ffmpeg遇见Unknown encoder 'libvorb

今天,刚安装成的ffpeg测试了一下,将MP4文件转化为ogg格式遇到了错误,求指教!!

问题: Unknown encoder 'libvorbis'

关键是 libvorbis 我已经安装过了libvorbis-1.3.5

紧急求教!!!!

以下是问题日志

[root@iZwz92ds2bbsfbzswgz0ykZ lib]# ffmpeg -i /var/www/video/PPTspeech/jjb.mp4 -acodec libvorbis /var/www/video/PPTspeech/jjb.ogg

FFmpeg version SVN-r26402, Copyright (c) 2000-2011 the FFmpeg developers

built on Dec 20 2017 15:21:22 with gcc 4.4.7 20120313 (Red Hat 4.4.7-18)

configuration: --prefix=/usr

libavutil50.36. 0 / 50.36. 0

libavcore0.16. 1 /0.16. 1

libavcodec52.108. 0 / 52.108. 0

libavformat52.93. 0 / 52.93. 0

libavdevice52. 2. 3 / 52. 2. 3

libavfilter1.74. 0 /1.74. 0

libswscale0.12. 0 /0.12. 0

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/video/PPTspeech/jjb.mp4':

Metadata:

major_brand: isom

minor_version: 512

compatible_brands: isomiso2avc1mp41

creation_time: 1970-01-01 00:00:00

encoder: Lavf52.84.0

Duration: 00:03:14.19, start: 0.000000, bitrate: 3698 kb/s

Stream #0.0(und): Video: h264, yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 3520 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc

Metadata:

creation_time: 1970-01-01 00:00:00

Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 189 kb/s

Metadata:

creation_time: 1970-01-01 00:00:00

Unknown encoder 'libvorbis'

[root@iZwz92ds2bbsfbzswgz0ykZ lib]#