Video preview lag

[Egorkansk]

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]

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]

Thank you, for answer

[x4080]

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