[Live-devel] Streaming in wireless ad-hoc network

[Felix Radensky]

Hi Tayeb,

Thanks for your input, I'll definitely try bridging.
My kernel is 2.6, and adding brctl to the file system is not big deal.

The wireless card on my device supports 802.11n, but so far I've only
tried 802.11g, and both ends were able to synchronize at 54MBit/s.
I think it should be sufficient, the video bandwidth is around 2Mbit/s.

Felix.

On 10/07/2012 08:49 PM, Meftah Tayeb wrote:
> hello
> what is your embedded distro ?
> please try to create a bridge and atach your wlan interface to it
> so the ip address will be in the bridge
> if you have a 2.6 kernel, IGMP snooping will automaticaly be inabled 
> in your bridge
> this may 90% solv your multicast over wireless issue
> i am streaming 20channels over wireless but encoded in H.264/AAC 
> using MumuDVB without any issue at all
> 802.11N is recomanded but 99.99% will not work in ad-hoc mode
> thank you
> ----- Original Message ----- From: "Felix Radensky" 
> <felix at embedded-sol.com>
> To: "LIVE555 Streaming Media - development & use" 
> <live-devel at ns.live555.com>
> Sent: Sunday, October 07, 2012 9:12 PM
> Subject: [Live-devel] Streaming in wireless ad-hoc network
>
>
>> Hi,
>>
>> I'm having a real trouble getting live555 based streamer work in 
>> wireless
>> ad-hoc network. The same streamer works fine in wired and managed
>> wireless networks.
>>
>> My setup consists of embedded device and Linux based laptop.
>> The live555 application runs on embedded device and streams
>> live H.264 video over multicast. Video resolution is 640x480, frame
>> rate is 30 FPS. VLC on laptop connects to streamer but fails to
>> display any video. I get the following errors:
>>
>> main debug: `rtsp://11.0.0.30:8554/testStream' successfully opened
>> live555 debug: tk->rtpSource->hasBeenSynchronizedUsingRTCP()
>> main debug: ES_OUT_RESET_PCR called
>> main debug: Buffering 0%
>> main debug: Buffering 5%
>> main debug: Buffering 19%
>> main debug: Buffering 50%
>> main debug: Buffering 74%
>> main debug: Buffering 83%
>> main debug: Buffering 94%
>> main debug: Stream buffering done (1262 ms in 0 ms)
>> packetizer_h264 warning: waiting for SPS/PPS
>> packetizer_h264 warning: waiting for SPS/PPS
>> packetizer_h264 debug: found NAL_SPS (sps_id=0)
>> packetizer_h264 debug: found NAL_PPS (pps_id=0 sps_id=0)
>> main debug: Decoder buffering done in 1 ms
>> main error: ES_OUT_SET_(GROUP_)PCR is called too late (pts_delay 
>> increased to 1200 ms)
>>
>> Streaming from file using testH264VideoStreamer works fine.
>>
>> Any idea what can be wrong with my application would be greatly 
>> appreciated.
>>
>> Thanks.
>>
>> Felix.
>>
>>
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> signature database 7404 (20120821) __________
>
> The message was checked by ESET NOD32 Antivirus.
>
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