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5 changed files with 15 additions and 76 deletions

1
.gitignore vendored
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@ -1,3 +1,2 @@
public/assets/scripts/ffmpeg/
public/assets/scripts/core/

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@ -1,69 +1,32 @@
const ffmpeg = new FFmpegWASM.FFmpeg();
const notifier = new Notifier();
async function compress() {
document.getElementById("uploaded-video").pause();
showSection("loading");
const filesize = document.getElementById("filesize").value;
const filesizeUnit = document.getElementById("filesize-unit").value;
const file = document.getElementById("file-input").files[0];
const videoLength = document.getElementById("uploaded-video").duration;
let targetFilesize; // Stored in kBit
switch (filesizeUnit) {
case "K": targetFilesize = filesize * 8; break;
case "M": targetFilesize = filesize * 8000; break;
}
updateProgress(0);
ffmpeg.on("log", event => {
console.log("[ffmpeg]", event.type, event.message);
});
let pass = 1;
updateProgress(0, pass);
ffmpeg.on("progress", event => {
updateProgress(event.progress, pass);
const ffmpeg = new FFmpegWASM.FFmpeg();
ffmpeg.on("progress", data => {
console.log(data);
updateProgress(data.progress);
});
await ffmpeg.load({ coreURL: "/assets/scripts/core/package/dist/umd/ffmpeg-core.js" });
await ffmpeg.writeFile(file.name, await readFromBlob(file));
// Use Two-Pass to create a video file with desired file size
// https://trac.ffmpeg.org/wiki/Encode/H.264#twopass
const bitrate = Math.floor(targetFilesize / videoLength) - 128; // Subtract audio bitrate
console.debug("Target bitrate:", bitrate, "Video length:", videoLength);
const options = ["-i", file.name, "-preset", "ultrafast", "-c:v", "libx264", "-b:v", bitrate + "k"];
await ffmpeg.exec([...options, "-pass", "1", "-vsync", "cfr", "-f", "null", "/dev/null"]);
pass = 2;
await ffmpeg.exec([...options, "-pass", "2", "-c:a", "copy", "-b:a", "128k", "compressed.mp4"]);
await ffmpeg.exec(["-i", file.name, "-preset", "veryfast", "-fs", filesize + filesizeUnit, "compressed.mp4"]);
const video = await ffmpeg.readFile("compressed.mp4");
notifier.notifyFinished();
location.href = URL.createObjectURL(new Blob([video.buffer], { type: "video/mp4" }));
}
function cancel() {
ffmpeg.terminate();
showSection("file-picker");
}
function updateProgress(progress, pass) {
function updateProgress(progress) {
const percent = (progress * 100).toFixed(1) + "%";
document.getElementById("progress-step-value").innerText = pass;
document.getElementById("progress-percentage").innerText = percent;
document.getElementById("progress-indicator").style.clipPath = `rect(0 ${percent} 100% 0)`;
}

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@ -40,3 +40,4 @@ function showElements() {
}
}, TRANSITION_TIME);
}

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@ -102,10 +102,9 @@ button.primary:focus {
}
button.simple {
border: 1px solid #9E9E9E;
border-radius: 0.25rem;
border: none;
background-color: transparent;
transition: all 100ms;
transition: color 100ms;
cursor: pointer;
color: #9E9E9E;
margin: 1rem auto;
@ -113,12 +112,6 @@ button.simple {
button.simple:hover {
color: black;
border-color: black;
}
button.simple:focus {
border-color: black;
outline: none;
}
input, select {
@ -136,14 +129,6 @@ input:focus, select:focus {
box-shadow: 0 4px 4px rgba(0, 0, 0, 0.2);
}
input[type=checkbox] {
accent-color: #4CAF50;
}
label {
color: #757575;
}
#filesize {
border-top-right-radius: 0;
border-bottom-right-radius: 0;
@ -165,7 +150,7 @@ label {
#loading-title {
color: #757575;
font-size: 2.5rem;
font-size: 3rem;
font-weight: bold;
margin-top: 4rem;
margin-bottom: 0;
@ -183,6 +168,7 @@ label {
margin: auto;
background-color: #E0E0E0;
position: relative;
margin-top: 3rem;
}
#progress-indicator {
@ -199,8 +185,3 @@ label {
font-size: 1.2rem;
}
#progress-step {
font-weight: bold;
margin-top: 3rem;
margin-bottom: 0.5rem;
}

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@ -1,10 +1,9 @@
<!DOCTYPE html>
<html lang="en">
<html>
<head>
<meta charset="UTF-8">
<title>Video Compressor</title>
<script defer src="/assets/scripts/ffmpeg/package/dist/umd/ffmpeg.js"></script>
<script defer src="/assets/scripts/Notifier.js"></script>
<script defer src="/assets/scripts/ui.js"></script>
<script defer src="/assets/scripts/main.js"></script>
<link rel="stylesheet" href="/assets/style/main.css">
@ -25,11 +24,12 @@
<video id="uploaded-video" controls autoplay></video>
<button id="change-file" onclick="openFileSelector()" class="simple">Change video</button>
<input id="filesize" type="number" value="10" size="3" placeholder="#" style="margin-top: 1rem"><!--
<input id="filesize" type="number" value="10" size="3" placeholder="#"><!--
--><select id="filesize-unit">
<option value="K">KB</option>
<option value="M" selected>MB</option>
<option value="G">GB</option>
</select>
<button id="compress" onclick="compress()" class="primary">Go!</button>
@ -39,16 +39,11 @@
<h3 id="loading-title">Please wait...</h3>
<p id="loading-description">This may take a while</p>
<p id="progress-step">Step <span id="progress-step-value">1</span>/2</p>
<div id="progress-container">
<div id="progress-indicator"></div>
</div>
<p id="progress-percentage">0%</p>
<p><label><input id="notify-checkbox" type="checkbox"> Notify on finish</label></p>
<button id="cancel" onclick="cancel()" class="simple">Cancel</button>
</section>
</body>
</html>