I can confirm that this bug is still present in the latest release of Lucid ( Linux aleph1 2.6.38-8-generic #42~lucid1-Ubuntu SMP Mon Apr 11 13:45:06 UTC 2011 x86_64 GNU/Linux ).
Trying to capture video from a Firefox 4.0.1 window -- just a Gmail session in this case -- results in an error similar to the above after pressing the "record" button :
jdb2@aleph1 ~/screencap $ xvidcap --fps 30000/1001 --sf --auto --file cap%0.9.ppm --gui yes --window 0x580006c
The program 'xvidcap' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter attributes)'.
(Details: serial 2054 error_code 8 request_code 139 minor_code 4)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the --sync command line
option to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)
I can confirm that this bug is still present in the latest release of Lucid ( Linux aleph1 2.6.38-8-generic #42~lucid1-Ubuntu SMP Mon Apr 11 13:45:06 UTC 2011 x86_64 GNU/Linux ).
Trying to capture video from a Firefox 4.0.1 window -- just a Gmail session in this case -- results in an error similar to the above after pressing the "record" button :
jdb2@aleph1 ~/screencap $ xvidcap --fps 30000/1001 --sf --auto --file cap%0.9.ppm --gui yes --window 0x580006c
The program 'xvidcap' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter attributes)'.
(Details: serial 2054 error_code 8 request_code 139 minor_code 4)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the --sync command line
option to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)
Debugging output is attached.