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March 16, 2012
Question

Video Breakup Issues

  • March 16, 2012
  • 1 reply
  • 911 views

Hi,

I'm excited to say that we have video working with FMG!

At this point we are experiencing a problem that I'm hoping for some insight into: The video breaks up a lot. 

We have tried adjusting many of the values in rtmp.xml.  We have tried all the different options in videoqualitylevels.xml.

It is definitely a bit better when using the "low" profiles and worse with the "high" profiles but we do not think it is a bandwidth issue as we can pull a lot more bandwidth from the same server if we pull a high bandwidth VOD or live stream originating from FMLE.

We are seeing the following in our SipLogs.

03:07:14.817 -ERROR  - PARSER       - SIP Parser Error : Syntax Error, line 1, column 16 of the header value

03:07:14.817 -ERROR  - PARSER       - SipParserStartParsing - Syntax Error - The parser failed to parse line 1

03:07:14.817 -ERROR  - MESSAGE      - ParseHeader - header 0x0x7f29a496ecd0. Failed to parse stand-alone header. (rv=-3000)

03:07:14.817 -ERROR  - MESSAGE      - MsgParserParseStandAloneHeader - Failed to parse header 0x0x7f29a496ecd0

03:07:14.817 -ERROR  - TRANSACTION  - RvSipTransactionMake - Transaction 0x0x69cbc0: Failed to parse from header - bad syntax (rv=-3000)

Could this be related?

If not, what are these errors, and how can we solve them?

Are there other approaches to solving video-breakup isues?

Sincerely,

Greg P.

This topic has been closed for replies.

1 reply

March 16, 2012

Greg,

            This is a known issue. The severity of experience decreases with lower compexity video & frequency matches with keyframe. Apart from that, not much tweak are possible at this point. We are planning to fix it in upcoming releases.

What type of call your usecase involves, an interactive video call or one way video delivery?

-Pankaj

March 21, 2012

For one way video delivery where razor sharp delay is not a requirement; setting non-zero NetStream buffer on client have been found to be quite effective workaround for time being.