résolution webcam

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résolution webcam

adhesionlistedediffusion
Bonjour,

Dans les préférences vidéos d'Ekiga, ma webcam est limitée à 704x576, or
dans le logiciel "cheese" elle peut monter à 1920x1080 (et même plus, et
effectivement la qualité est meilleure). Est-ce que je peux avoir une
meilleure résolution avec Ekiga ? Je suis sous Debian 8, Ekiga 4.0.1, et
webcam Logitech C930e. D'ailleurs, au passage, cette webcam serait moins
bien que la C920e qui supportait le H264.

Résultat avec la C930e (pas de H.264)
# v4l2-ctl --list-formats
ioctl: VIDIOC_ENUM_FMT
     Index       : 0
     Type        : Video Capture
     Pixel Format: 'YUYV'
     Name        : YUV 4:2:2 (YUYV)

     Index       : 1
     Type        : Video Capture
     Pixel Format: 'MJPG' (compressed)
     Name        : MJPEG


Merci
Bonne journée

--
JL
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Re: résolution webcam

adhesionlistedediffusion
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

Le 23/02/2016 15:57, adhesionlistedediffusion a écrit :

> Bonjour,
>
> Dans les préférences vidéos d'Ekiga, ma webcam est limitée à 704x576,
> or dans le logiciel "cheese" elle peut monter à 1920x1080 (et même
> plus, et effectivement la qualité est meilleure). Est-ce que je peux
> avoir une meilleure résolution avec Ekiga ? Je suis sous Debian 8,
> Ekiga 4.0.1, et webcam Logitech C930e. D'ailleurs, au passage, cette
> webcam serait moins bien que la C920e qui supportait le H264.
>
> Résultat avec la C930e (pas de H.264)
> # v4l2-ctl --list-formats
> ioctl: VIDIOC_ENUM_FMT
>     Index       : 0
>     Type        : Video Capture
>     Pixel Format: 'YUYV'
>     Name        : YUV 4:2:2 (YUYV)
>
>     Index       : 1
>     Type        : Video Capture
>     Pixel Format: 'MJPG' (compressed)
>     Name        : MJPEG
>
>
> Merci
> Bonne journée
>
> --
> JL
> _______________________________________________
> ekiga-list mailing list
> [hidden email]
> https://mail.gnome.org/mailman/listinfo/ekiga-list

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Re: résolution webcam

Bret Busby-2
On 23/02/2016, adhesionlistedediffusion
<[hidden email]> 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

....................................................
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Re: résolution webcam

Bret Busby-2
On 24/02/2016, Bret Busby <[hidden email]> wrote:

> On 23/02/2016, adhesionlistedediffusion
> <[hidden email]> 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.


--

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

....................................................
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Re: résolution webcam

Bret Busby-2
On 24/02/2016, Bret Busby <[hidden email]> wrote:

> On 24/02/2016, Bret Busby <[hidden email]> wrote:
>> On 23/02/2016, adhesionlistedediffusion
>> <[hidden email]> 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.

--

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

....................................................
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Re: résolution webcam

adhesionlistedediffusion
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 <[hidden email]> wrote:
>> On 24/02/2016, Bret Busby <[hidden email]> wrote:
>>> On 23/02/2016, adhesionlistedediffusion
>>> <[hidden email]> 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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Re: résolution webcam

adhesionlistedediffusion
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 <[hidden email]> wrote:
>>> On 24/02/2016, Bret Busby <[hidden email]> wrote:
>>>> On 23/02/2016, adhesionlistedediffusion
>>>> <[hidden email]> 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.
>>
>
> _______________________________________________
> ekiga-list mailing list
> [hidden email]
> https://mail.gnome.org/mailman/listinfo/ekiga-list
>

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Re: résolution webcam

Eugen Dedu-2
In reply to this post by adhesionlistedediffusion
Hi,

Currently Ekiga is limited to 704x576, cf.
http://wiki.ekiga.org/index.php/Manual#Introduction for example.  The
development code of Ekiga accepts higher resolution, but we have not yet
made any release of Ekiga with this code.

Best regards,
Eugen Dedu
http://eugen.dedu.free.fr

On 23/02/16 16:07, adhesionlistedediffusion 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
>
> Le 23/02/2016 15:57, adhesionlistedediffusion a écrit :
>> Bonjour,
>>
>> Dans les préférences vidéos d'Ekiga, ma webcam est limitée à 704x576,
>> or dans le logiciel "cheese" elle peut monter à 1920x1080 (et même
>> plus, et effectivement la qualité est meilleure). Est-ce que je peux
>> avoir une meilleure résolution avec Ekiga ? Je suis sous Debian 8,
>> Ekiga 4.0.1, et webcam Logitech C930e. D'ailleurs, au passage, cette
>> webcam serait moins bien que la C920e qui supportait le H264.
>>
>> Résultat avec la C930e (pas de H.264)
>> # v4l2-ctl --list-formats
>> ioctl: VIDIOC_ENUM_FMT
>>     Index       : 0
>>     Type        : Video Capture
>>     Pixel Format: 'YUYV'
>>     Name        : YUV 4:2:2 (YUYV)
>>
>>     Index       : 1
>>     Type        : Video Capture
>>     Pixel Format: 'MJPG' (compressed)
>>     Name        : MJPEG
>>
>>
>> Merci
>> Bonne journée
>>
>> --
>> JL
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Re: résolution webcam

Eugen Dedu-2
In reply to this post by Bret Busby-2
On 23/02/16 18:47, Bret Busby wrote:

> On 23/02/2016, adhesionlistedediffusion
> <[hidden email]> 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.

I would say that using a very high resolution is better, but you need
both a good camera (which is not your case it seems) and a relatively
fast network.  I made some tests with 640x480 video and H264 if I
remember correctly, and it tool around 50 kB/s, i.e. 400 kb/s.  If you
use a 4 times video resolution (h*2, v*2), this yields very
approximately 1.6 Mb/s in *upload*.

Best regards,
Eugen

>>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.
>

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Re: résolution webcam

Eugen Dedu-2
In reply to this post by adhesionlistedediffusion
On 25/02/16 09:38, adhesionlistedediffusion wrote:

> 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 ?

Well, the development is advancing, but slowly...  We are (almost) in
bug fixing mode, but we lack time to fully check Ekiga...  It could take
one or several months, in my opinion.

Eugen

> Le 23/02/2016 19:26, Bret Busby a écrit :
>> On 24/02/2016, Bret Busby <[hidden email]> wrote:
>>> On 24/02/2016, Bret Busby <[hidden email]> wrote:
>>>> On 23/02/2016, adhesionlistedediffusion
>>>> <[hidden email]> 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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