I am developing an iPhone application in which I play the videos using MPMoviePlayerController. Sometimes, some of the videos does not play immediately after I call play on MPMoviePlayerController.
I have called prepareToPlay and in the notified method of MPMediaPlaybackIsPreparedToPlayDidChangeNotification, I am calling play on MPMoviePlayerController.
How can I identify the problem here?
Try using the property movieSourceType and assign a proper value to it before running prepareToPlay.
From MPMoviePlayerController reference;
The default value of this
property is MPMovieSourceTypeUnknown.
This property provides a clue to the
playback system as to how it should
download and buffer the movie content.
If you know the source type of the
movie, setting the value of this
property before playback begins can
improve the load times for the movie
content. If you do not set the source
type explicitly before playback, the
movie player controller must gather
this information, which might delay
playback.
Related
I've been using the React Native Video module and its working great, however I need the video on playback end to automatically rewind back to the beginning. The video instance has the option to use:
onEnd={this.onEnd}
To call a function when video playback finishes, and also seems to have this function:
seek(seconds)
But I'm not sure how its used exactly. I need to set the video to 0 time index at playback end.
If you want to start playback again immediately, you can you use the 'repeat' property. If you really just want to reset it without playing, then you need to use seek(). But as far as I know the video component doesn't expose the seek function of the underlying video player directly, but via it's refs. You can use
myVideo.refs.node.seek(0)
where myVideo is a reference to your video component.
I am creating a radio streaming app with play, pause and volume slider.
I have implemented volume slider using MPVolumeView but unfortunately it is not working.
Can any one please let me know the correct code so that the volume slider will work in my app. I have used MPMoviePlayerController, AVPlayer, AVAudioPlayer.
Sounds as if you missed an important part of Apple's documentation;
Working with Movies and iPod Music
I am suspecting that you are using both, AVAudioPlayer and MPMoviePlayerController together and that you have setup some audio session attributes to get that working properly. Now when doing so, you may want to tell MPMoviePlayerController to use that session / or not.
Using the Media Player Framework Exclusively
If your application is using a movie player only, or a music player
only—and you are not playing your own sounds—then you should not
configure an audio session.
If you are using a movie player exclusively, you must tell it to use
its own audio session, as follows:
myMoviePlayer.useApplicationAudioSession = NO
If you are using a movie
player and a music player, then you probably want to configure how the
two interact; for this, you must configure an audio session, even
though you are not playing application audio per se. Use the guidance
in Table 6-1.
I am using AVPlayer to play videos. The lenght of them is short, 2-5 second. They are played in a random order. The problem is, when changing video, and a new video starts to play, the device lags for a very short time, but i wan't the change to be fluid. Is there a way to preload videos with AVPlayer?
Try using AVQueuePlayer. I am assuming that what you described as a lag, in fact is the pre buffering delay. This should be minimized or actually entirely be gotten rid of when using AVQueuePlayer as that baby will buffer the next AVPlayerItem while playing the current one.
From the AVFoundation documentation:
On iOS 4.1 and later, you can use an AVQueuePlayer object to play a
number of items in sequence (AVQueuePlayer is a subclass of AVPlayer).
Also see Mihai's answer on Pre-buffering-for-avqueueplayer.
In my application I have to play videos of type .m3u8. These are not local video. I can do it either with MPMoviePlayerController or AVPlayer. I also have to ignore userinteraction when some advertisement is getting played. Also I have to give an option for Airplay.
Which player should I use?
Thanks.
AVPlayer has a subclass called AVQueuePlayer which allows you to play back several movies in a sequence. It would be helpful for you for your ads. AVplayer currently does not support Airplay.
From iOS 5 AVplayer has an option to start playing back automatically on Airplay by enabling usesAirPlayVideoWhileAirPlayScreenIsActive property (if allowsAirPlayVideo is also enabled)
As far as I know you cannot play on airplay automatically with MPMoviePlayer, user has to tap on the Airplay icon.
Hi using MPMoviePlayerController to stream video into the app. However, it takes a long time to load and I want to be able to pre-buffer the video. Any suggestions?
Use
[MPMoviePlayerControllerInstance prepareToPlay]
as soon as you know that the user
might start playback of a movie. You
might also want set
MPMoviePlayeController.autoPlay to
something that fits best, depending
on your application.
From Apple's Documentation;
This method is called
automatically when you call the play
method. Calling it before you call
play gives the receiver a chance to
prepare items sooner and may result in
decreased latency when starting
playback. However, calling this method
may also interrupt any active audio
sessions.
Make sure your HTTP stream contains
a low bandwidth alternative using
less than 64Kbps (audio and video combined). Note that the
MPMoviePlayerController usually
starts buffering the low rate
playback index profile before
raising the bar and attempting to
load higher bandwidth profiles. It
will be prepared to play once it has
a few seconds worth of movie data.
Use the
MPMoviePlayerController.movieSourceType
property when initializing your
player to cut down the media
recognition delay.
From the MPMoviePlayerController
Class Reference:
The default value of this property is
MPMovieSourceTypeUnknown. This
property provides a clue to the
playback system as to how it should
download and buffer the movie content.
If you know the source type of the
movie, setting the value of this
property before playback begins can
improve the load times for the movie
content. If you do not set the source
type explicitly before playback, the
movie player controller must gather
this information, which might delay
playback.