Avoid AudioEncoder initialization on an Video only stream

[hdralexandru]

Is it possible to avoid the MediaCodec's initialization when using NoAudioSource?

I am trying to implement the RTSP-Server on a custom Android OS. When I call prepareAudio, I get the following error:

02-10 17:34:14.300 25930 26066 I MediaCodec: MediaCodec will operate in async mode
02-10 17:34:14.301 25930 25930 E AudioEncoder: Create AudioEncoder failed.
02-10 17:34:14.301 25930 25930 E AudioEncoder: android.media.MediaCodec$CodecException: Error 0x80001001
02-10 17:34:14.301 25930 25930 E AudioEncoder: 	at android.media.MediaCodec.native_configure(Native Method)
02-10 17:34:14.301 25930 25930 E AudioEncoder: 	at android.media.MediaCodec.configure(MediaCodec.java:2176)
02-10 17:34:14.301 25930 25930 E AudioEncoder: 	at android.media.MediaCodec.configure(MediaCodec.java:2092)
02-10 17:34:14.301 25930 25930 E AudioEncoder: 	at com.pedro.encoder.audio.AudioEncoder.prepareAudioEncoder(AudioEncoder.java:95)
02-10 17:34:14.301 25930 25930 E AudioEncoder: 	at com.pedro.library.base.StreamBase.prepareAudio(StreamBase.kt:142)

My stream is video only. For VideoSource, am I using a clone of BitmapSource, but instead of a single image, I am looping through 20 bitmaps.

When I init the server, I do

 RtspServerStream(
    context = context,
    port = 1935,
    connectChecker = connectChecker,
    audioSource = NoAudioSource(),
    videoSource = BitmapSource(context),
)
rtspServer.setOnlyVideo(true)
prepareAudio(
    sampleRate = 0, isStereo = false, bitrate = 0,
    echoCanceler = false, noiseSuppressor = false
)

However, the project works perfectly on a normal mobile AndroidOS (tested on Android 15 on a Samsung and Android 14 on a Pixel5, tested on an Pixel8 emulator - all work). I can connect to them through VLC flawlessly.

Basically I'm trying to disable audio altogether.
Is it possible to avoid the call to prepareAudioEncode ?

[pedroSG94]

Hello,

I have no plan to do it because the idea is be able to change the audio source on fly so the audio codec initialization is required to work.
I recommend you use a real value in the prepareAudio parameters instead of set invalid values. Try with samplerate 32000 and bitrate 128000