Le Hollandais Volant

ffmpeg -i animated.gif -movflags faststart -pix_fmt yuv420p -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" video.mp4

# convertir un fichier
ffmpeg -i audio.flac -c:v copy -c:a alac audio.m4a

# convertir un ensemble de fichiers
for f in ./*; do ffmpeg -i "$f" -c:v copy -c:a alac "${f%.*}.m4a"; done

<Limit POST PUT DELETE>
    order allow,deny
    allow from all
    deny from xxx.xxx.xxx.xxx
</Limit>

<input id="range" type="range" min="0" max="10.0858" value="6.0868" step="0.0001" /> 
<input type="number" id="output" value="440" max="24000" min="1" step="1" />

<script>

'use strict';

let rangeElem = document.getElementById('range');
let outputElem = document.getElementById('output');

rangeElem.addEventListener('input', function() {
    let value = rangeElem.value;
    let adjusted = Math.exp(value);
    outputElem.value = adjusted.toFixed(0);
});

outputElem.addEventListener('input', function() {
    let value = outputElem.value;
	  let adjusted = Math.log(value);
    rangeElem.value = adjusted;
});

</script>

// nouveau module :
Function ColorIndex(CellColor As Range)
    ColorIndex = CellColor.Interior.ColorIndex 
    ActiveWorkbook.ForceFullCalculation = True
End Function

// Puis utiliser la fonction ColorIndex()