用 mplayer 播放 RMVB ，root能放但普通用户不能放

icatman

装了ATI的驱动以后，用gl2方式放视频效果好多了，刚装完时普通用户还是可以放的，重启后就不行了，提示"ADecoder preinit failed"，只有声音，没有图像，放AVI的可以。在终端下先用root测试，显示如下：

1. cqj:/home/catman#  mplayer -vo gl2 test.rmvb
   
2. MPlayer 1.0rc2-4.2.1-DFSG-free (C) 2000-2007 MPlayer Team
   
3. CPU: AMD Sempron(tm)   2500+ (Family: 6, Model: 8, Stepping: 1)
   
4. CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
   
5. Compiled with runtime CPU detection.
   
6. mplayer: could not connect to socket
   
7. mplayer: No such file or directory
   
8. Failed to open LIRC support. You will not be able to use your remote control.
   
9. 
   
10. Playing test.rmvb.
    
11. REAL file format detected.
    
12. Stream description: Video Stream
    
13. Stream mimetype: video/x-pn-realvideo
    
14. [real] Video stream found, -vid 0
    
15. Stream description: Audio Stream
    
16. Stream mimetype: audio/x-pn-realaudio
    
17. [real] Audio stream found, -aid 1
    
18. Stream mimetype: logical-fileinfo
    
19. VIDEO:  [RV40]  384x288  24bpp  25.000 fps    0.0 kbps ( 0.0 kbyte/s)
    
20. Clip info:
    
21. name: test
    
22. author: PoonTszTao
    
23. copyright: (C) 2005 TVB
    
24. ==========================================================================
    
25. Opening video decoder: [realvid] RealVideo decoder
    
26. Selected video codec: [rv3040] vfm: realvid (Linux RealPlayer 10 RV30/40 decoder)
    
27. ==========================================================================
    
28. ==========================================================================
    
29. Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
    
30. FAAD: compressed input bitrate missing, assuming 128kbit/s!
    
31. AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 16000->176400)
    
32. Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio) decoder)
    
33. ==========================================================================
    
34. AO: [oss] 44100Hz 2ch s16le (2 bytes per sample)
    
35. Starting playback...
    
36. VDec: vo config request - 384 x 288 (preferred colorspace: Planar I420)
    
37. Could not find matching colorspace - retrying with -vf scale...
    
38. Opening video filter: [scale]
    
39. VDec: using Planar I420 as output csp (no 0)
    
40. Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
    
41. [swscaler @ 0x88d54b0]SwScaler: using unscaled yuv420p -> bgr24 special converter
    
42. VO: [gl2] 384x288 => 384x288 BGR 24-bit
    
43. [gl2] You have OpenGL >= 1.2 capable drivers, GOOD (16bpp and BGR is ok!)
    
44. [gl2] antialiasing off
    
45. [gl2] bilinear linear
    
46. A:   1.4 V:   3.0 A-V: -1.630 ct: -0.132  34/ 34 33% 42%  1.2% 9 0
    
47. Exiting... (Quit)

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可以正常播放，换了普通用户就不行了，结果是这样的：

1. catman@cqj:~$ mplayer -vo gl2 test.rmvb
   
2. MPlayer 1.0rc2-4.2.1-DFSG-free (C) 2000-2007 MPlayer Team
   
3. CPU: AMD Sempron(tm)   2500+ (Family: 6, Model: 8, Stepping: 1)
   
4. CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
   
5. Compiled with runtime CPU detection.
   
6. mplayer: could not connect to socket
   
7. mplayer: No such file or directory
   
8. Failed to open LIRC support. You will not be able to use your remote control.
   
9. 
   
10. Playing test.rmvb.
    
11. REAL file format detected.
    
12. Stream description: Video Stream
    
13. Stream mimetype: video/x-pn-realvideo
    
14. [real] Video stream found, -vid 0
    
15. Stream description: Audio Stream
    
16. Stream mimetype: audio/x-pn-realaudio
    
17. [real] Audio stream found, -aid 1
    
18. Stream mimetype: logical-fileinfo
    
19. VIDEO:  [RV40]  384x288  24bpp  25.000 fps    0.0 kbps ( 0.0 kbyte/s)
    
20. Clip info:
    
21. name: test
    
22. author: PoonTszTao
    
23. copyright: (C) 2005 TVB
    
24. ==========================================================================
    
25. Opening video decoder: [realvid] RealVideo decoder
    
26. Error: /usr/lib/codecs/drvc.so: cannot open shared object file: Permission denied
    
27. Win32 LoadLibrary failed to load: drvc.so, /usr/lib/codecs/drvc.so, /usr/lib/win32/drvc.so, /usr/local/lib/win32/drvc.so
    
28. Error loading dll
    
29. ERROR: Could not open required DirectShow codec drvc.so.
    
30. Read the RealVideo section of the DOCS!
    
31. VDecoder init failed :(
    
32. Opening video decoder: [realvid] RealVideo decoder
    
33. Win32 LoadLibrary failed to load: drvc.dll, /usr/lib/codecs/drvc.dll, /usr/lib/win32/drvc.dll, /usr/local/lib/win32/drvc.dll
    
34. Error loading dll
    
35. ERROR: Could not open required DirectShow codec drvc.dll.
    
36. Read the RealVideo section of the DOCS!
    
37. VDecoder init failed :(
    
38. Opening video decoder: [realvid] RealVideo decoder
    
39. Error: /usr/lib/codecs/drv4.so.6.0: cannot open shared object file: Permission denied
    
40. Win32 LoadLibrary failed to load: drv4.so.6.0, /usr/lib/codecs/drv4.so.6.0, /usr/lib/win32/drv4.so.6.0, /usr/local/lib/win32/drv4.so.6.0
    
41. Error loading dll
    
42. ERROR: Could not open required DirectShow codec drv4.so.6.0.
    
43. Read the RealVideo section of the DOCS!
    
44. VDecoder init failed :(
    
45. Opening video decoder: [realvid] RealVideo decoder
    
46. Win32 LoadLibrary failed to load: drv43260.dll, /usr/lib/codecs/drv43260.dll, /usr/lib/win32/drv43260.dll, /usr/local/lib/win32/drv43260.dll
    
47. Error loading dll
    
48. ERROR: Could not open required DirectShow codec drv43260.dll.
    
49. Read the RealVideo section of the DOCS!
    
50. VDecoder init failed :(
    
51. Opening video decoder: [realvid] RealVideo decoder
    
52. Error: /usr/lib/codecs/drvc.bundle/Contents/MacOS/drvc: cannot open shared object file: No such file or directory
    
53. Win32 LoadLibrary failed to load: drvc.bundle/Contents/MacOS/drvc, /usr/lib/codecs/drvc.bundle/Contents/MacOS/drvc, /usr/lib/win32/drvc.bundle/Contents/MacOS/drvc, /usr/local/lib/win32/drvc.bundle/Contents/MacOS/drvc
    
54. Error loading dll
    
55. ERROR: Could not open required DirectShow codec drvc.bundle/Contents/MacOS/drvc.
    
56. Read the RealVideo section of the DOCS!
    
57. VDecoder init failed :(
    
58. Cannot find codec matching selected -vo and video format 0x30345652.
    
59. Read DOCS/HTML/en/codecs.html!
    
60. ==========================================================================
    
61. ==========================================================================
    
62. Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
    
63. FAAD: compressed input bitrate missing, assuming 128kbit/s!
    
64. AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 16000->176400)
    
65. Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio) decoder)
    
66. ==========================================================================
    
67. AO: [oss] 44100Hz 2ch s16le (2 bytes per sample)
    
68. Video: no video
    
69. Starting playback...
    
70. A:   1.5 (01.4) of 458.0 (07:38.0)  1.1%
    
71. Exiting... (Quit)

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在网上找了一下，没搜索到有用的信息。是不是和我将codecs目录下所有的文件加上 x 权限有关呀？因为我用“/usr/share/mplayer/scripts/binary_codecs.sh”这个脚本重新安装解码器后又可以放了。

whitelilis

和 x 权限的关系应该不大，我的很多 dll, so 都有 x 权限，没有问题

我觉得应该是 codecs 的可读权限和 x 权限问题， 注意，是 codecs 目录本身，不仅是它的内部目录


另，lfs/blfs 中推荐的方法是把用户加入 audio 和 video 组来解决这种问题的
祝楼上兄弟好运