Here, you will find an explanation on how the screen capture resolution works and what effects can screen resizing causes, when streaming from ViuLive.

It should be noted that when you select to share your screen, the app will take your system monitor resolution as the screen sharing resolution. So, for example, in this case I am using a 1920×1080 DELL monitor so the screen sharing resolution will be fixed to 1920×1080 and the viewer will be viewing my screensharing in 1920×1080 format.


Figure below shows the viewer’s side which is how the viewer is seeing your shared screen, in the case we are showing a 1920×1080 streamed image. 

streamer point of viu

Now, consider what will happen if you resize the window?
Note, no matter how much the shared window is resized, the app will still keep its original system monitor resolution, in this case 1920×1080.

The pictures below are examples of mismatch happening between streamer and the viewer. In this case, the streamer is streaming a 960×540 resolution but the viewer is getting 1920×1080, Why?
This issue is caused due to the streamer started to stream with 1920×1080 resolution, then resized his shared window (PDF file) later. This change in window resizing will cause the streamer side to reduce the overall resolution but the screen sharing section remains at 1920×1080, therefore causing the streaming window to be stretched on the viewer side.

studio and final output view

To avoid such issues it is advised to follow these recommended steps:

  1. Do not resize the window while streaming. Stick to the main LCD resolution which is full screen size.
  2. Share the entire screen and not specific window, here you can resize the window during the stream, it will not affect the window resolution.