iOS video toolbox gives "Ignoring enqueueSampleBuffer: because status is "failed""

Question

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?

Answer 1

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.