How does YouTube web start a video playback automatically on mobile Safari without a user's action? - ios

YouTube web version can always play a video automatically on mobile Safari without a user's explicit action to the HTML video element. How does YouTube do this?

YouTube's actually done something quite tricky, if you click a video related to the current one or in the search, it doesn't actually load another page, it uses JavaScript to update the page to look like a different one, and then uses that same click handler to start the video, so the system thinks that it was user initiated. That's why if you enter the URL for a video straight into the address bar when not in YouTube it doesn't auto-start...

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Issues with Soundcloud iframe and YouTube iframe together

The Soundcloud widget works fine playing multiple tracks in succession. If I then hide that frame, play a youtube video in a youtube iframe, and then switch back to a new track in the Soundcloud widget, it loads but will not play (ignoring the autoplay setting and any widget.play() calls). I had this working on Chromecast with the developer preview SDK and the 1.0 cast receiver but now with the 2.0.0 receiver it's broken. Any ideas how to proceed?
Currently there is no supported mechanism in the SDK to play YouTube videos outside of the YouTube app. Note that in general, applications may not allow other senders launch or control their receiver side, for example Hulu+ may not like it if you wan to write your own app to launch and control that application on your Chromecast; if they decide to allow such model, they need to publish the steps (for example, they can publish their App ID and additional custom data that would link deep into their application). YouTube is no different in that respect.
ok, got this working so hopefully this is useful to others. Assuming only one is active and visible at a time, the trick is to destroy the prior widgets rather than try to reuse them. For YouTube this does not mean reloading the iframe_api but simply calling YTPlayer.destroy() and new YT.Player() next time around. For SoundCloud keep a handle of the iframe and then call iframe.parentNode.removeChild(iframe) to destroy and then create again next time.

Is there ANY way to provide a link to a playlist in the YouTube iOS App that will actually work?

I've tried maybe 6 different permutations of YouTube playlist sharing links and none of them will bring you to the playlist on iOS browsers when it transfers you over to the YouTube app (or if it stays in the browser for that matter).
What it does is it goes to the individual video page for the starting point of the playlist, but it's not the actual playlist view, which IS accessible only if you go through the playlists tab within the YouTube mobile app.
Does anyone know if there's an answer or if YouTube just doesn't want me going to a playlist view in its app when clicking the link on my mobile device?
Simple summary:
All I want to do is put a link in my website that will (in a mobile browser) take me to a playlist in the proper playlist view (where it continues on to the next video after the current one is done) either via the YouTube app switch or simply in the mobile browser.
Its because Youtube doesn't understand browser URL of playlist like this -
http://www.youtube.com/playlist?list=PLgrYntDWyYDdHwZney5QoTDFQrphRmYoK
Alternatively, go to your video->playlist in youtube
Right click on the playlist and select "copy link address"
It provides a link something like this -
http://www.youtube.com/watch?v=ILwOQV32rHg&list=FLLpWow4PGIVkCJifJxrMfwA
Use this as a URI to play in native youtube app.
youtube://www.youtube.com/watch?v=ILwOQV32rHg&list=FLLpWow4PGIVkCJifJxrMfwA
Now, when the youtube app is launched it navigates to your playlist and continues to play all the videos in your playlist one by one.
For more info - you can check my answer to similar question here -
Youtube URI

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?

Youtube video player

Is this possible to allow just a specific website to display a youtube video
with the iframe embeded code? or with the api
With the iframe code alone it is not possible. Your youtube-video displayed on the youtube website. As long as anyone can view this video by going to youtube like thishttp://www.youtube.com/watch?v=jJjg4JweJZU
for example, anyone can embedd it using an iframe.
What you could do is limit the acces to this video itself. As far as I remember you could specify whether anyone or just your friends can whatch your video.
The latter case may not keep people from embedding your video, but it will keep them from viewing it as long as they are not logged in to youtube and are your friends there.

Youtube API Java client library - How check if a video entry is available for mobile?

I have a content management server application written in Java. A background process goes through a list of video ids and fetches the details for those video ids using Youtube API.
I would like to check if a particular video entry is available for mobile or not.
I checked syndicate allowed like
String videoEntryUrl = "http://gdata.youtube.com/feeds/api/videos/"+videoID;
VideoEntry videoEntry = service.getEntry(new URL(videoEntryUrl), VideoEntry.class);
if(!videoEntry.getXmlBlob().getBlob().contains("yt:accessControl permission='denied' action='syndicate'")){
System.out.println("The video is syndicatable");
}
Checking for syndicate still not solved the problem and the server still lets in videos that cannot play on Android phone.
What is the right way to filter only the videos that can be played on mobile?
There's no single check to see whether a video is playable "on mobile".
There are a variety of different reasons why a particular video might not be playable on a particular platform, and unfortunately the only way to be absolutely sure whether a particular video will play in a particular player is to attempt to play it.
That being said, this blog post goes into more details about the types of common playback restrictions that crop up: http://apiblog.youtube.com/2011/12/understanding-playback-restrictions.html

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