Youtube saying "Please use a keyframe frequency of four seconds or less."

[al7861]

Hello

OK so I watched a popular YouTube video of how to create a 24/7 YouTube Livestream (link below) where he used Linode to connect to Ant Media Server.

https://www.youtube.com/watch?v=0scjy6Zxzwcwed

The issue I'm having is that YouTube says I have poor stream health - see message below:

"Please use a keyframe frequency of four seconds or less. Currently, keyframes are not being sent often enough, which can cause buffering. The current keyframe frequency is 6.8 seconds. Note that ingestion errors can cause incorrect GOP (group of pictures) sizes."

How can I configure this in Ant Media whilst connected to Linode?

Please let me know.

Thanks!

Al

 

 

[Yash]

Hi @al7861
I hope you are doing well.
As I checked the support ticket, my colleague has already suggested a solution to you for encoding the file with a specific key frame.

For users who are facing the same issue.

You can use ffmpeg to change the key frame interval. Below command will encode the file with key frame interval of 2.

 

ffmpeg -i input.mp4 -qscale 0 -g 2 outputFile.mp4

 

[al7861]

Thanks @Yash - I have another issue.

 

Youtube is now saying "The stream's current bit rate (7571.03 Kbps) is higher than the recommended bit rate. We recommend that you use a stream bit rate of 4500 Kbps."

 

Now I did some research and found a command using ffmpeg to set the video to 4500Kbps:

 

ffmpeg -i myvideo.mp4 -b:v 4500K outputFile.mp4

 

When I upload the newly configured video to Ant Media Server and then broadcast it live on Youtube it still says that my bit rate is high - so is there a setting within Ant Media Server to ensure that the video is set to 4500 Kbps because it looks like it just ignores the video's bitrate.  The keyframe frequency was sorted but the bitrate isn't.

 

Please let me know if you know how to fix this issue.

Edited December 27, 2022 by al7861

[Burak]

Hi @al7861,
Normally input bitrate is not changed on Ant Media unless you have adaptive settings. Have you enabled adaptive setting?