Re: [Motion-user] MJPEG palette: Corrupt JPEG data extraneous bytes

[corentin b. <cor...@gm...>]

Sorry, I overlooked your second email Bob, I'll try to set everything like
you and keep you posted.

Corentin

2012/9/6 corentin barbu <cor...@gm...>

> Hi,
>
> I finally get that working, mjpg-streamer is working fine, but getting it
> passed to motion doesn't work yet. Do I have anything to change when
> switching to webcam but commenting :
>
> videodevice /dev/video0
>
> and adding:
>
> netcam_url http://localhost:7081/?action=stream
>
> in the thread files
>
> ?
>
> I'm using :
> ./mjpg_streamer -i "input_uvc.so --device /dev/video1" -o "output_http.so
> -w ./www -p 7081"
>
> Thanks again for all your help,
>
> Corentin
>
>
> happens over the WiFi link. I only ever see it on 2 of the cameras that
> connect that way!
>
>>
>> I can think of a couple of scenarios that might cause it. One will
>> obviously be a time-out situation where the TCP layer re-sent data is just
>> ignored. I just haven't delved into the motion netcam code to find out.
>> Keep in mind too that there isn't much point doing retries over streaming
>> audio and video generally. For viewing purposes a lost frame can be pretty
>> well ignored, but of course for motion it ends up as a changed image
>> detection event.
>>
>> If I get real excited I may Wireshark the stream to see what's happening.
>> It may even help to fiddle with frame rates. A general purpose buffer delay
>> might also fix it. Its not exactly high priority though. It might even be
>> easier to go and make an acquaintance with the owner of the interfering
>> system and ask them to set their channel statically!
>>
>> I would be extra worried if Wireshark proved the same frame was (say)
>> being re-sent 20 times. That would explain the latency as well.
>>
>> Bob
>>
>>
>> On 04/09/12 23:17, corentin barbu wrote:
>>
>> Hi Andrew and Bob,
>>
>> Thank you so much guys for the details. As for mpg-streamer I had tried
>> with the .deb but it doesn't install ... I'll give a shot to the
>> compilation from sources.
>>
>> One thing I don't understand is how you connect the interferences on the
>> image with the WiFi. Does it affect even the cam not connected through
>> WiFi?
>>
>> Corentin
>>
>>
>>
>>
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>>
>
>
> --
> ___________________
> Corentin Barbu-Covantes
> http://scholar.google.com/citations?hl=en&user=sxDMRdQAAAAJ
> "For what does it profit a man to gain the whole world, and forfeit his
> soul?" Mark 8:36
>



-- 
___________________
Corentin Barbu-Covantes
http://scholar.google.com/citations?hl=en&user=sxDMRdQAAAAJ
"For what does it profit a man to gain the whole world, and forfeit his
soul?" Mark 8:36