Youtube get URL with slow speed download

[Alehap]

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• I'm asking a question and not reporting a bug or requesting a feature
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• I've verified that I'm running yt-dlp version 2023.02.17 (update instructions) or later (specify commit)
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Hi,
I'm wondering if anyone else is having the same problem as me in that the URL of the Youtube video occasionally has sluggish download speed (around 30KB/s), especially with video format id 137?

The download speed is too slow about 161KB/s but many videos have better speed:

[youtube] Extracting URL: yTCDVfMz15M
[youtube] yTCDVfMz15M: Downloading webpage
[youtube] yTCDVfMz15M: Downloading android player API JSON
[info] yTCDVfMz15M: Downloading 1 format(s): 22
[download] Destination: P!nk - Try (Official Video) [yTCDVfMz15M].mp4
[download] 100% of   19.67MiB in 00:00:00 at 51.88MiB/s

Do you think this is an issue?
Thanks.

Provide verbose output that clearly demonstrates the problem

• Run your yt-dlp command with -vU flag added (yt-dlp -vU <your command line>)
• Copy the WHOLE output (starting with [debug] Command-line config) and insert it below

Complete Verbose Output

# yt-dlp -vUf 135 https://www.youtube.com/watch?v=xspg7SNxTWA
[debug] Command-line config: ['-vUf', '135', 'https://www.youtube.com/watch?v=xspg7SNxTWA']
[debug] Encodings: locale UTF-8, fs utf-8, pref UTF-8, out UTF-8, error UTF-8, screen UTF-8
[debug] yt-dlp version 2023.02.17 [a0a7c01] (pip)
[debug] Python 3.7.16 (CPython x86_64 64bit) - Linux-4.18.0-408.el8.x86_64-x86_64-with-Ubuntu-18.04-bionic (OpenSSL 1.1.1  11 Sep 2018, glibc 2.26)
[debug] exe versions: ffmpeg information (setts), ffprobe information
[debug] Optional libraries: Cryptodome-3.17, certifi-2022.12.07, mutagen-1.45.1, sqlite3-2.6.0, websockets-9.1
[debug] Proxy map: {}
[debug] Loaded 1782 extractors
[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
Latest version: 2023.02.17, Current version: 2023.02.17
yt-dlp is up to date (2023.02.17)
[youtube] Extracting URL: https://www.youtube.com/watch?v=xspg7SNxTWA
[youtube] xspg7SNxTWA: Downloading webpage
[youtube] xspg7SNxTWA: Downloading android player API JSON
[debug] Sort order given by extractor: quality, res, fps, hdr:12, source, vcodec:vp9.2, channels, acodec, lang, proto
[debug] Formats sorted by: hasvid, ie_pref, quality, res, fps, hdr:12(7), source, vcodec:vp9.2(10), channels, acodec, lang, proto, filesize, fs_approx, tbr, vbr, abr, asr, vext, aext, hasaud, id
[info] xspg7SNxTWA: Downloading 1 format(s): 135
[debug] Invoking http downloader on "https://rr1---sn-4g5edndk.googlevideo.com/videoplayback?expire=1677515027&ei=s4T8Y8GHO5rUx_AP35WQqA4&ip=2a01%3A4f8%3Ac012%3Ab3a8%3A%3A1&id=o-AIxNKYAlgaop4aDLJjX4yRbnMKseszlaJ5r0ZJ0eVKrP&itag=135&source=youtube&requiressl=yes&mh=qW&mm=31%2C26&mn=sn-4g5edndk%2Csn-f5f7lnl7&ms=au%2Conr&mv=m&mvi=1&pl=55&initcwndbps=416250&spc=H3gIhs1kP_ug_Xp9ODDuze4ZxXFwTH4&vprv=1&svpuc=1&mime=video%2Fmp4&gir=yes&clen=36627864&dur=441.120&lmt=1651178714289365&mt=1677493029&fvip=5&keepalive=yes&fexp=24007246&c=ANDROID&txp=4532434&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cspc%2Cvprv%2Csvpuc%2Cmime%2Cgir%2Cclen%2Cdur%2Clmt&sig=AOq0QJ8wRQIgPozUSci2egLWCG2vrCMVyejJl1j3bXxX1tG1_6tzEg4CIQDeE4-uoYSdwTlh-zYWPXfKFBh5FOVxp1Cr2q75kH34BA%3D%3D&lsparams=mh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AG3C_xAwRQIhAPUiwVIkp1MlH9CHSuExUXn2Wrd9OYwkVkuAVv7YY-uCAiAtQ8hRWW3eWF9ZzOJ2AG7S-2SXagZRzJZurS-GARquSw%3D%3D"
[download] Resuming download at byte 915795
[download] Destination: At the Cross - Hillsong Worship [xspg7SNxTWA].mp4
[download]  16.4% of   34.93MiB at  161.57KiB/s ETA 03:05

[Alehap]

I'm trying on many VPS, and the problem appears at random. (and I dont see the issue with profile 720p, 360p)
Here's some additional information:
I have two VPSs, VPS A with regular download speeds and VPS B with sluggish download speeds.
I attempt to download the URL ytdlp created on VPS A to VPS B => Download speed is normal.
When I try to download on VPS A, the URL created on VPS B is sluggish.

So I think the issue may be come from URL generation function.

[scrutinizer11]

This video is particularly slow https://www.youtube.com/watch?v=kFp61MtbPbU Little Snitch shows a download speed of 300 Kb/s, the size is appr. 1GB, format - webm, h.264, 1080p.

It runs via proxy on port 3128 (macOS). What's interesting though is that glancing at the process yt-dlp in Activity Monitor reveals that it uses localhost:62760->localhost:ndl-aas

Relevant or not, it didn't pose a tangible problem related to speed.

[sergeychur]

Seems like videos which get throttled don't have "n" parameter. This parameter is required to bypass throttling (#4635, etc.)
Look "#6369 (comment)" for example.

The same video in browser has "n" parameter.

[KPackratt2k]

I too am having the same problem with a certain video.
https://www.youtube.com/watch?v=mrdR43-sqKs

Funnily enough, I can download the actual video in -f 22 just fine without throttling, but if I attempt to download the elemental streams (-f 139, -f 140, and -f 298), it's throttled to 20-50KiB/s.

Here's my verbose log from attempting to download the 140 (128kbps M4A) format:

C:\Users\Kaz\Downloads\youtube-dl>yt-dlp.exe -vU -f 140 https://www.youtube.com/watch?v=mrdR43-sqKs
[debug] Command-line config: ['-vU', '-f', '140', 'https://www.youtube.com/watch?v=mrdR43-sqKs']
[debug] Encodings: locale cp1252, fs utf-8, pref cp1252, out utf-8 (No VT), error utf-8 (No VT), screen utf-8 (No VT)
[debug] yt-dlp version 2023.02.17 [a0a7c01] (win_exe)
[debug] Python 3.8.10 (CPython AMD64 64bit) - Windows-7-6.1.7601-SP1 (OpenSSL 1.1.1k  25 Mar 2021)
[debug] exe versions: phantomjs 2.1.1
[debug] Optional libraries: Cryptodome-3.17, brotli-1.0.9, certifi-2022.12.07, mutagen-1.46.0, sqlite3-2.6.0, websockets-10.4
[debug] Proxy map: {}
[debug] Loaded 1782 extractors
[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
Latest version: 2023.02.17, Current version: 2023.02.17
yt-dlp is up to date (2023.02.17)
[youtube] Extracting URL: https://www.youtube.com/watch?v=mrdR43-sqKs
[youtube] mrdR43-sqKs: Downloading webpage
[youtube] mrdR43-sqKs: Downloading android player API JSON
[debug] Loading youtube-nsig.9419f2ea from cache
[debug] [youtube] Decrypted nsig ZpIpRaaYeR0wDnhs5 => zVcKhcpM20-ifg
[debug] Sort order given by extractor: quality, res, fps, hdr:12, source, vcodec:vp9.2, channels, acodec, lang, proto
[debug] Formats sorted by: hasvid, ie_pref, quality, res, fps, hdr:12(7), source, vcodec:vp9.2(10), channels, acodec, lang, proto, filesize, fs_approx, tbr, vbr, abr, asr, vext, aext, hasaud, id
[info] mrdR43-sqKs: Downloading 1 format(s): 140
[debug] Invoking http downloader on "https://rr2---sn-nx57ynsk.googlevideo.com/videoplayback?expire=1677562865&ei=kT_9Y_uHLI-ZsfIPis6boAk&ip=71.231.240.117&id=o-AAuv797I10Sjyt7VCVpTKqar7xfWsARrTVb8X5MRtpeA&itag=140&source=youtube&requiressl=yes&mh=ow&mm=31%2C29&mn=sn-nx57ynsk%2Csn-nx5s7nel&ms=au%2Crdu&mv=m&mvi=2&pl=21&initcwndbps=2003750&spc=H3gIhrN21SKaqdRHinjSnSQnoBqDSLg&vprv=1&svpuc=1&mime=audio%2Fmp4&gir=yes&clen=24833217&dur=1534.397&lmt=1675845429436172&mt=1677541035&fvip=2&keepalive=yesfexp=24007246&c=ANDROID&txp=5532434&sparams=expire%2Cei%2Cip%2Cid%2Citag%2Csource%2Crequiressl%2Cspc%2Cvprv%2Csvpuc%2Cmime%2Cgir%2Cclen%2Cdur%2Clmt&sig=AOq0QJ8wRQIgKOaTLhBOmdc3F_SqKLkWBQVll1vnVg5l4Bn5eQ7GuaECIQDyHWSSV_NctzrmVQuP3-DWEID3reVoVJAR8jIGFI4CxQ%3D%3D&lsparams=mh%2Cmm%2Cmn%2Cms%2Cmv%2Cmvi%2Cpl%2Cinitcwndbps&lsig=AG3C_xAwRAIgJXn8ge2xP9lDUVvIqPn-nLRp4DHX-XGBF1ys0r4mJoACIEluC3iSXs8ZtasgMVWiM2AfVyCf86QqJg5U0fbjjvdJ"
[debug] File locking is not supported. Proceeding without locking
[download] Destination: Installing Linux on the Nintendo Wii! [mrdR43-sqKs].m4a
[download]   6.6% of   23.68MiB at   31.61KiB/s ETA 11:56

[pukkandan]

Does --extractor-args youtube:player-client=web help?

Edit: No, all clients seem affected

[lb-d]

Over here it started happening with newer channels then with all of them. Probably on the youtube side.

[pukkandan]

Continued in #6400

[suhail993]

$$$

[Smokietr]

Am I the only one experiencing this problem in this version?

stable@2023.11.16

yt-dlp --get-url --throttled-rate 100k --extractor-args "youtube:player-client=ANDROID" https://www.youtube.com/watch?v=xxx --ignore-no-formats-error --no-warnings --print-json

The links it provides are very slow.

[Masterolic]

@Smokietr Did you tried after removing --throttled-rate?

[bashonly]

--print-json

@Smokietr are you extracting the download URLs with yt-dlp and then trying to download them with another program? Youtube throttles you if you don't download with an http chunk size of 10MB or less (which yt-dlp does natively, but most other programs will not)

If this is not the case, then open a new issue with a complete verbose log (-vU)

[Smokietr]

@Masterolic

Unfortunately the problem is the same. I added it to find a solution.

@bashonly

Yes, the situation is as you say. I provide download links to the mobile application. I am looking at other sites that use YT-DLP and there are those that give very fast results.

Example Site :

https://video.genyt.net/5OyDO_02yj8

After entering the site, please click on the generate links button.

[bashonly]

https://video.genyt.net/5OyDO_02yj8

this link (and every other page on that site) redirects me to https://www.genytb.net/?e503 with a 503 NA - Service Deprecating message

Yes, the situation is as you say. I provide download links to the mobile application. I am looking at other sites that use YT-DLP and there are those that give very fast results.

you need to only use the links for formats 22 and 18, which are unthrottled (and it looks like what that "genyt" site may have been doing)