Combine JPG and MP3 to MP4 using FileManager-Actions and shell script (Ubuntu 18.04)

Question

What I try to achieve:

Expanding my Nautilus context menu by an action to simply select a JPG-file and a MP3-file to combine them to a MP4-file like I already do in terminal by this command:

ffmpeg -r 1 -loop 1 -i image.jpg -i audio.mp3 -acodec copy -r 1 -shortest -vf scale=1920:1080 video.mp4

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This is what I've done:

I created a file composite_video.sh and saved it in /opt/lampp/htdocs/git/nautilus-scripts (to sync it with my GitHub, too)

#!/bin/bash
if [ "$#" -ne 2 ]; then
    echo "Call the script with ./$(basename "$0") (path to image) (path to video)"
else
    ffmpeg -r 1 -loop 1 -i "$1" -i "$2" -acodec copy -r 1 -shortest -vf scale=1920:1080 video.mp4
fi

Then I created a new FileManager-Action like this:

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This don't work. If I select JPG and MP3 and select action in Nautilus context menu nothing happens. What did I wrong?

Answer 1

For one... You don't have parameters passing. You aren't giving it any files to process.

I am using ubuntu 20.04 in Flashback... so there could be some other differences you may have to look into... But it works for me.

just for notes... In addition to filemanager-actions, I also installed nautilus-actions and nautilus-extension-fma since I am using nautilus... I don't know what effect this had because I believed it wasn't working for me at first.

I didn't notice it working at all until I did nautilus -q

Then when I did, I found I had to run nautilus, either from the terminal or under the Execution tab select "Display Output" so I could watch the logs to see why it was not executing... running a continuous tail on /var/log/syslog in a separate terminal also provided the same output.

The main problem after figuring out I had to (well first, right click on the icon) use the %F parameter type on the command tab (%F=file list...or %U=uri list), was that it read the list of parameters in alphabetical order... haven't figured out the "proper" fix for that yet. So the workaround, I had to rename the song so that it got read last.... as you can see in the picture.