BAD results with H.264 and 1080p source video #2990

Daniel B

unread,

Mar 15, 2021, 9:43:47 AM3/15/21

to Ant Media Server

https://github.com/ant-media/Ant-Media-Server/issues/2990

We are seeing this same issue. We had to disable all adaptive streaming because of this. Is there anything we can do to fix it or are you guys working on it? Any ETA if that's the case?

Dhimant Bhayani

unread,

Mar 15, 2021, 10:36:45 AM3/15/21

to Daniel B, Ant Media Server

I have reported video stutter issue many months back. For a different scenario but underlying cause may be similar:

(1) Anytime ABR is on or VP8 to H.264 transcoding is happening. Could also happen H.264 to VP8

(2) Real reason most likely is that VP8 input is a Variable Frame Rate (or Bit Rate or Reference frames coming in with long interval AND H.264 encoder can not track this input change.

VP8 video should be decoded and converted to 30FPS and then encoded to H.264 may eliminate jitter if what I am hypothesizing is true.

Did you test iPhone to Chrome video call? Look carefully and you may find the video Jitter.

Sent from my iPhone

On Mar 15, 2021, at 6:43 AM, Daniel B <dan...@beardfam.com> wrote:

https://github.com/ant-media/Ant-Media-Server/issues/2990

We are seeing this same issue. We had to disable all adaptive streaming because of this. Is there anything we can do to fix it or are you guys working on it? Any ETA if that's the case?

--
You received this message because you are subscribed to the Google Groups "Ant Media Server" group.
To unsubscribe from this group and stop receiving emails from it, send an email to ant-media-serv...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/ant-media-server/60bc1a5e-19ea-4d6c-841f-02170f2ba11en%40googlegroups.com.

Enes Kuluk

unread,

Mar 15, 2021, 11:07:56 AM3/15/21

to Ant Media Server

Thank you for the report and insights. I'll notify the developers about it.

Regards,

Enes.

Daniel B

unread,

Mar 16, 2021, 10:49:05 AM3/16/21

to Ant Media Server

What I'm seeing may be a little different. I only have H.264 enabled so VP8 is not in use in my case. I can't use adaptive streaming at all. If I remove the adaptive streaming options it clears up and looks perfect but then people have buffering issues.

Daniel B

unread,

Mar 16, 2021, 10:52:40 AM3/16/21

to Ant Media Server

This is what it looks like with Adaptive Streaming 720p and 480p activated

Enes Kuluk

unread,

Mar 17, 2021, 9:29:29 AM3/17/21

to Ant Media Server

Thank you, which version you are using right now?

Daniel B

unread,

Mar 17, 2021, 10:26:06 AM3/17/21

to Ant Media Server

2.2.1 is this fixed in 2.3?

Daniel B

unread,

Mar 17, 2021, 4:37:27 PM3/17/21

to Ant Media Server

I updated to 2.3 and it seems this issue is resolved.

Enes Kuluk

unread,

Mar 18, 2021, 12:55:25 PM3/18/21

to Ant Media Server

Thats great, I was going to suggest you to upgrade the version.

Regards,

Enes.

Reply all

Reply to author

Forward