Install FFmpeg by Homebrew

FFmpeg is a free software that can convert and edit videos, and can be run on the terminal.
Basically, you can do a wide range of things as long as you know how to use the commands, such as cutting, trimming, cropping, converting video formats, changing the speed, and compositing images.

There are several video editing software available, but some are paid, and even free ones have limited functionality, or are difficult to understand how to use, so I had the opportunity to edit using ffmpeg, so I used the installation method this time. I will summarize the method.

Step1) Install Homebrew. Open your terminal on MacOS and run the following command.

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

Step2) Install FFmpeg by brew command.

brew install ffmpeg

Step3) Test. For example, convert a mov video file to mp4 format.

ffmpeg -i input.mov output.mp4

You also could learn more usage infomation by running `ffmpeg –help`.

ffmpeg version 7.0 Copyright (c) 2000-2024 the FFmpeg developers
  built with Apple clang version 15.0.0 (clang-1500.3.9.4)
  configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/7.0_1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopenvino --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon
  libavutil      59.  8.100 / 59.  8.100
  libavcodec     61.  3.100 / 61.  3.100
  libavformat    61.  1.100 / 61.  1.100
  libavdevice    61.  1.100 / 61.  1.100
  libavfilter    10.  1.100 / 10.  1.100
  libswscale      8.  1.100 /  8.  1.100
  libswresample   5.  1.100 /  5.  1.100
  libpostproc    58.  1.100 / 58.  1.100
Universal media converter
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

Getting help:
    -h      -- print basic options
    -h long -- print more options
    -h full -- print all options (including all format and codec specific options, very long)
    -h type=name -- print all options for the named decoder/encoder/demuxer/muxer/filter/bsf/protocol
    See man ffmpeg for detailed description of the options.

Per-stream options can be followed by :<stream_spec> to apply that option to specific streams only. <stream_spec> can be a stream index, or v/a/s for video/audio/subtitle (see manual for full syntax).

Print help / information / capabilities:
-L                  show license
-h <topic>          show help
-version            show version
-muxers             show available muxers
-demuxers           show available demuxers
-devices            show available devices
-decoders           show available decoders
-encoders           show available encoders
-filters            show available filters
-pix_fmts           show available pixel formats
-layouts            show standard channel layouts
-sample_fmts        show available audio sample formats

Global options (affect whole program instead of just one file):
-v <loglevel>       set logging level
-y                  overwrite output files
-n                  never overwrite output files
-stats              print progress report during encoding

Per-file options (input and output):
-f <fmt>            force container format (auto-detected otherwise)
-t <duration>       stop transcoding after specified duration
-to <time_stop>     stop transcoding after specified time is reached
-ss <time_off>      start transcoding at specified time


Per-file options (output-only):
-metadata[:<spec>] <key=value>  add metadata

Per-stream options:
-c[:<stream_spec>] <codec>  select encoder/decoder ('copy' to copy stream without reencoding)
-filter[:<stream_spec>] <filter_graph>  apply specified filters to audio/video

Video options:
-r[:<stream_spec>] <rate>  override input framerate/convert to given output framerate (Hz value, fraction or abbreviation)
-aspect[:<stream_spec>] <aspect>  set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)
-vn                 disable video
-vcodec <codec>     alias for -c:v (select encoder/decoder for video streams)
-vf <filter_graph>  alias for -filter:v (apply filters to video streams)
-b <bitrate>        video bitrate (please use -b:v)

Audio options:
-aq <quality>       set audio quality (codec-specific)
-ar[:<stream_spec>] <rate>  set audio sampling rate (in Hz)
-ac[:<stream_spec>] <channels>  set number of audio channels
-an                 disable audio
-acodec <codec>     alias for -c:a (select encoder/decoder for audio streams)
-ab <bitrate>       alias for -b:a (select bitrate for audio streams)
-af <filter_graph>  alias for -filter:a (apply filters to audio streams)

Subtitle options:
-sn                 disable subtitle
-scodec <codec>     alias for -c:s (select encoder/decoder for subtitle streams)

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