B Frames not handled correctly in V2 OBS

[Jan Petersen]

Hi 

I found out that AMS v2 does not handle B frames correctly. 

I'm streaming from OBS, regardless of quality settings,  Key interval =1 and if I set Max B-frames >0 then the stream jitters as if it's processing the B frames as I (key) frames. setting it to 0 fixed the jittering.

/Jan

[Ant Media]

Hi Jan Petersen,

yes, you need to select Baseline profile when using OBS which has no B-frames when streaming. In the streams which should be published to OBS, there should be no B-frames. Otherwise WebRTC protocol which is developed for low latency would not be able to handle B-frames which are dependent to other later frames and it will cause jittering. This is known and it is not caused by Ant Media Server but by WebRTC standard.

Best Regards,

Can

PS: Free or Paid one-on-one support and consultancy for your streaming project, please book at https://calendly.com/antmedia/

On Tue, 16 Jun at 6:37 PM , Jan Petersen <jpcopenhagen@gmail.com> wrote:

Hi 

I found out that AMS v2 does not handle B frames correctly. 

I'm streaming from OBS, regardless of quality settings,  Key interval =1 and if I set Max B-frames >0 then the stream jitters as if it's processing the B frames as I (key) frames. setting it to 0 fixed the jittering.

/Jan

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