TLDR;
The Youtube script from CSP can only stream from a single URL. Youtube itself doesn't support it anymore as they now use 2 URLs for each video, one for audio and one for video.
Alright so I tried the fix again yesterday and can confirm that it doesn't work 98% of the time. I don't have a fix right now but kinda have an idea of what is going wrong with it, I will share it here hoping someone might fix it eventually as I don't have much free time to make one.
Test environment:
CSP v0.1.8.0-preview442
Windows 10
yt-dlp version 2023.10.13
Debug Method:
AC Debug function for LUA Scripting
Visual Studio Code for editing
A lot of trial and error
Also performed the test on stock youtube.lua from the CSP itself.
Findings:
Possible fixes:
On all possible fixes I could think of, function findOptimalQuality might not be needed anymore as recent updates from YT-DLP made it easier to select a video format using regex.
Solution 1:
Use YT-DLP to download videos locally then stream it from there. Youtube app from assetto corsa would now act like a windows media player with Youtube as source. This will be a lot slower and dependent on your internet speed.
Solution 2:
Modify youtube.lua to play both audio and video urls at the same time. I'm not an expert with LUA scripting so I'm not sure if it can handle that. If this is possible, this will be the best fix. It might even improve the video quality overall and enable the user to select a video quality of choice.
These are the solutions that I can think on the top of my head, as again, I'm not a LUA expert. I might make a fix in my free time, but I don't think I will have one anytime soon.
Also, I want to thank Jarlthedriver for the credit, although the fix was short-lived, I still appreciated it
The Youtube script from CSP can only stream from a single URL. Youtube itself doesn't support it anymore as they now use 2 URLs for each video, one for audio and one for video.
Alright so I tried the fix again yesterday and can confirm that it doesn't work 98% of the time. I don't have a fix right now but kinda have an idea of what is going wrong with it, I will share it here hoping someone might fix it eventually as I don't have much free time to make one.
Test environment:
CSP v0.1.8.0-preview442
Windows 10
yt-dlp version 2023.10.13
Debug Method:
AC Debug function for LUA Scripting
Visual Studio Code for editing
A lot of trial and error
Also performed the test on stock youtube.lua from the CSP itself.
Findings:
- The error is originating mainly on the function findVideoStreamURL, specifically on line 48. This line is where yt-dlp is used to grab a combined stream URL, which is synonymous to what a direct link is.
- youtube.lua uses YT-DLP to grab everything it needs from Youtube. Based on my understanding, the lua script first searches for the best format of the video that the user selected and has a combined audio and video. If it finds one, it will store the quality index in a variable and use it as a reference to get the stream link.
- Now here's the problem, Youtube now uses two different URLs for each video, one for audio and one for video. In the past, this was not the case, some videos still has functioning combined stream links. However, combined stream links is now regarded as legacy and Youtube doesn't support it anymore. Source. It will work, but most of the time it won't.
- The current youtube.lua script only supports combined stream URLs. It can only process a single URL.
Possible fixes:
On all possible fixes I could think of, function findOptimalQuality might not be needed anymore as recent updates from YT-DLP made it easier to select a video format using regex.
Solution 1:
Use YT-DLP to download videos locally then stream it from there. Youtube app from assetto corsa would now act like a windows media player with Youtube as source. This will be a lot slower and dependent on your internet speed.
Solution 2:
Modify youtube.lua to play both audio and video urls at the same time. I'm not an expert with LUA scripting so I'm not sure if it can handle that. If this is possible, this will be the best fix. It might even improve the video quality overall and enable the user to select a video quality of choice.
These are the solutions that I can think on the top of my head, as again, I'm not a LUA expert. I might make a fix in my free time, but I don't think I will have one anytime soon.
Also, I want to thank Jarlthedriver for the credit, although the fix was short-lived, I still appreciated it
Last edited:
