[Gumstix-users] [OT] Re: Video capture

[Simon V. <sim...@re...>]

I am working with one of those iMX dev-boards and know that
video is not a problem there:
http://www.bluetechnix.at/rainbow2006/site/tinyboards/__development_boards/__dev-i_mx31/394/dev-i_mx31.aspx

Support for the mpeg4 hardware encoder block is on its way...
maybe this helps
Simon

Cesar Maciel wrote:
> Hi Jeff,
>   I was using v4l, with an USB webcam, running ffmpeg for video capture, 
> using an avi codec. at 15fps CPU usage was around 92%, and the "q" 
> factor on ffmpeg (that indicates quality, from 0 to 28) was between 15 
> and 20.
>   I tried capturing at 25fps but the output file for some reason was 
> running at 1fps (although the size indicated  that the 25fps rate was used).
>   I tried to capture using 640x480 but not even at 10fps I could get a 
> decent video.
>   If you have other experiences, with or without gumstix, I'll be 
> interested in hearing. I am also looking for a solution on video capture.
>   regards
>   Cesar
>
>
> Jeff Tyler wrote:
>   
>> Cesar,
>>
>> How much CPU did you have left at 15fps?  I'm looking at a streaming 
>> video application myself.  Were you running VFL with a USB cam?
>>
>> JT
>>
>> Cesar Maciel wrote:
>>   
>>     
>>> Look for other solution, unfortunately. I have been playing with the 
>>> gumstix for video, and the best I could get was 320x240 at 15fps (on a 
>>> verdex 400 MHz). The lack of a fp unit makes video capture a very CPU 
>>> intensive task for the gumstix.
>>>   regards
>>>   Cesar
>>>
>>>
>>> David Reilly wrote:
>>>     
>>>       
>>>> Hi,
>>>>  
>>>> I wonder if anyone might be able to point me in the direction of a 
>>>> third party developer who has or is creating a solution around the 
>>>> Gumstix for the following requirement;
>>>>  
>>>> Capture of video or HD quality video from a lightweight lense, 
>>>> gumstick running codec to compress into mpeg4 and store on a 8Gb Sd 
>>>> card or similar. The idea is that this device would be very light, 
>>>> including power, and could be self-contained to be able to be lifted 
>>>> into the air by a remote controlled aircraft. The video could then be 
>>>> retrieved by plugging the memory card into a computer.
>>>>  
>>>> Any pointers you can give of existing products, in development 
>>>> products or developers who would be interested in creating a solution.
>>>>  
>>>> Thanks
>>>>  
>>>> Regards
>>>>  
>>>> David Reilly
>>>> (United Kingdom)
>>>>  
>>>>  
>>>>
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_______________________________________________________________________
Dr. Simon Vogl
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