I create a new receiver for my iOS application.
I have a video (DRM) with a few audios and text tracks
If I change audio track nothing will happen.
IF I change it manually like audioTracksManager.setActiveById(event.activeTrackIds[1]); - audio changed, but the button for changing tracks will be disabled
Can anyone help me?
solved by useLegacyDashSupport: true
Related
Every time I'm working on a Core Audio application, specifically one that utilizes real-time audio via the remoteIO audio unit render callbacks, the moment I start the audio unit engine running whatever music I am playing via youtube or itunes is muted. I must reload the youtube page or reset my system preference audio settings to get sound back. Is there a solution to this?
Set the mix-with-others property on the Simulator's RemoteIO Audio Unit before starting it. Also enable a proper AVAudioSession category.
I'm trying to implement subtitles on a Chromecast Android app but I don't see a way to add the tracks after the media is already playing. Am I missing something or is that not possible? I'm pretty sure I've seen other apps doing it.
Thanks.
You cannot add tracks after a media is loaded; you need to either add the tracks before loading the media or add and then reload the media
I am using video toolbox in iOS8 to play an h264 stream along with a PCM audio stream. Video is displayed fine as long as I dont start the audio stream. As soon as I call AudioQueueStart, all enqueueSampleBuffer calls stop displaying video and prints the error "Ignoring enqueueSampleBuffer: because status is "failed"".
There are no errors returned from CMBlockBuffer calls. enqueueSampleBuffer doesnt return anything and hence I cant write a code to recreate video layer again on this error.
This only happens on iOS device and not on simulator. Audio and video plays perfectly fine on Simulator. I run Audio and Video on separate threads such that one doesnt block the other. Has anyone faced the same issue?
The problem was happening because I had the mute switch on iphone turned ON.
I used AVAudioSessionCategoryPlayback for my audio session to overcome this.
This problem is resolved.
I'd like to know if it's possible to grab snapshots from previously recorded videos. Those videos are recorded in the app itself.
By the way, I'd like to grab the snapshot from a video file saved in IsolatedStorage without having to play the video.
Is it possible? If so, how can I do it?
Cheers,
Rafael
I am not aware of an official platform feature to do this. However, if the video file is within your app's isolated storage, you might be able to:
Send the video to a server to do the processing
Add codecs/C# code to your app to process the raw MPEG4 frames.
Try using WriteableBitmap to capture a specific frame when using the media element. Since most media is handled in hardware, however, it is possible that the frame will be blank.
I solved the problem by creating the thumbnail while recording the video (captureSource.CaptureImageAsync()). To do that, I used the same instance of the CaptureSource I'm using to record the video.
In my application i am playing an audio file (let it be .mp3) using MediaPlayerLauncher. File is downloaded from network and stored in IsolatedStorage.
I managed to play the audio but it was a bit disapointing to see that there is absolutly no details about the played track.
Is there a way to show picture and/or track name when launched with MediaPlayerLauncher? Or am i forced to use MediaElement?
Unfortunately, if you're just playing an audio stream using the MediaPlayerLauncher there si no way to specifyu additional (meta) data for the launcher to also display.
If you want additional information displayed then you'll need to create the UI yourself and play the track via a MediaElement (or background audio).