video_tips
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Some tips about video files
Usually, I have to deal with video files to make some tests, so I have decided to create this space to save all those little tips I need from time to time.
How to merge many video files together?
First at all, install mencoder:
- sudo apt-get install mencoder
The command:
- mencoder -oac copy -ovc copy test_1.avi test_2.avi testN.avi -o completeFile.avi
How to convert an AVI file to FLV?
I found a great post right here: http://forums.liveleak.com/showthread.php?t=1716
The short version:
The command:
- ffmpeg -i input.avi -b 2028k -s 640×480 -r 30 -acodec copy output.flv
Little explanation:
ffmpeg: the program -i input.avi: the input file -b 2028k: the output bitrate -s 640x480: the output resolution -r 30: the output frames per second -acodec copy: the output audio codec output.flv: the output file
How to extract audio from a video file?
The command:
- ffmpeg -i example.avi -vn -acodec pcm_s16le -ar 44100 -ac 2 example.wav
How to remove audio from a video file?
The command:
- ffmpeg -i input.flv -an -vcodec copy output.flv
Where output.flv is the video without sound.
How to mix a video with a sound file?
The command:
- ffmpeg -vcodec copy -i images.mpg -i sound.mp3 output.mpg
Additional tips
video_tips.txt · Last modified: 2017/03/11 23:22 by 127.0.0.1