Argthtjtr

For Linux and macOS this can be done in one line, using parameter expansion to change the filename extension of the output file:

for i in *.avi; do ffmpeg -i "$i" "${i%.*}.mp4"; done

And on Windows:

FOR /F "tokens=*" %G IN ('dir /b *.flac') DO ffmpeg -i "%G" -acodec mp3 "%~nG.mp3"

A one-line bash script would be easy to do - replace *.avi with your filetype:

for i in *.avi; do ffmpeg -i "$i" -qscale 0 "$(basename "$i" .avi)".mov  ; done

To convert with subdirectories use e.g.

find . -exec ffmpeg -i {} {}.mp3 ;

For anyone who wants to batch convert anything with ffmpeg but would like to have a convenient Windows interface, I developed this front-end:

https://sourceforge.net/projects/ffmpeg-batch

It adds to ffmpeg a window fashion interface, progress bars and time remaining info, features I always missed when using ffmpeg.

If you want a graphical interface to batch process with ffmpegX, try Quick Batcher. It's free and will take your last ffmpegX settings to convert files you drop into it.

Note that you can't drag-drop folders onto Quick Batcher. So select files and then put them through Quick Batcher.

for i in *.flac;

  do name=`echo "${i%.*}"`;

  echo $name;

  ffmpeg -i "${i}" -ab 320k -map_metadata 0 -id3v2_version 3 "${name}".mp3;

done

Batch process flac files into mp3 (safe for file names with spaces) using [1] [2]

If you have GNU parallel you could convert all .avi files below vid_dir to mp4 in parallel, using all except one of your CPU cores with

find vid_dir -type f -name '*.avi' -not -empty -print0 |

    parallel -0 -j -1 ffmpeg -loglevel fatal -i {} {.}.mp4

To convert from/to different formats, change '*.avi' or .mp4 as needed. GNU parallel is listed in most Linux distributions' repositories in a package which is usually called parallel.

I know this might be redundant but I use this script to batch convert files.

old_extension=$1

new_extension=$2



for i in *."$old_extension";

  do ffmpeg -i "$i" "${i%.*}.$new_extension";

done

It takes 2 arguments to make it more flexible :

1. the extension you want to convert from


2. the new extension you want to convert to

I create an alias for it but you can also use it manually like this:

sh batch_convert.sh mkv mp4

This would convert all the mkv files into mp4 files.

As you can see it slightly more versatile. As long as ffmpeg can convert it you can specify any two extensions.

Another simple solution that hasn't been suggested yet would be to use xargs:

ls *.avi | xargs -i -n1 ffmpeg -i {} "{}.mp4"

One minor pitfall is the awkward naming of output files (e.g. input.avi.mp4). A possible workaround for this might be:

ls *.avi | xargs -i -n1 bash -c "i={}; ffmpeg -i {} "${i%.*}.mp4""

little php script to do it:

#!/usr/bin/env php

<?php

declare(strict_types = 1);

if ($argc !== 2) {

    fprintf ( STDERR, "usage: %s dirn", $argv [0] );

    die ( 1 );

}

$dir = rtrim ( $argv [1], DIRECTORY_SEPARATOR );

if (! is_readable ( $dir )) {

    fprintf ( STDERR, "supplied path is not readable! (try running as an administrator?)" );

    die(1);

}

if (! is_dir ( $dir )) {

    fprintf ( STDERR, "supplied path is not a directory!" );

    die(1);

}

$files = glob ( $dir . DIRECTORY_SEPARATOR . '*.avi' );

foreach ( $files as $file ) {

    system ( "ffmpeg -i " . escapeshellarg ( $file ) . ' ' . escapeshellarg ( $file . '.mp4' ) );

}