[ELDK] FFMPEG on powerpc eldk-5.3 xorg

[Stefano Babic]

Hi Naishab,

On 02/06/2014 11:19, naishab kp wrote:
> Hi all,
> I am having a custom PowerPC board running eldk-5.3 with xorg.
> When i try to grab video using the following command i get the following
> error.
> However i was able to grab video with Xvfb and x11vnc on the same board and
> same ffmpeg library.
> What parameter i  messed up with?
> Anyone has a clue?
> 
> root at ppc:/ffmpeg-0.11.1-ppc-altivec/bin#  ./ffmpeg -f x11grab -s 1280x1024
> -r 30 -i :0.0 -qscale 0.1 -t 3 grab.avi
> 
> ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
>   built on May 29 2014 10:56:22 with gcc 4.7.2
>   configuration: --arch=powerpc --enable-cross-compile
> --cross-prefix=powerpc-linux- --target-os=linux --enable-altivec
> --enable-shared --enable-gpl --enable-x11grab --enable-avresample
> --prefix=/opt/ffmpeg-0.11.1/ffmpeg-ppc
> --sysroot=/opt/eldk-5.3/powerpc/sysroots/powerpc-linux
> --sysinclude=/opt/eldk-5.3/powerpc/sysroots/powerpc-linux/usr/include
> --extra-cflags=-fPIC --disable-static
>   libavutil      51. 54.100 / 51. 54.100
>   libavcodec     54. 23.100 / 54. 23.100
>   libavformat    54.  6.100 / 54.  6.100
>   libavdevice    54.  0.100 / 54.  0.100
>   libavfilter     2. 77.100 /  2. 77.100
>   libswscale      2.  1.100 /  2.  1.100
>   libswresample   0. 15.100 /  0. 15.100
>   libpostproc    52.  0.100 / 52.  0.100
> [x11grab @ 0x10805560] device: :0.0 -> display: :0.0 x: 0 y: 0 width: 1280
> height: 1024
> [x11grab @ 0x10805560] shared memory extension found
> X Error of failed request:  BadMatch (invalid parameter attributes)
>   Major opcode of failed request:  141 (MIT-SHM)
>   Minor opcode of failed request:  4 (X_ShmGetImage)
>   Serial number of failed request:  11
>   Current serial number in output stream:  11
> root at ppc:/ffmpeg-0.11.1-ppc-altivec/bin#
> 

This does not seem an issue strictly related to ELDK - you will get more
help on a ffmgeg realted list. By the way, the Bad Match looks connected
to the geometry you are forcing. What about of you drop "-f x11grab -s
1280x1024" ?

Best regards,
Stefano Babic



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