Convert Movie(.mov) file to Gif(.gif) file in one command line in Mac Terminal

Convert .mov or .MP4 to .gif.md

This notes is written by Sheldon. You can find me with #iOSBySheldon in Github, Youtube, Facebook, etc.

Need

Convert .mov/.MP4 to .gif

Reason

As a developer, I feel better to upload a short video when I create the pull request to show other viewers what I did in this PR. I tried .mov format directly got after finishing recording screen using Quicktime, however, gif offers preview in most web pages, and has smaller file size.

This is not limited to developer, anyone has this need can use this method to convert the files.

Thoughts

I tried to use some software to do the job, but my hands are tied since I don't have admin in my office comupter, but I do have brew installed. And I think using command line tool will be a good choice. So I will use HomeBrew, ffmpeg, gifsicle to do the job.

Solution

1. download HomeBrew
2. $brew install ffmpeg
3. $brew install gifsicle
4. $ffmpeg -i in.mov -pix_fmt rgb8 -r 10 output.gif && gifsicle -O3 output.gif -o output.gif

Explanation

1. Convert the file to gif using ffmpeg

- input path argument `-i`
- pixel format argument `-pix_fmt`
- removing some frames using framerate argument `-r`
- end `ffmpeg` with new path/to/filename

2. Optimize the same output file with third option -O3 and rewrite the generated gif file from last step
3. Notes: using && to make sure the conversion sucess before optimizing

References

1. https://brew.sh
2. https://www.ffmpeg.org
3. https://www.lcdf.org/gifsicle/
4. full video tutorial with explanation https://www.youtube.com/watch?v=QKtRMFvvDL0

Thanks for the function @mcmoe! But maybe return 1 would be safer than exit 1 in a function. My whole shell exited the first time I ran v2g without arguments.

Ah, a return would be much better indeed @seanf 👍
I've updated that in my fork: https://gist.github.com/mcmoe/c76895ee86bd5293d58aca7a75afb6b2 and in my comment above

Here is a simple shell function I wrote encapsulating this:

,to-gif() {
    # Based on https://gist.github.com/SheldonWangRJT/8d3f44a35c8d1386a396b9b49b43c385
    output_file="$1.gif"

    ffmpeg -i $1 -pix_fmt rgb8 -r 10 $output_file && gifsicle -O3 $output_file -o $output_file
}

@mcmoe's function has way more options, and is probably better if you care more about your results than I 😅

Thanks! To be honest, I'm way more comfortable with the terminal than with GUIs, so this is greatly appreciated 😊

Update on @Vages to mute console and downscale by 50% for propersize with retina on macOS

gif() {
    # Based on https://gist.github.com/SheldonWangRJT/8d3f44a35c8d1386a396b9b49b43c385
    output_file="$1.gif"
    ffmpeg -y -i $1 -v quiet -vf scale=iw/2:ih/2 -pix_fmt rgb8 -r 10 $output_file && gifsicle -O3 $output_file -o $output_file
}

very handy, thanks!

Glad I came across this via ddg search. Thanks for sharing. Worked for me perfectly.

Yea this is awesome, thank you.

Update on @Vages to mute console and downscale by 50% for propersize with retina on macOS

gif() {
    # Based on https://gist.github.com/SheldonWangRJT/8d3f44a35c8d1386a396b9b49b43c385
    output_file="$1.gif"
    ffmpeg -y -i $1 -v quiet -vf scale=iw/2:ih/2 -pix_fmt rgb8 -r 10 $output_file && gifsicle -O3 $output_file -o $output_file
}

I got a bit annoyed by Screen Recording YYYY-MM-DD… and superflous extensions, so I've added some extension stripping (far from perfect, but YOLO) and some quoting

v2gif() {
    # Based on https://gist.github.com/SheldonWangRJT/8d3f44a35c8d1386a396b9b49b43c385
    output_file="${1%.*}.gif"
    ffmpeg -y -i "$1" -v quiet -vf scale=iw/2:ih/2 -pix_fmt rgb8 -r 10 "$output_file" && gifsicle -O3 "$output_file" -o "$output_file"
}