Re: [Gumstix-users] Video capture

[Chuck R. <shi...@ro...>]

Hi Cesar,

I, too, am trying to get video capture working on the gumstix, using  
ffmpeg. Can I ask how you were able to build ffmpeg for the gumstix?  
When I try I get:

$ ./configure --host=arm-linux
Unknown option "--host=arm-linux".

Thanks!
Chuck


On Oct 30, 2007, at 10:50 AM, 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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