[MPlayer-users] VO: Description: Null video output

[Craig Jameson]

I guess I should note that when we tried running mplayer with fb0
permissions set to allow all users to read fb0, at the time we tried
that, the user account had been added to the group "video".  We still
got the "Operation not permitted" error.

Craig.


On Thu, 2022-03-24 at 17:26 -0600, Craig Jameson wrote:
> I am attempting to install mplayer in a user account.  The audio
> works.
> But, no window opens to play video.  This is the same for mp4 files
> and
> webm files.
> 
> The system is running RHEL 8.5.
> 
> I believe the following is the salient part of the verbose output:
> 
> =====================================================================
> ==
> ===
> [lavf] stream 1: audio (aac), -aid 0, -alang und
> LAVF: 1 audio and 1 video streams found
> LAVF: build 3871078
> VIDEO:  [H264]  1920x1080  0bpp  23.976 fps  5162.2 kbps (630.2
> kbyte/s)
> [V]
> filefmt:44  fourcc:0x34363248  size:1920x1080  fps:23.976  ftime:=0.0
> 41
> 7
> using /dev/fb0
> Can't open /dev/fb0: Permission denied
> [fbdev2] Using device /dev/fb0
> [fbdev2] Can't open /dev/fb0: Permission denied
> VO: [v4l2] No such file or directory
> vo_cvidix: No vidix driver name provided, probing available ones (-v
> option for details)!
> [vidixlib] PROBING: cyberblade
> [cyberblade] Error occurred during pci scan: Operation not permitted
> [vidixlib] PROBING: mach64
> [mach64] Error occurred during pci scan: Operation not permitted
> [vidixlib] PROBING: mga
> [mga] probe
> [mga] Error occurred during pci scan: Operation not permitted
> [vidixlib] PROBING: mga_crtc2
> [mga] probe
> [mga] Error occurred during pci scan: Operation not permitted
> [vidixlib] PROBING: nvidia
> [nvidia_vid] Error occurred during pci scan: Operation not permitted
> [vidixlib] PROBING: pm3
> [pm3] Error occurred during pci scan: Operation not permitted
> [vidixlib] PROBING: radeon
> [radeon] Error occurred during pci scan: Operation not permitted
> [vidixlib] PROBING: rage128
> [rage128] Error occurred during pci scan: Operation not permitted
> [vidixlib] PROBING: s3
> [s3_vid] Error occurred during pci scan: Operation not permitted
> [vidixlib] PROBING: sis
> [SiS] Error occurred during pci scan: Operation not permitted
> [vidixlib] PROBING: unichrome
> [unichrome] Error occurred during pci scan: Operation not permitted
> [vidixlib] No suitable driver can be found.
> 
> [VO_SUB_VIDIX] Couldn't find working VIDIX driver.
> =====================================================================
> ==
> ===
> 
> Running lspci in a user's account returns, among many other lines,
> this
> one:
> 
> 
> 01:00.0 VGA compatible controller: NVIDIA Corporation GP107 [GeForce
> GTX 1050 Ti] (rev a1)
> 
> Setting permissions of fb0 to allow all users to read it has been
> tried.  It has no effect.
> 
> So, mplayer returns that pci scans are not permitted, when they are. 
> And, mplayer sets the video driver to null, when there is a driver
> for
> my video card.
> 
> This same machine was running RHEL 7.5.  mplayer ran just fine on it
> when installed in the same user account.  From apperances, this new
> install of mplayer is running just fine.  It is just that the video
> does not play.
> 
> I am stumped.  How do I figure out where the problem is?
> 
> Craig.
> 
> 
> 
> 
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