linux下安装mplayer

系统：Red Hat Enterprise Linux Server release 5 (Tikanga)

起初我通过源代码安装：

cd/usr/local/src
wgethttp://www1.mplayerhq.hu/MPlayer/releases/MPlayer-1.0rc2.tar.bz2
tar-xjvfMPlayer-1.0rc2.tar.bz2
cdMPlayer-1.0rc2
./configure
Make&&makeinstall

安装好了，

问题1）从wmv转flv

Optionlavfopts:Unknownsuboption
i_certify_that_my_video_stream_does_not_use_b_frames
Errorparsingoptiononthecommandline:-lavfopts

Exiting...(errorparsingcommandline)

参看此篇文档说这个选项去掉了

http://lists.mplayerhq.hu/pipermail/mplayer-users/2007-August/068530.html

于是去掉-lavfopts i_certify_that_my_video_stream_does_not_use_b_frames

Ok

问题2）从rmvb转flv

出现问题

openingwin32dll'drvc.so'
Win32LoadLibraryfailedtoload:drvc.so,/usr/local/lib/codecs/drvc.so,/usr/lib/win32/drvc.so,/usr/local/lib/win32/drvc.so

于是

cd/usr/local/src
wgethttp://www1.mplayerhq.hu/MPlayer/releases/codecs/essential-20071007.tar.bz2
Tar-xjvfessential-20071007.tar.bz2
mkdir-p/usr/local/lib/codesc
cp-ressential-20071007.tar.bz2/*/usr/local/lib/codesc

ok

问题3）从mp3或者wma到flv

出现问题：

Videostreamismandatory!

查了几篇有限的文档，偶尔有两篇提出了解决方法，但我试过无效，无奈之下放弃

于是采用rpm安装别的版本

最初的rpm是

lame-3.97-1.i386.rpm （必须，否者无法安装mplayer）

libungif-4.1.0-15.i386.rpm（必须，否者无法安装mplayer，会报错：安装时缺少libu ngif.so.4）

地址：ftp://rpmfind.net/linux/redhat/9/en/os/i386/RedHat/RPMS/libungif-4.1.0-15.i386.rpm

mplayer-1.0.9-1.i386.rpm

如果你要截图那么需要安装

SDL-1.2.9-5.2.1.i386.rpm必须，否者无法安装ffmpeg，否则又会报错，缺少某某文件）

地址：http://fedora.osmirror.nl/core/development/i386/Fedora/RPMS/SDL-1.2.9-5.2.1.i386.rpm

ffmpeg-0.5.0-1.i386.rpm

安装好了之后转mp3,wma这种音频没问题，

问题1）

但转换视频的是发现必须加上

-lavfopts i_certify_that_my_video_stream_does_not_use_b_frames这个选项

问题2）

转换rm

Tryingtoforcevideocodecdriverfamilyqtvideo...
Openingvideodecoder:[realvid]RealVideodecoder
Error:/usr/local/lib/codecs/drvc.so:cannotrestoresegmentprotafterreloc:Permissiondenied
Win32LoadLibraryfailedtoload:drvc.so,/usr/local/lib/codecs/drvc.so,/usr/lib/win32/drvc.so,/usr/local/lib/win32/drvc.so
Errorloadingdll
ERROR:CouldnotopenrequiredDirectShowcodecdrvc.so.
ReadtheRealVideosectionoftheDOCS!
VDecoderinitfailed:(
Openingvideodecoder:[realvid]RealVideodecoder
Error:/usr/local/lib/codecs/drv3.so.6.0:cannotopensharedobjectfile:Nosuchfileordirectory
Win32LoadLibraryfailedtoload:drv3.so.6.0,/usr/local/lib/codecs/drv3.so.6.0,/usr/lib/win32/drv3.so.6.0,/usr/local/lib/win32/drv3.so.6.0
Errorloadingdll
ERROR:CouldnotopenrequiredDirectShowcodecdrv3.so.6.0.
ReadtheRealVideosectionoftheDOCS!
VDecoderinitfailed:(
Openingvideodecoder:[realvid]RealVideodecoder
Win32LoadLibraryfailedtoload:drv33260.dll,/usr/local/lib/codecs/drv33260.dll,/usr/lib/win32/drv33260.dll,/usr/local/lib/win32/drv33260.dll
Errorloadingdll
ERROR:CouldnotopenrequiredDirectShowcodecdrv33260.dll.
ReadtheRealVideosectionoftheDOCS!
VDecoderinitfailed:(
Openingvideodecoder:[realvid]RealVideodecoder
Error:/usr/local/lib/codecs/drvc.bundle/Contents/MacOS/drvc:cannotopensharedobjectfile:Nosuchfileordirectory
Win32LoadLibraryfailedtoload:drvc.bundle/Contents/MacOS/drvc,/usr/local/lib/codecs/drvc.bundle/Contents/MacOS/drvc,/usr/lib/win32/drvc.bundle/Contents/MacOS/drvc,/usr/local/lib/win32/drvc.bundle/Contents/MacOS/drvc
Errorloadingdll
ERROR:CouldnotopenrequiredDirectShowcodecdrvc.bundle/Contents/MacOS/drvc.
ReadtheRealVideosectionoftheDOCS!
VDecoderinitfailed:(
Cannotfindcodecmatchingselected-voandvideoformat0x30335652.
ReadDOCS/HTML/en/codecs.html!
==========================================================================

Exiting...

修改/etc/sysconfig/selinux

让SELINUX=disabled

问题解决

3)在转换某个mp3的时候，发现获取转换的时长有问题，发现原来只有200多秒的mp3,会被认为是有

1000多秒

于是将rpm换成

mplayer-1.0.9-2.i386.rpm

安装时发现缺少libfribidi.so.0

于是又装上fribidi0-0.10.4-0.i586.rpm

地址: wget ftp://ftp.pbone.net/mirror/ftp.sourceforge.net/pub/sourceforge/f/fr/fribidi/fribidi0-0.10.4-0.i586.rpm

到目前为止，总算解决了以前存在的若干问题