FFmpeg转换.ogv

Question

我有一些麻烦转换我的.mov使用FFmpeg .ogg文件。

该命令应该工作，对吧？

ffmpeg -i test.mov -s 640x320 -vcodec libtheora -acodec libvorbis out.ogv 

它给了我这个输出

[0] => FFmpeg version SVN-r0.5.9-4:0.5.9-1, Copyright (c) 2000-2009 Fabrice Bellard, et al. 
[1] => configuration: --extra-version=4:0.5.9-1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libdirac --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libfaad --enable-libdc1394 --enable-shared --disable-static 
[2] => libavutil  49.15. 0/49.15. 0 
[3] => libavcodec 52.20. 1/52.20. 1 
[4] => libavformat 52.31. 0/52.31. 0 
[5] => libavdevice 52. 1. 0/52. 1. 0 
[6] => libavfilter 0. 4. 0/0. 4. 0 
[7] => libswscale  0. 7. 1/0. 7. 1 
[8] => libpostproc 51. 2. 0/51. 2. 0 
[9] => built on Jun 10 2012 08:33:06, gcc: 4.4.5 
[10] => 
[11] => Seems stream 0 codec frame rate differs from container frame rate: 1200.00 (1200/1) -> 30.00 (30/1) 
[12] => Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mov': 
[13] => Duration: 00:00:06.26, start: 0.000000, bitrate: 809 kb/s 
[14] =>  Stream #0.0(und): Video: h264, yuv420p, 480x360, 30 tbr, 600 tbn, 1200 tbc 
[15] =>  Stream #0.1(und): Audio: aac, 44100 Hz, mono, s16 
[16] => Output #0, ogg, to 'out.ogv': 
[17] =>  Stream #0.0(und): Video: libtheora, yuv420p, 640x320, q=2-31, 200 kb/s, 90k tbn, 30 tbc 
[18] =>  Stream #0.1(und): Audio: vorbis, 44100 Hz, mono, s16, 64 kb/s 
[19] => Stream mapping: 
[20] => Stream #0.0 -> #0.0 
[21] => Stream #0.1 -> #0.1 
[22] => Press [q] to stop encoding 

它似乎是正确的，对不对？

但电影只有1秒左右。 这是为什么？

我没有获得ffmpeg2theora，所以请不要认为:)

Answer 1

输入文件有一个奇怪的，也许错帧率（FPS 1200）

尝试强制的帧速率输入文件：

的ffmpeg -r 30 -i test.mov -s 640X320 -vcodec libtheora -acodec libvorbis out.ogv

（的参数顺序为显著）