Datavideo NVS-40D, Instruction Manual

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Note: For the live-streaming, the quality of the video is the most important. So,
please make sure to set suitable resolution according to your network connection
speed to assure that the streaming video can be played smoothly. It is recommended
to test the data upload bitrates before starting the live-streaming. If users use
“Stream Now” option, it is no need for you to set your desired resolution, Framerate
and Video bitrate due to that those settings will be detected automatically by the
“Stream Now” function. If you start your live-streaming by the “Events” option, what
you need to do is to select one streaming token with variable resolutions to have the
advantage of the “Stream Now” option. Moreover, users can select their desired
resolution and framerate settings manually and then Youtube will encode your
streaming video automatically to produce multiple output formats to fit different
network speed and device demands for the audience of the live-streaming. Before
the live-streaming is started, please make sure that the test is done. The content of
the test should include the content that is similar to the live-streaming content.
During the live-streaming period, users can monitor the streaming situation and
check the error messages.
Step 2. Set the Profile Option. Due to that there is little difference for different
Profile settings. So, it is recommend to fix the Profile option at “High”.

For the HD or 720P resolution, please set the Profile at “High”.

For the 720 resolution, please set the Profile at “Main”.

For the resolution which is below the 720, please set the Profile at “Baseline”.
Step 3. Please set the Entropy option at CABAC (The recommended value of the
Yoututbe platform).
Step 4. Set the Video Bitrate (bps). Please follow following Youtube platform
recommended values for setting the Video Bitrate.

1080P
：
3,000 - 6,000 Kbps

720p @60fps
：
2,250 - 6,000 Kbps

720p
：
1,500 - 4,000 Kbps

480p
：
500 - 2,000 Kbps

240p
：
300 - 700 Kbps
Step 5. Set the Audio Bitrate (bps). The recommended Audio Bitrate is 128K.