查看视频文件的信息

 1.查看视频文件的信息
 mplayer -identify -nosound -vc dummy -vo null xxx.flv
 xxx.flv是视频文件名，可以是wmv ,avi等
 2.查看dvd的信息
mplayer dvd:// -dvd-device /root/dvd/dvd203 -vo null -ao null -frames 0 -identify
其中/root/dvd/dvd203为dvd的目录
目录下应该有如下文件 VIDEO_TS.BUP  VIDEO_TS.IFO  VTS_01_0.BUP  VTS_01_0.IFO  VTS_01_1.VOB  VTS_01_2.VOB  VTS_01_3.VOB

将显示形式如下的信息
#############################################################
[root@localhost failed]#  mplayer -identify -nosound -vc dummy -vo null 24718675_100_1000_20090924120420921-707468929.avi
MPlayer SVN-r29390-snapshot-4.1.2 (C) 2000-2009 MPlayer Team
 
Playing 24718675_100_1000_20090924120420921-707468929.avi.
AVI file format detected.
ID_VIDEO_ID=0
[aviheader] Video stream found, -vid 0
VIDEO:  [dv25]  720x576  24bpp  25.000 fps  28800.0 kbps (3515.6 kbyte/s)
Clip info:
 Software: Matrox MQSink Filter . Format: 6. Build: 3.1.1.423
ID_CLIP_INFO_NAME0=Software
ID_CLIP_INFO_VALUE0=Matrox MQSink Filter . Format: 6. Build: 3.1.1.423
ID_CLIP_INFO_N=1
ID_FILENAME=24718675_100_1000_20090924120420921-707468929.avi
ID_DEMUXER=avi
ID_VIDEO_FORMAT=dv25
ID_VIDEO_BITRATE=28800000
ID_VIDEO_WIDTH=720
ID_VIDEO_HEIGHT=576
ID_VIDEO_FPS=25.000
ID_VIDEO_ASPECT=1.3333
ID_LENGTH=72.40
ID_SEEKABLE=1
ID_CHAPTERS=0
==========================================================================
Forced video codec: dummy
Cannot find codec matching selected -vo and video format 0x35327664.
==========================================================================
 
 
Exiting... (End of file)
ID_EXIT=EOF
#####################################################################

[root@localhost failed]#mplayer dvd:// -dvd-device /root/dvd/dvd203 -vo null -ao null -frames 0 -identify

MPlayer SVN-r29390-snapshot-4.1.2 (C) 2000-2009 MPlayer Team
 
Playing dvd://.
libdvdread: Using libdvdcss version 1.2.10 for DVD access
libdvdread: Couldn't find device name.
ID_DVD_TITLES=1
ID_DVD_TITLE_1_CHAPTERS=7
ID_DVD_TITLE_1_ANGLES=1
ID_DVD_TITLE_1_LENGTH=2917.200
libdvdnav:DVDOpenFilePath:findDVDFile /VIDEO_TS/VTS_02_0.IFO failed
libdvdnav:DVDOpenFilePath:findDVDFile /VIDEO_TS/VTS_03_0.IFO failed
libdvdnav:DVDOpenFilePath:findDVDFile /VIDEO_TS/VTS_04_0.IFO failed
libdvdnav:DVDOpenFilePath:findDVDFile /VIDEO_TS/VTS_05_0.IFO failed
libdvdnav:DVDOpenFilePath:findDVDFile /VIDEO_TS/VTS_06_0.IFO failed
libdvdnav:DVDOpenFilePath:findDVDFile /VIDEO_TS/VTS_07_0.IFO failed
libdvdnav:DVDOpenFilePath:findDVDFile /VIDEO_TS/VTS_08_0.IFO failed
libdvdnav:DVDOpenFilePath:findDVDFile /VIDEO_TS/VTS_09_0.IFO failed
ID_DVD_DISC_ID=FFBF6F54A8F97D702B6A3664A44FE3B1
There are 1 titles on this DVD.
ID_DVD_CURRENT_TITLE=1
There are 1 angles in this DVD title.
audio stream: 0 format: ac3 (stereo) language: en aid: 128.
ID_AUDIO_ID=128
ID_AID_128_LANG=en
number of audio channels on disk: 1.
subtitle ( sid ): 2 language: zh
ID_SUBTITLE_ID=2
ID_SID_2_LANG=zh
number of subtitles on disk: 1
CHAPTERS: 00:00:00,00:07:48,00:16:04,00:24:27,00:31:55,00:39:05,00:48:36,
ID_VIDEO_ID=0
MPEG-PS file format detected.
ID_AUDIO_ID=128
VIDEO:  MPEG2  720x480  (aspect 3)  29.970 fps  8800.0 kbps (1100.0 kbyte/s)
ID_FILENAME=dvd://
ID_DEMUXER=mpegps
ID_VIDEO_FORMAT=0x10000002
ID_VIDEO_BITRATE=8800000
ID_VIDEO_WIDTH=720
ID_VIDEO_HEIGHT=480
ID_VIDEO_FPS=29.970
ID_VIDEO_ASPECT=0.0000
ID_AUDIO_FORMAT=8192
ID_AUDIO_BITRATE=0
ID_AUDIO_RATE=0
ID_AUDIO_NCH=0
ID_LENGTH=2917.20
ID_SEEKABLE=1
ID_CHAPTERS=7
==========================================================================
Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
VDec: vo config request - 720 x 480 (preferred colorspace: Mpeg PES)
VDec: using Mpeg PES as output csp (no 0)
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
ID_VIDEO_ASPECT=1.7778
VO: [null] 720x480 => 854x480 Mpeg PES
Selected video codec: [mpegpes] vfm: mpegpes (MPEG-PES output (.mpg or DXR3/IVTV/DVB/V4L2 card))
==========================================================================
ID_VIDEO_CODEC=mpegpes
==========================================================================
Opening audio decoder: [liba52] AC3 decoding with liba52
Using SSE optimized IMDCT transform
Using MMX optimized resampler
AUDIO: 48000 Hz, 2 ch, s16le, 192.0 kbit/12.50% (ratio: 24000->192000)
ID_AUDIO_BITRATE=192000
ID_AUDIO_RATE=48000
ID_AUDIO_NCH=2
Selected audio codec: [a52] afm: liba52 (AC3-liba52)
==========================================================================
AO: [null] 48000Hz 2ch s16le (2 bytes per sample)
ID_AUDIO_CODEC=a52
Starting playback...
 
 
Exiting... (End of file)
ID_EXIT=EOF