gsreeamer\v4l2sink - frame rate\size limitations

[Regine Issan]

Thank you , Nicolas for your kind answer.

Does v4l2 limit frame size /rate
Or is the limitation only set by driver ,
According to the hardware ?
Is there any v4l2 documentation about it ?



On Wed, Aug 30, 2023 at 13:37 Nicolas Dufresne <nicolas at ndufresne.ca> wrote:

> Hi,
>
> Le mar. 29 août 2023, 06 h 45, Regine Issan via gstreamer-devel <
> gstreamer-devel at lists.freedesktop.org> a écrit :
>
>> Hello,
>> I am new to video world.
>> Trying to figure out the frame size limitations of v4l2sink.
>> running gst-launch-1.0 v4l2sink i get the result below.
>> Does that mean that v4l2 supports
>> video\ebayer  and video\x-bayer  frames
>> up to 32768*32768 pixels
>> with frame rate between 1 to 2147483647 frames per second ?
>>
>
> These are just template, what the HW support is obtained at runtime. While
> its possible to write an GST app to retrieve this information, it's easier
> to introspect your v4l2 driver using v4l2-ctl utility.
>
>
>
>> Thanks !
>>
>>
>> Pad Templates:
>>   SINK template: 'sink'
>>     Availability: Always
>>     Capabilities:
>>       image/jpeg
>>       video/mpeg
>>             mpegversion: 4
>>            systemstream: false
>>       video/mpeg
>>             mpegversion: { (int)1, (int)2 }
>>       video/mpegts
>>            systemstream: true
>>       *video/x-bayer*
>>                  format: { (string)bggr, (string)gbrg, (string)grbg,
>> (string)rggb }
>>
>> *   width: [ 1, 32768 ]                 height: [ 1, 32768 ]*
>>          *     framerate: [ 0/1, 2147483647/1 ]*
>>
>> *video/x-raw*
>>                  format: { (string)RGB16, (string)BGR, (string)RGB,
>> (string)ABGR, (string)xBGR, (string)RGBA, (string)RGBx, (string)GRAY8,
>> (string)GRAY16_LE, (string)GRAY16_BE, (string)YVU9, (string)YV12,
>> (string)YUY2, (string)YVYU, (string)UYVY, (string)Y42B, (string)Y41B,
>> (string)YUV9, (string)NV12_64Z32, (string)NV24, (string)NV61, (string)NV16,
>> (string)NV21, (string)NV12, (string)I420, (string)ARGB, (string)xRGB,
>> (string)BGRA, (string)BGRx, (string)BGR15, (string)RGB15 }
>>
>>
>> * width: [ 1, 32768 ]                 height: [ 1, 32768 ]
>> framerate: [ 0/1, 2147483647/1 ]*
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/gstreamer-devel/attachments/20230830/562bdc6b/attachment.htm>