[Live-devel] Axis multicast crash

[Komal Dhote]

AXIS camera doesn't give NALU 7 and NALU 8. So RTSP has no issues with the
streaming only the parsing and decoding at the receiving end have issues.
Try to see what is the NALU unit type you are receiving from the url.
Thanks and Regards,
Komal


On Tue, Jun 7, 2011 at 7:18 PM, Stephane Pigeon <
stephane.pigeon at visualdefence.com> wrote:

>  Hello,
>
>
>
> Our company has been using the Live555 streaming library in a custom
> DirectShow source filter for well over a year. We handle cameras from many
> vendors, in multicast and unicast, without issues. However, we noticed a
> problem with Axis cameras, configured for streaming H264 in multicast:
>
>
>
> - When multiple connections are attempted simultaneously on different Axis
> devices (via multiple instances of the source filter), sometimes the client
> application will close unexpectedly. It's a silent shutdown; no exceptions
> are caught by the source filter/Live555 lib; no errors are logged.
>
>
>
> Further observations:
>
>
>
> - More simultaneous connections = higher incidence of crash
>
> - It happens sometimes in unicast, but very rarely.
>
> - It happens regardless of the other filters in the DirectShow graph
> (CoreAVC, ffdshow, DivX, VMR7, VMR9, EVR, etc).
>
>
>
>
>
> Admittedly, the crash could happen in our own source filter code and be
> unrelated to Live555... but our source filter code is unaware of specific
> camera vendors...
>
> Also, we are using the Live555 streaming library from 2009, but it
> contains the typical fixes for Axis (ex. getting the ports/addresses from
> RTSP SETUP, not from RTSP DESCRIBE).
>
>
>
>
>
> This is really puzzling... I really hope someone can help us on this.
>
>
>
> Best regards,
>
> Stephane Pigeon
>
> Senior Software Developer
>
> Visual Defence Inc.
>
>
>
> _______________________________________________
> live-devel mailing list
> live-devel at lists.live555.com
> http://lists.live555.com/mailman/listinfo/live-devel
>
>
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