Android native webrtc app stream quality -

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i have problem android application using webrtc. in general working correctly on devices quality of stream terrible. using io.pristine:libjingle:9127@aar lib establish webrtc connection - compiled version of official webrtc android lib.

for example on nexus 5 video quality awesome 20-25% usage of cpu. on se sp quality terrible, cpu arround 50% (so still power available). both devices working on same wifi network.

as far know webrtc should pick video quality own, there way manually ?

i use following on ios limit framerate , resolution, giving library more room scale bitrate instead. 

// initialize video constraints nsmutablearray *m = [[nsmutablearray alloc] init]; nsmutablearray *o = [[nsmutablearray alloc] init];  [m addobject:[[rtcpair alloc] initwithkey:@"minwidth" value:@"640"]]; [m addobject:[[rtcpair alloc] initwithkey:@"minheight" value:@"480"]]; [m addobject:[[rtcpair alloc] initwithkey:@"maxframerate" value:@"20"]];  // init constraints object app.videoconstraints = [[rtcmediaconstraints alloc] initwithmandatoryconstraints:m optionalconstraints:o];

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