Video recording with 30 frame rate.

[Dušan Poizl]

I have same issue with my notebook webcam. When you run GST_DEBUG=4
gst-launch v4l2src ! xvimagesink it should print out

v4l2 gstv4l2object.c:2729:gst_v4l2_object_get_caps:<v4l2src0> probed
caps: video/x-raw, format=(string)YUY2, width=(int)1280,
height=(int)720, pixel-aspect-ratio=(fraction)1/1,
interlace-mode=(string)progressive, framerate=(fraction){ 10/1 };
video/x-raw, format=(string)YUY2, width=(int)960, height=(int)544,
pixel-aspect-ratio=(fraction)1/1, interlace-mode=(string)progressive,
framerate=(fraction){ 10/1 }; ... and much more

one of the caps is "video/x-raw, format=(string)I420, width=(int)1280,
height=(int)720, pixel-aspect-ratio=(fraction)1/1,
interlace-mode=(string)progressive, framerate=(fraction){ 30/1 }"

so first caps which is printed is YUV2 format but only 10fps. but there
is I420 which enable 30fps. So try run your piepline with GST_DEBUG=4 so
you find out all supported caps to find suitable format.

Dňa 18.08.2014 o 03:07 stmoon napísal(a):
> no...
>
>
> 1280x720 and 30 fps .. but webm file is generated...
>
>
>
>
>
> 2014-08-18 1:36 GMT+09:00 Dušan Poizl [via GStreamer-devel] <[hidden
> email] </user/SendEmail.jtp?type=node&node=4668325&i=0>>:
>
>     what resolution have that cheese? because you may limit your
>     resolution
>     to 640x480 to be able record 30fps.
>
>     Dňa 17.08.2014 o 16:20 stmoon napísal(a):
>
>     > Hi. I'm newbie of GStreamer.
>     >
>     >
>     > I want to record video from camera  (
>     >
>     http://www.hardkernel.com/main/products/prdt_info.php?g_code=G137517754892 )
>
>     >
>     > so I use gst-launch like below
>     >
>     > gst-launch-0.10 v4l2src device=/dev/video1 ! ffmpegcolorspace !
>     avimux !
>     > filesink location=test.avi
>     >
>     > however the problem is the frame rate is 10 !!!
>     >
>     > in this website
>     >
>     (http://www.hardkernel.com/main/products/prdt_info.php?g_code=G137517754892)
>
>     > , it can record 30 frame
>     > however it can reocrd just 10 frame.
>     >
>     > Can you advice me how to control the frame rate?
>     >
>     > I tried something like below.. but all fails...
>     >
>     >  1. gst-launch-0.10 v4l2src device=/dev/video1 !
>     video/x-raw-yuv,width=1280,
>     > height=720, framerate=30/1 !  ffmpegcolorspace ! avimux ! filesink
>     > location=test.avi
>     >   ==> in this case, just record 1 sec or 3 sec and.. too fast..
>     >
>     > However, I can record it with 30 frame rate by using cheese program
>     > (https://help.ubuntu.com/community/Webcam)
>     >
>     > Thank you in advances
>     >
>     >
>     >
>     >
>     >
>     >
>     > --
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