I am developing an iOS app in Swift that plays audio files on TV over Google Cast.
App uses two-way communication over TextChannel to exchange information with the receiver app.
The app is working as expected until I put the app into the background. After the app is backgrounded the Google Cast session gets disconnected.
To ensure app is not susspended in the background while playing audio I have in my AppDelegate this code snippet:
try session.setCategory(AVAudioSession.Category.playback,
mode: AVAudioSession.Mode.default,
options: [AVAudioSession.CategoryOptions.mixWithOthers, AVAudioSession.CategoryOptions.allowAirPlay])
try session.setActive(true)
This is how I initialise the Google Cast:
let criteria = GCKDiscoveryCriteria(applicationID: kReceiverAppID)
let options = GCKCastOptions(discoveryCriteria: criteria)
options.suspendSessionsWhenBackgrounded = false
GCKCastContext.setSharedInstanceWith(options)
GCKCastContext.setSharedInstanceWith(options)
If I add a dummy AVPlayer to my ViewController and play a random mp3 file on the player while I play other audio files overcast connection to the Google Cast session remains connected and the app works as expected until mp3 stops playing on AVPlayer.
Here is my AVPlayer snippet:
let videoURL = URL(string: "https://file-examples-com.github.io/uploads/2017/11/file_example_MP3_5MG.mp3")
let player = AVPlayer(url: videoURL!)
let playerLayer = AVPlayerLayer(player: player)
playerLayer.frame = self.view.bounds
self.view.layer.addSublayer(playerLayer)
player.play()
Can anybody help me prevent the app from being suspended when it plays audio only while casting to TV?
Thanks!
Related
recently I have see that one of my apps feature stopped working. The main problem is that, now, I can play instagram videos from an URL. This feature was working time ago, but I can not say how time is broken because I have noticed the problem now.
For example, I have this URL from Instagram:
https://embed.storiesig.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
If you open the URL in web browser (Safari, Chrome, etc...) you will see the video running.
But If I try to play the video from a AVPlayer like it used to work, the video is not played. My code for video playback is like this:
let videoUrl = story.videoUrl!
if (videoUrl.absoluteString.lengthOfBytes(using: .utf8) > 0) {
let player = AVPlayer(url: videoUrl)
let playerLayer = AVPlayerLayer(player: player)
playerLayer.frame = self.view.bounds
self.view.layer.addSublayer(playerLayer)
player.play()
}
Where story.videoUrl is the URL of the example. If yo play the URL in a AVPlayer you will see nothing, so I don't know what is going on.
I have an iOS app that streams video on iPhone/iPad devices.
Now I need to get the bitrate on video streaming on the iPhone/iPad device.
ObservedBitrate and IndicatedBitrate does not help with this.
I also came across this below post but few comments mention it works for mpeg4 videos only.
How to check Resolution, bitrate of video in iOS
I'm looking for the bitrate of video streaming on iPhone/iPad and for any video format.
Thanks!
You can listen for AVPlayerItemNewAccessLogEntry notification to get current bitrates for your stream such as:
observedBitrate - aka your current download speed
indicatedBitrate - comes from m3u8 (BANDWIDTH) and means a min bitrate value to play your current stream
Adaptive video playback with AVPlayer can change a current stream to a stream with high or low bandwidth back and forth by network conditions but these changes do not appears on every stalls, network issues etc. because your steam can be buffered, m3u8 doesn't have stream with lower bandwidth to play etc. So if you need to detect a current realtime playback state look to stalls, FPS.
There is sample code in swift but it's easy convertible to objc if you need:
let url = URL(string: "https://bitdash-a.akamaihd.net/content/MI201109210084_1/m3u8s/f08e80da-bf1d-4e3d-8899-f0f6155f6efa.m3u8")!
let playerItem = AVPlayerItem(url: url)
self.player = AVPlayer(playerItem: playerItem)
NotificationCenter.default.addObserver(forName: .AVPlayerItemNewAccessLogEntry, object: playerItem, queue: nil) { notification in
if let event = playerItem.accessLog()?.events.last {
let bitrates = [event.observedBitrate,
event.indicatedBitrate,
event.averageVideoBitrate,
]
print(">", bitrates)
}
}
player?.play()
let playerLayer = AVPlayerLayer(player: player)
playerLayer.frame = view.bounds
view.layer.addSublayer(playerLayer)
Outputs:
> [16375938.865617642, 628000.0, 307568.0]
> [nan, 1728000.0, 0.0]
> [9830221.39078689, 2528000.0, 1422032.0]
My following code plays the "fox village.mp4" video, which is commented out, but not the you tube link and gives this error:
AddInstanceForFactory: No factory registered for id F8BB1C28-BAE8-11D6-9C31-00039315CD46
Please help if you can. Thanks!!
let videoURL = URL(string: "https://youtu.be/MTNCcC_H3oM")!
// let videoURL = URL(string: "https://wolverine.raywenderlich.com/content/ios/tutorials/video_streaming/foxVillage.mp4")!
let player = AVPlayer(url: videoURL)
let playerViewController = AVPlayerViewController()
playerViewController.player = player
present(playerViewController, animated: true) {
player.play()
The first thing you need to clear that AVPlayer does not have the capacity to play youtube video from URL.
Note:
One thing you need to keep in your mind, AVPlayer is able played video if URL is direct downloadable.
In your case, you need to go with below solutions
Solution: 1
To play a youtube video, You need to go with the WKWebView or WKWebView with iFrame
OR
I suggest you need to go with YTPlayerView
OR
How to embed a Youtube video into my app?
I use AVPlayer to play a simple MP4 video. As I need to know when the video finishes, I add an observer for the notification AVPlayerItemDidPlayToEndTime.
This works fine, if the video is played on the device, but the notification is never posted if we are streaming the video from a device to an Apple TV (4th gen) with tvOS 12.2 via AirPlay.
Strangely, this problem only occurs with MP4 videos, not with HLS streams (m3u8), which makes me wonder if this might be a tvOS (or AirPlay) bug.
I created a small POC to isolate the problem, and this is what I do:
let bunny = "https://www.sample-videos.com/video123/mp4/720/big_buck_bunny_720p_1mb.mp4"
// create a new player with every call to startVideo() for demo purposes
func startVideo() {
// remove layer of current play from playerContainer as
// a new one will be created below
if let sublayers = playerContainer.layer.sublayers {
for layer in sublayers {
layer.removeFromSuperlayer()
}
}
if let videoUrl = URL(string: bunny) {
// create player with sample video URL
self.player = AVPlayer(url: videoUrl)
guard let player = self.player else {return}
// add player layer to playerContainer
let playerLayer = AVPlayerLayer(player: player)
playerLayer.frame = playerContainer.bounds
playerLayer.videoGravity = .resizeAspectFill
playerContainer.layer.addSublayer(playerLayer)
// add block-based observer to listen for AVPlayerItemDidPlayToEndTime event
let _ = NotificationCenter.default.addObserver(forName: NSNotification.Name.AVPlayerItemDidPlayToEndTime,
object: player.currentItem,
queue: .main) { notification in
print("Item did finish playing! \(notification)")
}
player.play()
}
}
Just to clarify again, this works fine, if one of the following conditions is true:
The video is played on the device, and no AirPlay is involved.
The video is streamed to an AppleTV 3rd gen.
An HLS instead of an MP4 video is used.
I also tried the following things, but the result was the same:
Don't set currentItem as object when adding observer.
Don't specify the queue when adding observer.
Don't use block-based but selector-based method to add an observer.
Any help is appreciated. This might be a duplicate of this question, but as there are no answers, and linked question is about HLS and not MP4, I decided to post this question anyway.
HI I'm developing Broadcast App for that I'm using Videocore library now how can i play that streaming video in ios app i tried with the MpMoviePlayer but it won't support the rtmp stream. so is there any third party libraries available for RTMP supported Players please help me
If you already have the RTMP live stream ready and playing as HLS then you can simply add .m3u8 after the stream name and make RTMP link to http. For example you have RTMP link like this:
rtmp://XY.Y.ZX.Z/hls/chid
You have to just make the url like this:
http://XY.Y.ZX.Z/hls/chid.m3u8
and it will play smoothly in iOS. I have tried following code and it is working fine.
func setPlayer()
{
// RTMP URL rtmp://XY.Y.ZX.Z/hls/chid be transcripted like this http://XY.Y.ZX.Z/hls/chid.m3u8 it will play normally.
let videoURL = URL(string: "http://XY.Y.ZX.Z/hls/chid.m3u8")
let playerItem = AVPlayerItem(url: videoURL!)
let adID = AVMetadataItem.identifier(forKey: "X-TITLE", keySpace: .hlsDateRange)
let metadataCollector = AVPlayerItemMetadataCollector(identifiers: [adID!.rawValue], classifyingLabels: nil)
//metadataCollector.setDelegate(self, queue: DispatchQueue.main)
playerItem.add(metadataCollector)
let player = AVPlayer(playerItem: playerItem)
let playerLayer = AVPlayerLayer(player: player)
playerLayer.frame = self.view.bounds
self.view.layer.addSublayer(playerLayer)
self.player = player
player.play()
}
But it will be slow and laggy because of the high resolution video stream upload. If you make the resolution to low when uploading the video stream, it will work smooth in low bandwidth network as well.