Record the screen push stream on the Android 12 device. After the stream is pulled, there is only audio but no video

[iqiluwxy]

Hello, excuse me, I have a problem. I use the display RTMP function to record the screen, push the stream on the Android 12 device, and after the stream is pulled, there is only audio but no video. I don't know what this is.

[pedroSG94]

Hello,

If you are using Display mode, did you tried using forceRender method like in the example? https://github.com/pedroSG94/rtmp-rtsp-stream-client-java/blob/master/app/src/main/java/com/pedro/rtpstreamer/displayexample/DisplayService.kt#L71 This issue maybe is related to this: https://github.com/pedroSG94/rtmp-rtsp-stream-client-java/issues/63 Try to stream in a screen that refresh continuosly like open YouTube and reproduce a video

[iqiluwxy]

Yes, I tried to use your example demo. The program ran to my Android device and started screen recording and streaming. After about 30 seconds, the screen began to appear, but the screen was colorful. Let me show you the picture.

[iqiluwxy]

My Android device is an Android box with an Rk3588 chip

[iqiluwxy]

I don't know if my device output resolution is too high, because it is 4K

[iqiluwxy]

I don't know if my device output resolution is too high, because it is 4K

[pedroSG94]

Hello, Sorry for late response. I can see that the stream result is totally green normally caused because encoding or decoding is not working fine (I think related with a problem with the chroma of YUV image).

I recommend you try this:

• Use a different player to discard VLC problems.
• Try to use other resolutions to discard encoder problems with a resoluion. 360x240, 1280x720 and 1920x1080 could be a choice.
• Try to force software video encoder using this line:

rtspCamera1.setForce(CodecUtil.Force.SOFTWARE, CodecUtil.Force.FIRST_COMPATIBLE_FOUND);

• If anything works. Show me logcat of this code to know info about your encoders:

for (String s: CodecUtil.showAllCodecsInfo()) {
      Log.e("Pedro", s);
}

I'm not sure about it because I don't understand chinese but in the image I think that you are using 640x480 so I don't understand your question about 4k resolution.