L2o: Downloading webpage
[youtube] 6aXR-SL5L2o: Downloading video info webpage
[youtube] 6aXR-SL5L2o: Extracting video information
[youtube] 6aXR-SL5L2o: Downloading formats manifest
[youtube] 6aXR-SL5L2o: Downloading MPD manifest
[info] Available formats for 6aXR-SL5L2o:
format code extension resolution note
91 mp4 144p HLS , h264, aac @ 48k
92 mp4 240p HLS , h264, aac @ 48k
93 mp4 360p HLS , h264, aac @128k
94 mp4 480p HLS , h264, aac @128k
95 mp4 720p HLS , h264, aac @256k (best)
Pick the format you wish to download, and fetch the HLS m3u8 URL of the video from the manifest. I'll be using 95 mp4 720p HLS , h264, aac @256k for this example:
➜ ~ youtube-dl -f 95 -g https://www.youtube.com/watch\?v\=6aXR-SL5L2o
https://manifest.googlevideo.com/api/manifest/hls_playlist/id/6aXR-SL5L2o.1/itag/95/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/itag%3D140/sgovp/itag%3D136/hls_chunk_host/r16---sn-ab5l6ne7.googlevideo.com/gcr/us/playlist_type/DVR/mm/32/mn/sn-ab5l6ne7/ms/lv/mv/u/pl/17/dover/3/fexp/9416126,9416891,9419451,9422596,9423554,9427790,9428193,9428398,9428974,9429011,9431012,9431164,9432683,9433096,9433946,9434343,9434833,9434847,9435186,9435741/upn/UNF1TiBtavY/sver/3/mt/1462544320/ip/64.125.177.124/ipbits/0/expire/1462565936/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,gcr,playlist_type,mm,mn,ms,mv,pl/signature/67EC57CB964D9D944DE2E1AB40F0E496DA2C73B4.8FBEF1974DF9DB1E614B9C96BA0FF8E52076B04F/key/dg_yt0/playlist/index.m3u8
Now that you have the HLS playlist, you can open this URL in VLC and save it using "Record", or write a small ffmpeg command:
ffmpeg -i \
https://manifest.googlevideo.com/api/manifest/hls_playlist/id/6aXR-SL5L2o.1/itag/95/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/itag%3D140/sgovp/itag%3D136/hls_chunk_host/r16---sn-ab5l6ne7.googlevideo.com/gcr/us/playlist_type/DVR/mm/32/mn/sn-ab5l6ne7/ms/lv/mv/u/pl/17/dover/3/fexp/9416126,9416891,9419451,9422596,9423554,9427790,9428193,9428398,9428974,9429011,9431012,9431164,9432683,9433096,9433946,9434343,9434833,9434847,9435186,9435741/upn/UNF1TiBtavY/sver/3/mt/1462544320/ip/64.125.177.124/ipbits/0/expire/1462565936/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,gcr,playlist_type,mm,mn,ms,mv,pl/signature/67EC57CB964D9D944DE2E1AB40F0E496DA2C73B4.8FBEF1974DF9DB1E614B9C96BA0FF8E52076B04F/key/dg_yt0/playlist/index.m3u8 \
-c copy output.ts
回答2:
There is no need to pass anything to ffmpeg you can just grab the desired format, in this example, it was the "95" format.
So once you know that it is the 95, you just type:
youtube-dl -f 95 https://www.youtube.com/watch\?v\=6aXR-SL5L2o
that is to say:
youtube-dl -f <format number> <url>
It will begin generating on the working directory a <somename>.<probably mp4>.part which is the partially downloaded file, let it go and just press <Ctrl-C> to stop the capture.
The file will still be named <something>.part, rename it to <whatever>.mp4 and there it is...
The ffmpeg code:
ffmpeg -i $(youtube-dl -f <format number> -g <url>) -copy <file_name>.ts
also worked for me, but sound and video got out of sync, using just youtube-dl seemed to yield a better result although it too uses ffmpeg.
The downside of this approach is that you cannot watch the video while downloading, well you can open yet another FF or Chrome, but it seems that mplayer cannot process the video output till youtube-dl/ffmpeg are running.
回答3:
You can also type this :
URL=https://www.youtube.com/watch?v=6aXR-SL5L2o
youtube-dl -f 95 --hls-prefer-native $URL
For some other websites with m3u streaming content where this does not work, you can try something like this :
$ youtube-dl -F https://www.arte.tv/fr/videos/078132-001-A/cosmos-une-odyssee-a-travers-l-univers/ | grep m3u
HLS_XQ_2 m3u8 1280x720 VA-STA, Allemand 2200k
HLS_XQ_1 m3u8 1280x720 VF-STF, Français 2200k
$ youtube-dl -gf HLS_XQ_1 --get-filename https://www.arte.tv/fr/videos/078132-001-A/cosmos-une-odyssee-a-travers-l-univers/
https://arteptweb-vh.akamaihd.net/i/am/ptweb/078000/078100/078132-001-A_0_VF-STF_AMM-PTWEB_XQ.1AhsDgVG20.smil/master.m3u8
Cosmos_une_odyssee_a_travers_l_univers__HLS_XQ_1__078132-001-A.m3u8
$ youtube-dl -F https://arteptweb-vh.akamaihd.net/i/am/ptweb/078000/078100/078132-001-A_0_VF-STF_AMM-PTWEB_XQ.1AhsDgVG20.smil/master.m3u8
[generic] master: Requesting header
[generic] master: Downloading webpage
[generic] master: Downloading m3u8 information
[info] Available formats for master:
format code extension resolution note
61 mp4 audio only 61k , mp4a.40.2
419 mp4 384x216 419k , avc1.66.30, mp4a.40.2
923 mp4 640x360 923k , avc1.77.30, mp4a.40.2
1737 mp4 720x406 1737k , avc1.77.30, mp4a.40.2
2521 mp4 1280x720 2521k , avc1.77.30, mp4a.40.2 (best)
$ youtube-dl --hls-prefer-native -f 1737 https://arteptweb-vh.akamaihd.net/i/am/ptweb/078000/078100/078132-001-A_0_VF-STF_AMM-PTWEB_XQ.1AhsDgVG20.smil/master.m3u8 -o Cosmos_une_odyssee_a_travers_l_univers__HLS_XQ_1__078132-001-A.mp4
[generic] master: Requesting header
[generic] master: Downloading webpage
[generic] master: Downloading m3u8 information
[hlsnative] Downloading m3u8 manifest
[hlsnative] Total fragments: 257
[download] Destination: Cosmos_une_odyssee_a_travers_l_univers__HLS_XQ_1__078132-001-A.mp4
[download] 0.9% of ~731.27MiB at 624.95KiB/s ETA 13:13
....
BTW : I have added --hls-prefer-native in my ~/.config/youtube-dl.conf so I don't have to type it every time :)
来源：https://stackoverflow.com/questions/37040798/how-do-you-use-youtube-dl-to-download-live-streams-that-are-live