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totalfreedom  
#1 Posted : Wednesday, October 3, 2018 4:58:06 AM(UTC)
totalfreedom

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Location: Portugal

Hi there.

I'm a very happy vMix user and fan.
We are trying to reach the best image quality possible on our live streaming sessions to Facebook Live in the "encoder settings" stage.

So my question is very specific:
We use H264, 720p, 4mbps, FFMPEG. In the menu "Streaming Quality" > "Video" we than have "Profile (Baeline), "Level (3.1)" and "Preset (veryfast)". Should we change any of these 3 fields in order to improve the image quality?

We have an excellent machine running vMix - https://www.vmix.com/pro...ce-systems.aspx#obsidian - so power is not a problem!

Thank you!
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desmar  
#2 Posted : Wednesday, October 3, 2018 10:07:06 PM(UTC)
desmar

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As per Facebook

What are the video format guidelines for live streaming on Facebook?

To Live stream on Facebook, follow these video format guidelines:

Recommended max bit rate is 4000 Kbps (4 mbps).
Max: 720p (1280 x 720) resolution, at 30 frames per second.
An I-frame (keyframe) must be sent at least every 2 seconds throughout the stream.
Titles must have fewer than 255 characters or the stream will fail.
H264 encoded video and AAC encoded audio only.

https://www.facebook.com/help/1534561009906955?helpref=faq_content

totalfreedom wrote:
Hi there.

I'm a very happy vMix user and fan.
We are trying to reach the best image quality possible on our live streaming sessions to Facebook Live in the "encoder settings" stage.

So my question is very specific:
We use H264, 720p, 4mbps, FFMPEG. In the menu "Streaming Quality" > "Video" we than have "Profile (Baeline), "Level (3.1)" and "Preset (veryfast)". Should we change any of these 3 fields in order to improve the image quality?

We have an excellent machine running vMix - https://www.vmix.com/pro...ce-systems.aspx#obsidian - so power is not a problem!

Thank you!

IceStream  
#3 Posted : Wednesday, October 3, 2018 10:10:35 PM(UTC)
IceStream

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@ totalfreedom

This vMix Documentation page helps to explain those settings a little bit:
https://www.vmix.com/help21/StreamingQuality.html


Ice
daniel514  
#4 Posted : Monday, November 26, 2018 2:30:21 AM(UTC)
daniel514

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Strict CBR is important!
carsco  
#5 Posted : Monday, December 3, 2018 9:35:10 AM(UTC)
carsco

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Joined: 11/26/2018(UTC)
Posts: 20
Italy
Location: Rome

Originally Posted by: daniel514 Go to Quoted Post
Strict CBR is important!

Why?

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