[MPlayer-users] open: Permission denied Couldn't open: /dev/mga_vid

[aaron brick]

hello,
i briefly had this working when i was using a matrox card. the video output
should be totally independent of what kind of file you are playing. in order
for it to work, /dev/mga_vid (and possibly /dev/fb0 too) need to be
accessible. you can use strace to see exactly what error the open() may have
failed with, but permissions are most likely. in addition, i had to set the
major/minor numbers of the mga_vid device to something other than the
default. hope these hints help,
aaron.



so said info at mowiepopolsku.com in 2.1K on Tue, Jan 16, 2007:

> Hi all,
> 
>  
> 
> I've read every single thread on this topic I can't get this to work with
> mp4 files.  Here is what I get. I tried changing permissions logging in a
> root and user etc.
> 
>  
> 
> ISO: File Type Major Brand: ISO/IEC 14496-1 (MPEG-4 system) v2
> 
> Quicktime/MOV file format detected.
> 
> VIDEO:  [avc1]  320x180  24bpp  29.970 fps    0.0 kbps ( 0.0 kbyte/s)
> 
> ==========================================================================
> 
> Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
> 
> FAAD: compressed input bitrate missing, assuming 128kbit/s!
> 
> AUDIO: 32000 Hz, 2 ch, s16le, 128.0 kbit/12.50% (ratio: 16000->128000)
> 
> Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio)
> decoder)
> 
> ==========================================================================
> 
> open: Permission denied
> 
> Couldn't open: /dev/mga_vid
> 
> open: Permission denied
> 
> Couldn't open: /dev/mga_vid
> 
> [VO_TDFXFB] Can't open /dev/fb0: No such file or directory.
> 
> vo: couldn't open the X11 display ()!
> 
> vo: couldn't open the X11 display ()!
> 
> VO XOverlay need a subdriver
> 
> [gl] using extended formats. Use -vo gl:nomanyfmts if playback fails.
> 
> vo: couldn't open the X11 display ()!
> 
> vo: couldn't open the X11 display ()!
> 
> vo: couldn't open the X11 display ()!
> 
> [VO_SDL] SDL initialization failed: No available video device.
> 
> LibGGI: No explicit target specified.
> 
> LibGGI: Try to use fbdev target (framebuffer console)...
> 
> LibGG: unable to open lib: /usr/lib/ggi/display/fbdev.so: cannot open shared
> object file: No such file or directory
> 
> LibGGI: Try to use svgalib target...
> 
> LibGG: unable to open lib: /usr/lib/ggi/display/svgalib.so: cannot open
> shared object file: No such file or directory
> 
> LibGGI: Try to use AAlib target...
> 
> LibGG: unable to open lib: /usr/lib/ggi/display/aa.so: cannot open shared
> object file: No such file or directory
> 
> [ggi] unable to open 'default' output
> 
> Can't open /dev/fb0: No such file or directory
> 
> [fbdev2] Can't open /dev/fb0: No such file or directory
> 
> svgalib: Cannot get I/O permissions.
> 
> _______________________________________________
> MPlayer-users mailing list
> MPlayer-users at mplayerhq.hu
> http://lists.mplayerhq.hu/mailman/listinfo/mplayer-users
> 


 \\   aaron brick
 \\   aaron at lithic.org
 \\   http://www.lithic.org