Datavideo NVS-40D, Instruction Manual

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Step 6. Set the GOP. The recommended GOP values for the Youtube platform are
shown as following table.
Frequency for playing the I Frame (Key Frame): The recommended setting is 2
seconds and this value must not exceed 4 seconds.
The setting values for the 2 seconds I Frame Interval are shown as following table
.
Resolution and Frame Rate GOP Value
1080P@50 GOP=100
1080i@50 GOP=50
1080P@60 GOP=120
1080i@60 GOP=60
1080P@25 GOP=50
1080P@30 GOP=60
5.3.2 Important Notices for Setting the Encoder (Take Facebook Platform as an
Example)
If users want to stream at the Facebook Platform, please follow following important
Notices for streaming by the Facebook Platform.
The recommended upper limit for the Video Bitrate (bps) setting is 4000kbps
(4mbps).
The recommended upper limit for setting the Resolution option is 720p (1080 x 720).
The upper limit for setting the Frame Rate is 30fps.
During the streaming period, the I-Frame must be sent in every 2 seconds. (Key
Frame)
.
The title must be within 255 characters or the streaming will be failed.
The Facebook platform supports for H.264 encoded video and AAC encoded audio
only.
If the resolution for the video source is 1280*720P@30, it is fine to set the resolution
at “Same as Input”.
If the source resolution is 1280*720P@60/50, the setting for frame rate must be
changed to 30 or 25.