`extract_info` freezing after a lot of usage.

[Phxntxm]

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[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'-v', u'http://www.youtube.com/watch?v=BaW_jenozKcj']
[debug] Encodings: locale cp1251, fs mbcs, out cp866, pref cp1251
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[debug] Python version 2.7.11 - Windows-2003Server-5.2.3790-SP2
[debug] exe versions: ffmpeg N-75573-g1d0487f, ffprobe N-75573-g1d0487f, rtmpdump 2.4
[debug] Proxy map: {}
...
<end of log>

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I understand as I start this, that I do not have the relevant info in order to solve this issue, however let me explain because I need help getting that relevant info.

Here's my code I'm using that causes the issue: https://github.com/Phxntxm/Bonfire/blob/master/cogs/voice_utilities/downloader.py#L82

Basically, the issue is after lots of usage (what I'm using this for, about 20-30 calls are made every minute or so), this will seem to just freeze right here. If I add a print call before and after that coroutine call, the one before prints, the one after does not. It does not error, it simply seems to be an infinite call that never finishes, and that is where I'm stuck, trying to figure out why this happens.

I probably need a debugger, but as far as I can tell pdb does not handle coroutines so I can't use it. I also can't replicate this from command line, because it's only replicateable after a ton of usage in the same process. Additionally, no matter what I query this is the same result, if I query something that shouldn't work, that should, etc.

This is either an issue with youtube-dl or asyncio, however at this point I'm leaning towards youtube-dl, and I need help figuring out exactly where since there's no output and it will never continue past that point no matter how long I wait.

The only additional information I can probably add at this point is that I've asked a few people about this, and have heard that they've experienced it too, and believe it is location based. With this in mind, this issue did only start occurring (with the same exact relevant code), when I moved this from a server in the US to one in Paris.

[yan12125]

Could you insert codes in extract_info and see what's the exact line that hangs? It's unlikely that extract_info runs forever, but it may run for a very long time if the network is unstable or the target URL contains a long playlist. Removing 'quiet': True, and add 'verbose': True, can help debugging, too.

[Phxntxm]

Thank you, I really should have been able to figure that out but I think this issue was frustrating me so much I wasn't thinking right. I've done both of these suggestions and will wait till the next time it stops working.

[Phxntxm]

Okay. This printing helped, here's what happened (in a pastebin link because it's pretty large):
https://pastebin.com/raw/hcvtfDJh
Here's the method extract_info again just for reference:
https://github.com/rg3/youtube-dl/blob/master/youtube_dl/YoutubeDL.py#L734

I printed ies after line 748, it's None
I printed ie after line 754, it's None
I printed ie_result after line 760 and that's the large dictionary of info in the pastebin.
Then where it says "We made it to process_ie_result" is right before line 771
I then have a "We made it past process_ie_result" after this return (changed it to a variable, printed, then returned obviously)

This is where it got stuck, when calling process_ie_result and you can see all the info at the end. For some odd reason, ffmpeg is waiting for input...this is from a script, I can't give it input, this is not desired....this then causes it to not function again because it is endlessly waiting for input. So the main issue here is why is this waiting for input? That should not happen.

[dstftw]

ffmpeg does not wait for input, it downloads what you asked it to download, i.e. Lchg2dGUbO0 that is a live stream 24/7. That's why it never ends.

[Phxntxm]

How do I disallow this then.

Whether or not it's ffmpeg waiting for input, this is still an issue because input is being requested by something before it can continue. Closing this with a very generic answer is a little bit annoying because this in no way resolved the issue. It may lead towards the right direction, but no issue has been solved.

This is not me downloading these videos, my bot is used by about 8k people at this time, and if youtube_dl does not disallow livestreams by default I need to disallow this somehow. How do I do so? I'm not finding an option for it as I look.

[dstftw]

--match-filter '!is_live'.

[Phxntxm]

Perfect, that worked thank you for the help.