`ffmpeg` is a free software project aimed at producing tools (libraries and programs) for handling multimedia data.

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2
votes
1answer
4k views

ffmpeg and libmp3lame produces bad audio quality?

when I get a flash video from YouTube, why is the quality of the audio much worse than the origin video on YouTube? When I downloaded the flash movie, I convert it to avi like this: ffmpeg -i ...
3
votes
1answer
755 views

How to get lilbmp3lame encoding to work with ffmpeg?

When I am converting an FLV to an AVI one, I always get: Unknown encoder 'libmp3lame' But I've installed it with Ubuntu Software Center. I am using this command: ffmpeg -i video.flv -acodec ...
2
votes
2answers
468 views

No output produced when using winFF

I am using winFF in Ubuntu 10.04. WinFF is a graphical frontend to ffmpeg. Typically, after selecting a file in WinFF, setting my conversion settings and pressing the "Convert" button, a console ...
2
votes
3answers
2k views

installing ffmpeg-php on centos

With the help of this guide, I am trying to install ffmpeg using these commands: # cd ffmpeg-php/branches/ffmpeg-php/ffmpeg-php-0.6.1/ # replace 'PIX_FMT_RGBA32' 'PIX_FMT_RGB32' -- * # phpize # ...
32
votes
7answers
23k views

How to grep standard error stream (stderr)?

I am using ffmpeg to get the meta info of an audio clip. But I am unable to grep it. $ ffmpeg -i 01-Daemon.mp3 |grep -i Duration FFmpeg version SVN-r15261, Copyright (c) 2000-2008 Fabrice ...
13
votes
4answers
7k views

How do I merge two *.avi files into one

I have two *.avi files: sequence1.avi sequence2.avi How do I merge these two files using a command-line or GUI?
16
votes
4answers
20k views

How can I use ffmpeg to split MPEG video into 10 minute chunks?

There is often a need in the open source or active developer community to publish large video segments online. (Meet-up videos, campouts, tech talks...) Being that I am a developer and not a ...
4
votes
3answers
3k views

Transcoding MJPEG Stream to FLV or MP4

I want to transcode MJPEG stream that comes from IP camera (http://xx.yy.zz.tt:8080/video.cgi) to FLV or MP4 stream under Linux OS so that users can play the file using a web based Flash player such ...