Hello again.

The issue maybe it's not slackware related.

I wish to capture my screen. ffmpeg is istanlled and working (I
convert video files).

From his man-page I execute:
ffmpeg -f x11grab -vd x11:0.0 /tmp/out.mpg

but it says: "Unknown input or output format: x11grab"

Mind you the program is compiled by me (2007_FEB_9) including the
option --enable-x11grab

locate x11grab returns null (maybe unrelated).

Also I replaced x11:0.0 with $DISPLAY like that:
ffmpeg -f x11grab -vd $DISPLAY /tmp/out.mpg

Any ideas? Anyone with success of capture screen and ffmpeg on
Slackware?
--
Please excuse my english writing!
Slackware 11
Knowledge report: One year, still plenty to learn

On Thu, 10 May 2007 18:23:53 +0000, korgman wrote:

> Hello again.
>
> The issue maybe it's not slackware related.
>
> I wish to capture my screen. ffmpeg is istanlled and working (I convert
> video files).
>
> From his man-page I execute:
> ffmpeg -f x11grab -vd x11:0.0 /tmp/out.mpg
>
> but it says: "Unknown input or output format: x11grab"
>
> Mind you the program is compiled by me (2007_FEB_9) including the option
> --enable-x11grab
>
> locate x11grab returns null (maybe unrelated).


Maybe not, please check with:

$ ffmpeg -formats | grep -i x

if you have something about your wanted x11grab ?

I'll try tomorrow to build a fresh ffmpeg with this option just
to cross-check a possible ffmpeg compilation failure but it'll
really have to be tomorrow and, besides my tests on 2.6.21.1
and different "new trend" modules can probably spoil the game ;-)

On Thu, 10 May 2007 18:23:53 +0000 (UTC), korgman
<korgie@gmail.com> appears to have said:

> From his man-page I execute:
> ffmpeg -f x11grab -vd x11:0.0 /tmp/out.mpg

My man page is different, but then ffmpeg is a bit of a moving target.
I'm using svn 8861, which was current as of May 1, and I'm sure it's
obsolete already. The example given in my copy of the man page is:

ffmpeg -f x11grab -s cif -i :0.0 /tmp/out.mpg

> but it says: "Unknown input or output format: x11grab"
>
> Mind you the program is compiled by me (2007_FEB_9) including the
> option --enable-x11grab

Turns out that "--enable-x11grab" will fail silently, unless you
explicitly specify X11 includes and libs to the configure script.
Works for me with:

../configure \
--enable-x11grab \
--extra-cflags=-I/usr/X11R6/include \
--extra-ldflags=-L/usr/X11R6/lib

http://lists.mplayerhq.hu/pipermail/...ch/007267.html

HTH,
Jonathan

--
Don't just hit reply. Email address is broken. Thank
your friendly neighborhood spammer. Email replies to:
user: daboid domain: suddenlink<dot>net

On 2007-05-11, Jonathan A. <invalid@example.net> wrote:
> Turns out that "--enable-x11grab" will fail silently, unless you
> explicitly specify X11 includes and libs to the configure script.
> Works for me with:
>
> ./configure \
> --enable-x11grab \
> --extra-cflags=-I/usr/X11R6/include \
> --extra-ldflags=-L/usr/X11R6/lib
>
> http://lists.mplayerhq.hu/pipermail/...ch/007267.html

Spot-on, both of you. x11grab was absent.

Re-compiled and working. Now I test which is better:
recordmydesktop or ffmpeg

Thanks!

>
> HTH,
> Jonathan
>


--
Please excuse my english writing!
Slackware 11
Knowledge report: One year, still plenty to learn

On Fri, 11 May 2007 01:31:45 +0000, Jonathan A. wrote:

> On Thu, 10 May 2007 18:23:53 +0000 (UTC), korgman <korgie@gmail.com>
> appears to have said:
>
>> From his man-page I execute:
>> ffmpeg -f x11grab -vd x11:0.0 /tmp/out.mpg
>
> My man page is different, but then ffmpeg is a bit of a moving target.
> I'm using svn 8861, which was current as of May 1, and I'm sure it's
> obsolete already. The example given in my copy of the man page is:
>
> ffmpeg -f x11grab -s cif -i :0.0 /tmp/out.mpg
>
>> but it says: "Unknown input or output format: x11grab"
>>
>> Mind you the program is compiled by me (2007_FEB_9) including the
>> option --enable-x11grab
>
> Turns out that "--enable-x11grab" will fail silently, unless you
> explicitly specify X11 includes and libs to the configure script. Works
> for me with:
>
> ./configure \
> --enable-x11grab \
> --extra-cflags=-I/usr/X11R6/include \ --extra-ldflags=-L/usr/X11R6/lib


Confirmed here, slightly more up2date version gives the same results
and has the same solution by adding the extra flags :-)

$ ./ffmpeg -formats | grep -i grab
FFmpeg version SVN-r8996, Copyright (c) 2000-2007 Fabrice Bellard, et al.
configuration: --enable-gpl --enable-x11grab --extra-cflags=-I/usr/X11R6/
include --extra-ldflags=-L/usr/X11R6/lib
libavutil version: 49.4.0
libavcodec version: 51.40.4
libavformat version: 51.12.1
built on May 11 2007 11:43:56, gcc: 4.1.2
DE audio_device audio grab and output
D dv1394 dv1394 A/V grab
D video4linux video grab
D video4linux2 video grab
D x11grab X11grab