Thema: Streamlink YouTube Error when launching a live stream

@luxorr

This is how it should work
You enter the address of the YT channel with an annotation live and when it is broadcasting you get a video ID.

Code:

PS C:\Users\Kamoz> streamlink https://www.youtube.com/channel/UC0vwjMGoZpwG_lLBuF6_ALA/live
[cli][debug] OS:         Windows 10
[cli][debug] Python:     3.9.10
[cli][debug] Streamlink: 3.2.0
[cli][debug] Requests(2.27.1), Socks(1.7.1), Websocket(1.2.3)
[cli][debug] Arguments:
[cli][debug]  url=https://www.youtube.com/channel/UC0vwjMGoZpwG_lLBuF6_ALA/live
[cli][debug]  --loglevel=debug
[cli][debug]  --player-args=--no-one-instance --play-and-exit
[cli][debug]  --player-no-close=True
[cli][debug]  --default-stream=['best']
[cli][debug]  --ffmpeg-ffmpeg=C:\Program Files (x86)\Streamlink\ffmpeg\ffmpeg.exe
[cli][info] Found matching plugin youtube for URL https://www.youtube.com/channel/UC0vwjMGoZpwG_lLBuF6_ALA/live
[plugins.youtube][debug] c_data_keys: gl, m, pc, continue, ca, x, v, t, hl, src, uxe
[plugins.youtube][debug] Using video ID: KXgzZdMLJ6E
[plugins.youtube][debug] This video is live.
[utils.l10n][debug] Language code: pl_PL
[cli][info] Available streams: 144p (worst), 240p, 360p, 480p, 720p (best)
[cli][info] Opening stream: 720p (hls)
[cli][info] Starting player: "C:\Program Files\VideoLAN\VLC\vlc.exe"
[stream.hls][debug] Reloading playlist
[cli][debug] Pre-buffering 8192 bytes
[stream.hls][debug] First Sequence: 1285767; Last Sequence: 1285781
[stream.hls][debug] Start offset: 0; Duration: None; Start Sequence: 1285779; End Sequence: None
[stream.hls][debug] Adding segment 1285779 to queue
[stream.hls][debug] Adding segment 1285780 to queue
[stream.hls][debug] Adding segment 1285781 to queue
[stream.hls][debug] Segment 1285779 complete

The problem is that on OATV 7.0 / 7.1 you get a bug in streamlinksrv.

Code:

[streamlinksrv][debug]  url=https://www.youtube.com/channel/UC0vwjMGoZpwG_lLBuF6_ALA/live
[streamlinksrv][debug]  stream=['best']
[streamlinksrv][info] Found matching plugin youtube for URL https://www.youtube.com/channel/UC0vwjMGoZpwG_lLBuF6_ALA/live
[streamlinksrv][error] Unable to validate result: iselement(None) is not true
[streamlinksrv][debug] Send Offline clip

This error is most likely related to the python3-lxml library.

YT plugin should resolve the name
search for video id
and pass to streamlink so that the player can start the stream

The fact that after giving the link z / watch? V = KXgzZdMLJ6E works, I know very well, but what if this ID is variable. Today it is like this and in a few hours or days it is different.
And that's what this plugin "youtube.py" is for to look for this ID tag

This python-lxml ipk is for PY2 image.

My current version

Code:

opkg list | grep python3-lxml
python3-lxml - 4.6.3-r0 - Powerful and Pythonic XML processing library combining libxml2/libxslt with the ElementTree API.

The reference to "iselement" is in the file "validate.py" /usr/lib/python3.9/site-packages/streamlink/plugin/api

Code:

from lxml.etree import Element, iselement

And now I don't know if the error in streamlinksrv is caused by the lxml library or the validate.py file.

I have OATV 6.4 Streamlink mod Billy2011 and everything works fine here. No problems with links https://www.youtube.com/channel/<channel_id>/live
It also works without any problems in Streamlink 3.2.0 on Windows

However, in OATV 7.0 / 7.1 Streamlink 3.2.0 and the same list with the same links to YT live streams causes this unfortunate error [streamlinksrv] [error] Unable to validate result: iselement (None) is not true.

Friend's opinion @Billy2011 would be useful here about this "streamlinksrv" error.


How is it on your PY3 image and streamlink 3.2.0
This entry works for you

Code:

http://127.0.0.1:8088/https://www.youtube.com/channel/UCpUZqLZNnVwlBIeOZYslMDw/live

I give up, I don't have enough knowledge to fight it.

Finally, I will only add that for the YT links to work in the "https://www.youtube.com/channel/ <channel_id> / live" format, I copied to OATV 7.0 PY3 Streamlink-27 mod j00zek which is prepared for Python 2.7 images.
I made a few adjustments to the files and finally got what I wanted.
All YT live feeds work.

Code:

root@sf8008:
clear
/usr/sbin/streamlinksrv manualstart debug
pidfile /var/run/streamlink.pid does not exist. Daemon not running?
[streamlinksrv][info] ###################################################
[streamlinksrv][info] Sat Apr 23 19:28:10 2022 Server (1.8.2 - 22.02.27.0627) started
[streamlinksrv][info] Host:            sf8008
[streamlinksrv][info] Port:            8088
[streamlinksrv][info] OS:              Linux-4.4.35-armv7l-with-glibc2.34
[streamlinksrv][info] Python:          3.9.7
[streamlinksrv][info] Streamlink:      1.27.7.0-dev / 2021-09-07
[streamlinksrv][info] Log level:       debug
[streamlinksrv][debug] Options Parser: 0.2.9
[streamlinksrv][debug] youtube-dl:     2021.12.17
[streamlinksrv][info] Requests(2.26.0), Socks(1.7.1), Websocket(1.2.1)
[streamlinksrv][info] ###################################################
[streamlinksrv][debug] Received URL: https://www.youtube.com/channel/UCpUZqLZNnVwlBIeOZYslMDw/live
[streamlinksrv][info] Processing URL: https://www.youtube.com/channel/UCpUZqLZNnVwlBIeOZYslMDw/live
[streamlinksrv][debug] Arguments:
[streamlinksrv][debug]  url=https://www.youtube.com/channel/UCpUZqLZNnVwlBIeOZYslMDw/live
[streamlinksrv][debug]  stream=['best']
[streamlinksrv][info] Found matching plugin youtube for URL https://www.youtube.com/channel/UCpUZqLZNnVwlBIeOZYslMDw/live
[plugin.youtube][debug] Using video ID: udVRpT5ZuyU
[plugin.youtube][debug] This video is live.
[utils.l10n][debug] Language code: en_US
[streamlinksrv][info] Available streams:
144p (worst), 240p, 360p, 480p, 720p (best)
[streamlinksrv][info] Opening stream: 720p (hls)
[stream.hls][debug] Reloading playlist
[stream.hls][debug] First Sequence: 437383; Last Sequence: 437397
[stream.hls][debug] Start offset: 0; Duration: None; Start Sequence: 437395; End Sequence: None
[stream.hls][debug] Adding segment 437395 to queue
[streamlinksrv][debug] Pre-buffering 8192 bytes
[stream.hls][debug] Adding segment 437396 to queue
[stream.hls][debug] Adding segment 437397 to queue
[streamlinksrv][debug] Writing stream to player
[stream.hls][debug] Download of segment 437395 complete
[stream.hls][debug] Download of segment 437396 complete
[stream.hls][debug] Download of segment 437397 complete
[stream.hls][debug] Reloading playlist
[stream.hls][debug] Adding segment 437398 to queue
[stream.hls][debug] Download of segment 437398 complete
[stream.hls][debug] Reloading playlist
[stream.hls][debug] Adding segment 437399 to queue
[stream.hls][debug] Download of segment 437399 complete
[stream.hls][debug] Reloading playlist
[stream.hls][debug] Adding segment 437400 to queue
[streamlinksrv][info] Detected player disconnect
[streamlinksrv][info] Stream ended
[stream.segmented][debug] Closing worker thread
[stream.segmented][debug] Closing writer thread
[streamlinksrv][info] Closing currently open stream...
[stream.hls][debug] Download of segment 437400 complete
^C
[streamlinksrv][info] Interrupted! Exiting...
[streamlinksrv][info] Sat Apr 23 19:28:50 2022 Server stopped - Host: sf8008, Port: 8088

root@sf8008:

The problem with live streaming "https://www.youtube.com/channel/ <channel_id> / live" format in Streamlink 3.2.0 on PY3 OATV 7.0 / 7.1 images remains unresolved.

I'm just wondering where to report this streamlink bug.
Someone has links to GitHub or another OATV version of Streamlink.

Installing Streamlink mod j00zek is a bit of a problem.
There is also no ipk
And it is also dedicated exclusively to the PY2 image

But it has a few original plates that are not available in other versions, for example (WP Pilot, TVP GO and TVP Stream)
It is dedicated to Polish IPTV recipients

But if you want, I can write some step by step
Unless you know Polish, I will provide you with links where everything is described.