Recording the screen on 1280x720 looks difficult to work and scaling the software window seems inconvenient.
Please guide what to do and also suggest a good rendering setting which saves the bandwidth consumption for me as well as for viewers.
If 1280 x 720 is the desired output (as it is for me), then you need to shoot that as much as possible. On the rare occasion where something falls outside that view, I will move my 1280 x 720 frame (or use a smaller size) and shoot that element as an insert shot to edit in later.
When you shoot at one size and then ask the program to render output at a different size, some math is introduced by the conversion that can compromise the video quality unnecessarily.
Producing it at 1280 x 720 will cause distortion. 1280 x 720 is a true 16 X 9 aspect ratio and the 1920 x 1050 video will be stretched out of proportion in order to fill those dimensions.
If you keep the aspect ratio locked when you select a 1280x720 production there will be small black bars appearing at the top and bottom of your video but the video will still be pretty sharp.
The rule of thumb goes like this.
Always record, edit and produce using identical video dimensions to achieve the best results. Any time you change this there will some loss of quality.
Are you recording at 1050 to hide the taskbar? Because you can set the taskbar to auto-hide and record at full screen without capturing it. Although when you hover your cursor at the bottom of the screen it will pop up every-time.
When you produce your video at 1280x720 "Although it's not ideal"at least the aspect ratio will not be affected. That will produce a much sharper video regardless of the fact that it's been reduced in size.Plus, no black bars will appear.
To auto-hide the taskbar see image below, Click to enlarge.
If you still want to record at 1280x720 and view your applications in full screen mode while recording you can.
Just change your monitors resolution using Windows settings to 1280x 720 for recording. Then resize your applications to fill the entire screen. See Image below, click to enlarge.
The monitors image will be a little soft in appearance to you but you will see what you are doing much easier as a result.
The recording produced is 100% digital and isn't actually captured from the monitor itself. The monitor lets you select the recording area but it isn't like an actual camera involved so it's all recorded behind the scenes to a file.
I used that technique regularly when computer processors were slow and full HD videos were more difficult to host.
It works great, Joe