Unable to login and register product with USB connect. Can't get TranscodedVideoFeed via USB

[oscarmore2]

Hi I was downloaded the project and it was build successfully. However while I run the project in the phone, the aircraft can not be discovered, and it toasted "Register sdk fails, check network is available". and I check the network connection which had connected to Wifi.

I am in China, my phone is Xiaomi, but I also tried Smartisan and it has same problem. I was ok to log in my user name in Dji go APP, but same set up does't works for this version 4.8 project.

PS:

I also tried to use an existing Logged-in project to try to get videofeeder via TranscodedVideoFeed, My connection with the pad is also usb, but the Feeder callback doesn't call at all. and it has a log told me that: LocalConnector: Cannot connect the wmserver-data-reciever from time to time, don't know if this log is relateded to usb connection.

Wait for your reply.

• Product Marvic Pro & Marvic Pro Zoom
• Android Studio: Latest
• SDK Version: 4.8.1

[oscarmore2]

2018-12-01 15:05:54.520 17582-17598/? W/LocalConnector: Cannot connect the wmserver-data-reciever 2018-12-01 15:05:55.329 29671-29677/com.flouav.flopilot I/zygote64: Do full code cache collection, code=502KB, data=312KB 2018-12-01 15:05:55.336 29671-29677/com.flouav.flopilot I/zygote64: After code cache collection, code=453KB, data=242KB 2018-12-01 15:05:55.361 1683-24092/? I/WifiService: getDhcpInfo uid=10062 2018-12-01 15:05:55.362 1683-24092/? I/WifiService: getConnectionInfo uid=10062 2018-12-01 15:05:55.363 1683-24092/? I/WifiService: getWifiEnabledState uid=10062 2018-12-01 15:05:55.365 1683-24092/? I/WifiService: startScan uid=10062 2018-12-01 15:05:55.368 14464-14491/? I/NetworkLocationManager: start get current Location 2018-12-01 15:05:55.369 14464-14464/? I/MetokLocationProvider: report position from 2 2018-12-01 15:05:55.373 1683-3043/? D/NpProxy: handleMessage what - 4 2018-12-01 15:05:55.374 1683-3043/? D/NpProxy: Location: Location[network 31.198794,121.432881 hAcc=40 et=+3d3h31m37s680ms vAcc=??? sAcc=??? bAcc=??? {Bundle[{networkLocationType=wifi, source=2}]}] 2018-12-01 15:05:55.374 1683-3043/? V/LocSvc_HIDL_OsNpGlue_jni: [onJavaLocationChanged][177] [HC] =>> [HS] 2018-12-01 15:05:55.381 753-753/? V/LocSvc_HIDL_IzatOsNpGlue: [locationChanged][47] [HS] <<<<= [HC] 2018-12-01 15:05:55.521 17582-17598/? W/LocalConnector: Cannot connect the wmserver-data-reciever

[Michael-DJI]

@oscarmore2 hey, for register issue, the http connection of register will have some problem occasionally when using 4G of china mobile, please try to connect to a wifi network and retry. for video issue, could you please let me know what feature you were developing? for Mavic 2 Pro or Mavic 2 Zoom, you need firstly display it in a surface or textureView, after that you could get the video data from TranscodedVideoFeed, because the data is generated by a re-encoder, so you have to display it first then the re-encoder could encode the the video to h264 stream data.

[oscarmore2]

[Update]: I Pulled the lastest version of Video decoding simple, which includeded dji sdk 4.10. Then build a app to my huwawei m6 pad, and connect it to marvic pro, I found the listener from provideTranscodedVideoFeed() feeder is never invoked at all, and the demo custom decoder surface is totally black. But when I connect to marvic 2, the provideTranscodedVideoFeed() feeder works fine, I could easily fetch the raw video data for pushing or caching. https://cdn.flouav.com/screenshot/WechatIMG1350.jpeg

the code of provideTranscodedVideoFeed() in MainActivity of this project:

if (demoType == DemoType.USE_SURFACE_VIEW_DEMO_DECODER) {
        if (VideoFeeder.getInstance() != null) {
                standardVideoFeeder = VideoFeeder.getInstance().provideTranscodedVideoFeed();
                standardVideoFeeder.addVideoDataListener(mReceivedVideoDataListener);
        }
}