[SOLVED] Help with Dolphin service menu

[oshunluvr]

I have a couple Dolphin service menus for file conversions using ffmpeg. For the life of me I cannot figure out how to not retain the original file extension.

For example: converting "MySong.m4a" to mp3 results in "MySong.m4a.mp3". Obviously I want "MySong.mp3"

The functional part looks like this currently: ffmpeg -i %u -y %u.mp3

I've tried this, but the conversion fails: ffmpeg -i %u -y $(basename %u | sed 's/\(.*\)\..*/\1/').mp3

I've also tried using a variable like this: fn=$(basename %u | sed 's/\(.*\)\..*/\1/'); ffmpeg -i %u -y "$fn" | sed 's/\(.*\)\..*/\1/').mp3 but that just spits out an error message:

Syntax error in command dbusRef=$(kdialog --title="Conversion ffmpeg" --progressbar "
Converting $(basename %f) " 0); fn=$(basename %u | sed 's/\.*\\.*/\/'); ffmpeg -i %u -y "$fn" | sed 's/\.*\\.*/\/').mp3;
qdbus $dbusRef close; kdialog --title "Conversion complete" --passivepopup "$(basename %f) converted to MP3."; coming from
​

[oshunluvr]

This doesn't work either:

ffmpeg -i %u -y $(%u | sed 's/\(.*\)\..*/\1/').mp3

There's a delay like it's doing the conversion, but no output file

[oshunluvr]

Eureka! This seems to work:

fn=%u; ffmpeg -i %u -y "${fn%.*}".mp3

[jlittle]

For those that worry about bashisms, removing smallest or largest, prefix or suffix, patterns are POSIX shell features, so they work in dash.