Install ffmpeg for Windows11 and PATH setting¶

Ref. JP

Download Windows EXE Files¶

Downlaod FFmpeg
- Get packages & executable files -> click Windows logo
- Windows EXE Files -> Windows builds from gyan.dev
latest git master branch build -> ffmpeg-git-full.7z
- Download and unzip

rename ffmpeg-2024-01-24-git-00b288da73-full_build to FFmpeg and move to under C:\Users\yuichi

PS C:\Users\yuichi> ls
    ディレクトリ: C:\Users\yuichi

Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
d-----        2024/01/28     23:25                FFmpeg

PS C:\Users\yuichi> cd .\FFmpeg\bin
PS C:\Users\yuichi\FFmpeg\bin> pwd

Path
----
C:\Users\yuichi\FFmpeg\bin

PATH Setting¶

Alt text

Check¶

PS C:\Users\yuichi> ffmpeg -version
ffmpeg version 2024-01-24-git-00b288da73-full_build-www.gyan.dev Copyright (c) 2000-2024 the FFmpeg developers

For Final project video¶

Save Output video in another folder¶

cd path/to/presentation.mp4
mkdir -p video && ffmpeg -i presentation.mp4 -vcodec libx264 -crf 25 -preset medium -vf scale=-2:1080 -acodec libmp3lame -q:a 4 -ar 48000 -ac 2 video/presentation.mp4

If the file size is larger than 10MB, try larger number in `-crf`¶

cd path/to/presentation.mp4
mkdir -p video && ffmpeg -i presentation.mp4 -vcodec libx264 -crf 30 -preset medium -vf scale=-2:1080 -acodec libmp3lame -q:a 4 -ar 48000 -ac 2 video/presentation.mp4

Note

CRF (Constant Rate Factor) is a parameter used in FFmpeg for H.264 (and H.265) video encoding to control the quality of the output video. It allows you to balance the trade-off between video quality and file size.
CRF values range from 0 to 51.

High Quality: -crf 18
- Produces very high-quality video with a larger file size.
Balanced Quality: -crf 23
- Provides a good balance between quality and file size, commonly used for general purposes.
Lower Quality: -crf 28
- Results in a smaller file size with lower video quality.

Last update: July 13, 2024