系统:Red Hat Enterprise Linux Server release 5 (Tikanga)
起初我通过源代码安装:
安装好了,
问题1)从wmv转flv
Optionlavfopts:Unknownsuboption
i_certify_that_my_video_stream_does_not_use_b_frames
Errorparsingoption
on
the
command
line:-lavfopts

Exiting
...
(
errorparsing
command
line
)
参看此篇文档说这个选项去掉了
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
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)
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)
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:cannot
restore
segmentprotafterreloc:Permissiondenied
Win32LoadLibraryfailedtoload:drvc
.
so
,
/
usr
/
local
/
lib
/
codecs
/
drvc
.
so
,
/
usr
/
lib
/
win32
/
drvc
.
so
,
/
usr
/
local
/
lib
/
win32
/
drvc
.
so
Errorloadingdll
ERROR:Could
not
openrequiredDirectShowcodecdrvc
.
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:Could
not
openrequiredDirectShowcodecdrv3
.
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:Could
not
openrequiredDirectShowcodecdrv33260
.
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:Could
not
openrequiredDirectShowcodecdrvc
.
bundle
/
Contents
/
MacOS
/
drvc
.
ReadtheRealVideosectionoftheDOCS!
VDecoderinitfailed:
(
Cannot
find
codecmatchingselected-voandvideo
format
0x30335652
.
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
于是又装上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