Re: résolution webcam

But a resolution of 704x576 is already a good resolution, DVD quality, 
and perhaps sufficient for my use, and anyway I will use it :)


Le 25/02/2016 09:38, adhesionlistedediffusion a écrit :
> Hello,
>
> Thank you very much Bret for your answers. Yes indeed, you are right 
> to point the specifications, there is a limitation of 704x576 with 
> version 4.0.
>
> My material can support better quality : data transmission is LAN 
> 100Mb/s or internet 8Mb/s SDSL, and pc HP Probook 450 G1 bought in 
> 2014. The webcam can give a resolution up to 1920 x 1080 pixels. With 
> cheese, recording a video at this resolution is rather fluid, it's 
> quite ok. (Curiously, Cheese give the possibility to choose 2304x1536 
> but it totally lags, only showing in the screen, whitout even recording).
>
> I can not use skype for reasons of confidentiality.
>
> Well, I think that I have to wait for the version 5.0. How can we get 
> news about it ?
>
> Thanks
>
> -- 
> JL
>
>
> Le 23/02/2016 19:26, Bret Busby a écrit :
>> On 24/02/2016, Bret Busby <[email protected]> wrote:
>>> On 24/02/2016, Bret Busby <[email protected]> wrote:
>>>> On 23/02/2016, adhesionlistedediffusion
>>>> <[email protected]> wrote:
>>>>> Hello,
>>>>>
>>>>> Sorry, here is the translation : in the video options of Ekiga, my
>>>>> webcam is limited to 704x576, but in the software "cheese" it can 
>>>>> reach
>>>>> 1920x1080.
>>>>> How can I have a better resolution with Ekiga ?
>>>>> Debian 8, Ekiga 4.0.1, et webcam Logitech C930e.
>>>>>
>>>>> Thanks
>>>>>
>>>>> JL
>>>> Hello.
>>>>
>>>> This is not an answer to your question, but, rather, a question of
>>>> your question.
>>>>
>>>> I have a Logitech webcam thing that shows as having 720p (1280x720?)
>>>> capability, but, with the computer or the broadband limitations, or
>>>> both, I find that I have to use it at a lesser resolution (640x480, I
>>>> think, or, less), to get some sort of fluidity and realtime movement,
>>>> otherwise, I get lagging and a series of still frames and jerkiness,
>>>> rather than fluid motion.
>>>>
>>>>  From what I understand, (and, I am quite probably wrong), the higher
>>>> resolutions are not good, for applications like Ekiga and Skype.
>>>>
>>>> I have just used cheese to record a video, with my Logitech webcam,
>>>> and vlc showed the resolution to be 1280x960, and the motion was jerky
>>>> and not fluid.
>>>>
>>>> I do not know what hardware, you have, or, what your data transmission
>>>> rates are like, but this computer that I am using, has an i3 CPU, and,
>>>> I think, an nVIDIA graphics thing with about 512MB of RAM (on the
>>>> graphics thing - the computer has, I think, 16GB of RAM), and I have
>>>> found that webcam resolution of more than 640x480, is too much for
>>>> getting useful video.
>>>>
>>>> So, I am wondering whether it is worth you trying to get the high
>>>> resolution of your webcam capability (1920x1080), for video, if the
>>>> video processing, would not give you fluid motion for that resolution.
>>>>
>>>> You may have hardware, and, data transmission rates, that can
>>>> accommodate the high resolution capability of your webcam, and give
>>>> you a sufficient fps, to attain adequate fluidity of motion - I do not
>>>> know.
>>>>
>>>> At this stage, I have not yet, been able to effect a successful video
>>>> call with Ekiga - I have only been able to effect successful video
>>>> calls, with skype.
>>>>
>>>> -- 
>>>>
>>>> Bret Busby
>>>> Armadale
>>>> West Australia
>>>>
>>>> ..............
>>>>
>>>> "So once you do know what the question actually is,
>>>>   you'll know what the answer means."
>>>> - Deep Thought,
>>>>   Chapter 28 of Book 1 of
>>>>   "The Hitchhiker's Guide to the Galaxy:
>>>>   A Trilogy In Four Parts",
>>>>   written by Douglas Adams,
>>>>   published by Pan Books, 1992
>>>>
>>>> ....................................................
>>>>
>>> I just checked, with changing the configuration of cheese, to get a
>>> 640x480 videoclip, and, while the voice/video sync, was not quite
>>> right, the motion was sufficiently fluid, and I could not get that,
>>> with the 1280x960 resolution.
>>>
>>> Also, in using the 1280x720 resolution, I found that the video and the
>>> voice/video sync, seemed to work okay.
>>>
>>> I do not know - maybe, your computer and your bandwidth, may be able
>>> to work well enough, with your 1920x1080 resolution, in video.
>>>
>>>
>> Also, I note that what you want, is apparently beyond the capability 
>> of Ekiga.
>>
>> In checking in my Ekiga on this computer (Ekiga v 4.0.1), the highest
>> available video resolution, is 704x576.
>>
>> In checking the specifications for Ekiga, at
>> http://ekiga.org/ekiga-softphone-features
>> is
>>
>> "
>> Video  Version 4.0
>>   High Framerate support (up to 30 fps)
>>   Configurable Resolution, up to DVD quality (from 176x144 to 704x576)
>> "
>>
>> so, the 704x576 resolution, is, apparently, the highest resolution,
>> currently available for Ekiga.
>>
>> I think that skype might be able to give the resolution that you seek
>> - I do not know. I have skype 4.3 on this computer, and I can not find
>> how to adjust the video resolution from the webcam. From memory, I had
>> been able to do that, when skype 2.2 beta for Linux, was available,
>> years ago, but I can not find how to do it, now.
>>
>
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