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YITechnology / YIOpenAPI

YI Open API provides mobile SDKs and reference designs for software developers and hardware makers to build cool apps and products with YI 4K Action Cameras
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Video preview lag #72

Open Egorkansk opened 6 years ago

Egorkansk commented 6 years ago

hello, tell me please why video preview is laging (video delay 5 seconds), in your sample app, but oficial yi action app is not laging(about 600 ms)? How i can set low preview resolution or bitrate to fix this problem?

entalent commented 6 years ago

I decompiled the official app, and found that the official app used a totally different way to play the RTSP stream of camera preview. The sample app simply uses VideoView, while the official app uses a 3rd party library (I searched for that package name on google and the library used in official app seem to be in https://github.com/fenghxfriend/Android-RTSP-Player). The preview lag of VideoView seems to depend on device model... my MI 5 has a huge lag of 11 seconds, but a MI MIX 2 has a lag of about 1s, both using the sample app. I decided to use other RTSP library to play preview.

Egorkansk commented 6 years ago

Thank you, for answer

x4080 commented 6 years ago

Is it possible to zoom using video preview ? I'm thinking using cctv zoom lens, and video preview zoom for adjusting focus on the fly