How do music service pages retrieve YouTube video URL? - youtube

Music sites like Playmoss and Submissionhub manage to retrieve the YouTube video file URL from the standard player watch URL. When a user pasts a YouTube URL like this into their service, the get the video file URL like this and save them in their system. This is necessary to later reproduce the media files with an external audio player like SoundManager2.
I learned that it's possible to retrieve the info from command line but that's impossible to do so from embedded YouTube videos.
Any idea how the mentioned sites manage to do that?

It is impossible (and illegal) to retrieve YouTube video URL. Music sites like the mentioned in the question seem to play YouTube files controlling the embedded videos. This can be done using Javascript as described here.

Related

Is there any way to programatically download a youtube video in mp4 format?

I own a YouTube channel with 500+ videos. I create one to two videos a week. I am building my own website where I want to host these videos as well.
To quickly move all my older videos I want to create a script where for a given YouTube video URL the video is downloaded in MP4 format. I can then tie this into a larger workflow which leverages Youtube and Akamai's APIs to move videos from Youtube to Akamai automatically.
I know how to use YouTube's APIs to get all my video URLs. I do not want to embed a Youtube video and need to (for business reasons) use a service like Akamai.
I want a solution I can automate so not looking for apps that do this.

How to use YouTube Data API v3 to retrieve video url links?

My product is a media player box without a browser supports. Our YouTube application on the box used to use v2 to retrieve videos's url links with mp4 formats to make a playback:
http://gdata.youtube.com/feeds/api/videos/VIDEO_ID?format=3
Recently, all video links using this method direct me to a warning video, saying that I need to migrate to v3.
I study the v3 but cannot find a way to retrieve the video links.
How can I supposed to play YouTube videos without a browser on my box?
Are there any official ways?

JavaFX project play youtube videos

I work on an automatically music player. To be short, i use the Last.fm api to get a lot of tracks names and tags. Using these tags and some intelligence computing algorithms, once you play a track, the player sets another track (with tags very appropriate to the tags of the track listened before).
I used the youtube API to search for the URL's of the movies, and I managed to make it work. Now I want to make the videos play on my music player. I have tried to place the youtube player on WebView. It works, but not as intended. I want to control that player. I want it to start playing automatically, and I want to get noticed when the video ended so I can start the next one.
Any clues of what should I do to play the videos from youtube based on the search that uses the Youtube API, and to have control over the youtube player that I place on my GUI(make it play and stop from command line)? Or is there any possible way do download the youtube movie and play it using the JavaFX API? I searched google and noticed I cannot download youtube movie into a format that can be played by JavaFX api.
Update Dec 4th, 2015
Some versions of JavaFX 8 are unable to play back youtube video content. Currently, for instance, Java 8u66 cannot playback youtube video content, but Java 8u72 early access release can.
Also note some of the videos referenced in the sample solution are no longer available or are protected from play in embedded video players. So ensure that you perform any tests using available and videos that have not been distribution restricted. Refer to the youtube documentation for information on distribution restriction if need be.
Any clues of what should I do to play the videos from youtube
As a hints to get you started, see code playing YouTube videos in JavaFX and the YouTube HTML5 api.
Here is the sample code I linked running and playing YouTube videos back within a JavaFX WebView with some (very minimal) control over the video playback via interaction with a JavaFX "New Song" button.
Or is there any possible way do download the youtube movie and play it using the JavaFX API? I searched google and noticed I cannot download youtube movie into a format that can be played by JavaFX api.
I think such a usage would violate YouTube's terms of service. I believe YouTube requires you to play the video back using the YouTube video player (let's them insert ads in the video player etc).
5.1 A
you agree not to distribute any part of or parts of the Website or the
Service, including but not limited to any Content, in any medium
without YouTube's prior written authorisation, unless YouTube makes
available the means for such distribution through functionality
offered by the Service (such as the YouTube Player);
5.1 C
you agree not to access Content through any technology
or means other than the video playback pages of the Website itself,
the YouTube Player, or such other means as YouTube may explicitly
designate for this purpose;
I advanced little, but I got stuck to other problems.
First of all, the code from jewelsea was great. Now I could embed the player into a secondary window of my player and it shows the movie based on the URL that i got using the youtube api. But it looks like JavaFX cannot show most of the movies. It shows me the youtube player and an error message saying that I need to install latest version of Adobe Flashplayer. From my research, I noticed that the webView can only show movies with quality set at 240p, not higher.
I have searched a lot on Google how to make my webView to play the 240p quality video. First of all, i tried to set the youtube query parameters (https://developers.google.com/youtube/2.0/developers_guide_protocol_api_query_parameters#formatsp). I tried all the parameters from there: 1,5 and 6. But yet, I did not get the URL of movie with format that can be viewed on the webView of the JavaFX.
I also tried to embed the video quality in the URL of the movie like this:
http:/www.youtube.com/watch?v=og2YZlLhjKs&vq=small:240p ; but it does not work at all. I also wrote that URL in the browser and it looks like the youtube automatically sets the video to the highest quality, no matter what parameter I write in the URL.
The youtube api code that I used is the same like in this webpage: http://www.javacodegeeks.com/2010/05/getting-started-with-youtube-java-api.html
I just moved the main class code to a method that returns the URL of the first video that is in the list, and I changed the " query.setOrderBy(YouTubeQuery.OrderBy.VIEW_COUNT); "
to " query.setOrderBy(YouTubeQuery.OrderBy.RELEVANCE);". And this works fine, it shows the url to proper music videos that I search.
I am sorry for not showing the code of my project but it is big and it contains 2-3 api keys, and if you tell me how to change the video URL http:/www.youtube.com/watch?v=og2YZlLhjKs to work on the code from this website: https:/gist.github.com/jewelsea/1437374 , then I will know that to do to make it work on my project as well;
And the thing about YouTube playback API also enlightened me. I see that API has a lot of functions that could help me to play a lot easier with the video content (make it play, make it stop) but the problem is that I do not have knowledge about javascript programming and it is very sad that I do not have those methods in Java API as well. Maybe I will give it a try and insert javascript code into my webview. But, if I edit the webview using javascript... Is it going to play higher quality movies on the JavaFX webView?

how do i get the flv file path from a youtube URL

i have an swf media player
which play flv videos
but i want it to play youtube videos
so i must pass to the player flv file path
the senario is a website which i can upload videos or put a url
and i can put a youtube video URL
i am using asp.net
and i need a solution
whenever i detect a user is entering youtube video
i must convert it to flv file path to be played in the player
This post explains how to retrieve links of different qualities (FLV and more): youtube get_video not working
However, if you're just going to play the videos, it would be easiest to use Youtube's chromeless player API: http://code.google.com/apis/youtube/flash_api_reference.html
You can use a current web service which is already implemented for your project
Use www.keepvid.com to decode the url from YouTube. First go to YouTube and load a video then you copy the url in the address bar and it should show something like this:
http://chi-v48.chi.youtube.com/get_video?video_id=TvedUxLtZKQ
One thing left to do is to add .flv to the end of the url so it ends up like this:
http://chi-v48.chi.youtube.com/get_video?video_id=TvedUxLtZKQ.flv

How to play youtube videos through vlc plugin?

I'm using vlc plugin into C# Windows form application. It works fine with all media type but it can't play youtube videos through the plugin also it can be played in the main player itself. I'm using the following code :
axVLCPlugin2.playlist.add("http://www.youtube.com/watch?v=BxPtmLmqdXU");
axVLCPlugin2.playlist.play();
How the could should be to be able to play youtube videos ?
You are specifying the URL of the youtube web page, not of the video itself. You need to get the URL of the video itself and specify that. There are many web pages that allow you to extract the URL of the video, given a youtube page URL, like:
Get link to actual video

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