{"id":27850,"date":"2025-07-17T08:38:39","date_gmt":"2025-07-17T08:38:39","guid":{"rendered":"https:\/\/linux.how2shout.com\/?p=27850"},"modified":"2025-07-17T08:40:10","modified_gmt":"2025-07-17T08:40:10","slug":"how-to-build-ffmpeg-webassembly-on-ubuntu-24-04-linux","status":"publish","type":"post","link":"https:\/\/linux.how2shout.com\/how-to-build-ffmpeg-webassembly-on-ubuntu-24-04-linux\/","title":{"rendered":"How to Build FFmpeg WebAssembly on Ubuntu 24.04 Linux (Step-by-Step)"},"content":{"rendered":"\n<p>FFmpeg stands out when it comes to an open-source library for multimedia processing, handling video transcoding, and audio manipulation across various applications. WebAssembly (WASM), on the other hand, allows code written in C\/C++ to run in web browsers at near-native speed.<\/p>\n\n\n\n<p>Most of the time, we use it traditionally, confined to server-side operations; however, with the rise of WebAssembly, it has opened exciting possibilities for bringing FFmpeg&#8217;s power directly into web browsers.<\/p>\n\n\n\n<p>If you&#8217;re looking to build FFmpeg WebAssembly in Ubuntu 24.04  Linux then we have listed quick steps which can help the beginners to install the dependencies and with commands that are required to test the FFmpeg WebAssembly.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-prerequisites-for-ffmpeg-webassembly-build\">Prerequisites for FFmpeg WebAssembly Build<\/h2>\n\n\n\n<p>FFmpeg WebAssembly build process on Ubuntu 24.04, we need to ensure our system meets the following requirements:<\/p>\n\n\n\n<p>Your Ubuntu 24.04 LTS system should be fresh or fully updated, with at least 8 GB of RAM and 10 GB of free disk space for the compilation process.<\/p>\n\n\n\n<p>Essential development tools include Git for source code management, Python 3 for build scripts, CMake for cross-platform builds, and curl or wget for downloading dependencies, which we will learn how to install in this article.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-is-the-need-to-build-ffmpeg-to-webassembly\">What is the need to Build FFmpeg to WebAssembly?<\/h2>\n\n\n\n<p>Here\u2019s why you may want to compile FFmpeg to WebAssembly:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Run FFmpeg directly in the browser without server dependencies.<\/li>\n\n\n\n<li>Enable client-side video\/audio processing.<\/li>\n\n\n\n<li>Build offline-capable web apps for media editing or playback.<\/li>\n\n\n\n<li>Improve speed and interactivity in browser-based tools.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-step-1-update-your-system\">Step 1: Update Your System<\/h2>\n\n\n\n<p>Let&#8217;s as regular practice before starting any installation on Ubuntu Linux, update your system using the give command.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">sudo apt update &amp;&amp; sudo apt upgrade -y<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Step 2: Install Required Packages<\/h2>\n\n\n\n<p>Next, there are some tools and packages we required to build a tool, all of them are available right in the default system repository of <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">sudo apt install -y git cmake build-essential python3 python3-pip autoconf automake libtool pkg-config yasm nasm<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-step-3-install-emscripten-sdk-emcc-compiler\">Step 3: Install Emscripten SDK (emcc compiler)<\/h2>\n\n\n\n<p>Emscripten is a toolchain that compiles C\/C++ code into WebAssembly (.wasm). If you don&#8217;t know emcc is the compiler (like gcc, but for WebAssembly), hence we need to install to build ffmpeg for WebAssembly.<\/p>\n\n\n\n<p>Clone it from its latest repository:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">git clone https:\/\/github.com\/emscripten-core\/emsdk.git<\/code><\/pre>\n\n\n\n<p>Once done switch to the downloaded repo folder:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">cd emsdk<\/code><\/pre>\n\n\n\n<p>After that install and activate the latest version of Emscripten.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">.\/emsdk install latest\n\n.\/emsdk activate latest<\/code><\/pre>\n\n\n\n<p>Adds Emscripten tools to your terminal session, so that later we can use emcc command from anywhere in our command temrinal.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">source .\/emsdk_env.sh <\/code><\/pre>\n\n\n\n<p>Also add the bin directory to your path because we have to done that manually in our case.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">echo 'export PATH=$HOME\/emsdk\/upstream\/bin:$PATH' >> ~\/.bashrc<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">source ~\/.bashrc<\/code><\/pre>\n\n\n\n<p><strong>Make sure emcc is available:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">emcc -v<\/code><\/pre>\n\n\n\n<p>Also , check if <strong>llvm-nm<\/strong> Is Available<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">which llvm-nm<\/code><\/pre>\n\n\n\n<p>You should see something like:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">\/home\/ubuntu\/emsdk\/upstream\/bin\/llvm-nm<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-step-4-clone-ffmpeg-source\">Step 4: Clone FFmpeg Source<\/h2>\n\n\n\n<p>Now, we need to download the FFmpeg C\/C++ source code to compile it into WASM which can be get easily from its official Git repo, this will also ensures we&#8217;re using the latest or most stable version.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">git clone https:\/\/git.ffmpeg.org\/ffmpeg.git ffmpeg-wasm<\/code><\/pre>\n\n\n\n<p><strong>Swtich to created directory:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">cd ffmpeg-wasm<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Step 5: Configure FFmpeg for WebAssembly<\/h2>\n\n\n\n<p>This step configures FFmpeg to be compatible with WebAssembly:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>--cc=emcc<\/code>: Use Emscripten compiler.<\/li>\n\n\n\n<li><code>--disable-x86asm<\/code>: WebAssembly doesn&#8217;t support CPU-specific assembly like x86.<\/li>\n\n\n\n<li><code>--disable-*<\/code>: Strip out everything you don\u2019t need to reduce size and avoid unsupported modules.<\/li>\n\n\n\n<li><code>--enable-*<\/code>: Only include the codecs, formats, and filters that are required by your use case (e.g., decoding MP3, H.264 videos).<\/li>\n\n\n\n<li><code>llvm-nm<\/code> to parse <code>.o<\/code> files generated by <code>emcc<\/code>.<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>You can tweak the <code>--enable-*<\/code> list depending on what media formats you want to support in your browser app.<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">emconfigure .\/configure \\\n  --cc=emcc \\\n  --ar=emar \\\n  --ranlib=emranlib \\\n  --nm=llvm-nm \\\n  --target-os=none \\\n  --arch=x86_32 \\\n  --disable-x86asm \\\n  --disable-inline-asm \\\n  --disable-programs \\\n  --disable-doc \\\n  --disable-network \\\n  --disable-everything \\\n  --enable-demuxer=wav \\\n  --enable-decoder=pcm_s16le \\\n  --enable-muxer=wav \\\n  --enable-encoder=pcm_s16le \\\n  --enable-protocol=file<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-step-6-compile-ffmpeg-to-webassembly\">Step 6: Compile FFmpeg to WebAssembly<\/h2>\n\n\n\n<p>This command compiles the C source code into <code>.o<\/code> object files using Emscripten.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>emmake<\/code> wraps the standard <code>make<\/code> tool so it knows to use <code>emcc<\/code>, <code>emar<\/code>, etc.<\/li>\n\n\n\n<li><code>-j$(nproc)<\/code> uses all CPU cores for faster compilation.<\/li>\n<\/ul>\n\n\n\n<p>This will generate a lot of <code>.o<\/code> files in subdirectories like <code>libavcodec\/<\/code>, <code>libavformat\/<\/code>, etc.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">emmake make -j$(nproc)<\/code><\/pre>\n\n\n\n<p>Once done, check the current <strong>folder <\/strong>has &#8211; <strong>ffmpeg.js<\/strong> and <strong>ffmpeg.wasm<\/strong> files or not.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">ls <\/code><\/pre>\n\n\n\n<p><strong>If you don&#8217;t have these two files <\/strong>then we need to <strong>create them manually<\/strong> using <strong>ffmpeg_wrapper.c<\/strong>.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Explanation<\/strong>: WebAssembly runs a main function. You need a small wrapper that acts as an entry point and can be called from JavaScript. Even if you don&#8217;t use it to process files, it&#8217;s a good way to initialize the module.<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">nano ffmpeg_wrapper.c<\/code><\/pre>\n\n\n\n<p><strong>Add this code and save the file.<\/strong> Use Ctrl+X, Y and Enter keys to save and exit nano text editor.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">#include &lt;stdio.h>\n#include &lt;libavformat\/avformat.h>\n#include &lt;libavcodec\/avcodec.h>\n\nint main() {\n    printf(\"FFmpeg WASM module initialized.\\n\");\n    fflush(stdout); \/\/ &lt;-- ADD THIS\n    return 0;\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-step-7-compile-the-final-wasm-binary\">Step 7: Compile the Final WASM Binary<\/h2>\n\n\n\n<p>You\u2019re now linking all the compiled FFmpeg object files into a final WebAssembly module:<\/p>\n\n\n\n<p>This command will generate:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>ffmpeg.wasm<\/code>: WebAssembly binary<\/li>\n\n\n\n<li><code>ffmpeg.js<\/code>: JavaScript glue code<\/li>\n\n\n\n<li><code>ffmpeg.data<\/code> (if needed): any memory initialization<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">emcc -O3 \\\n  -s MODULARIZE=1 \\\n  -s EXPORT_NAME=\"FFmpegModule\" \\\n  -s EXPORTED_FUNCTIONS=\"['_main']\" \\\n  -s EXPORTED_RUNTIME_METHODS=\"['ccall', 'cwrap']\" \\\n  ffmpeg_wrapper.c \\\n  -I. \\\n  .\/libavcodec\/*.o .\/libavformat\/*.o .\/libavutil\/*.o \\\n  .\/libswresample\/*.o .\/libswscale\/*.o \\\n  -o ffmpeg.js<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Pro Tip (for real-world use)<\/h3>\n\n\n\n<p>If you want to use FFmpeg-WASM in real apps (e.g., to decode\/encode audio\/video), then instead of building from scratch, you can:<\/p>\n\n\n\n<p>\u2705 Use existing projects like: They\u2019re pre-built, optimized, and offer rich APIs.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/github.com\/ffmpegwasm\/ffmpeg.wasm\" target=\"_blank\" rel=\"noreferrer noopener\"><code>ffmpeg.wasm<\/code><\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/github.com\/Kagami\/ffmpeg.js\" target=\"_blank\" rel=\"noreferrer noopener\"><code>ffmpeg.js<\/code><\/a><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-step-8-test-ffmpeg-webassembly-in-browser\">Step 8: Test FFmpeg WebAssembly in Browser<\/h2>\n\n\n\n<p>To verify the compiled FFmpeg WebAssembly is working in a browser. Lets create a test file, for that inside your current folder which <strong>&#8220;ffmpeg-wasm<\/strong>&#8220;, create an <strong>index.html <\/strong>file and paste the code given in this step:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">nano index.html<\/code><\/pre>\n\n\n\n<p><strong>Paste these lines<\/strong> and save the file by pressing Ctrl+X, Y and hit the Enter key.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">&lt;!DOCTYPE html>\n&lt;html>\n&lt;head>\n  &lt;meta charset=\"UTF-8\" \/>\n  &lt;title>FFmpeg WASM Status&lt;\/title>\n&lt;\/head>\n&lt;body>\n  &lt;h1>FFmpeg WebAssembly Status&lt;\/h1>\n  &lt;div id=\"status\">Checking FFmpeg WASM...&lt;\/div>\n\n  &lt;script>\n    document.getElementById('status').innerText = \"Loading local FFmpeg WASM...>\n\n    \/\/ Ensure ffmpeg.js was compiled with Emscripten MODULARIZE=1 and EXPORT_NA>\n    const ffmpegScript = document.createElement('script');\n    ffmpegScript.src = 'ffmpeg.js';\n    ffmpegScript.onload = () => {\n      FFmpegModule().then((Module) => {\n        console.log(\"\u2705 Local FFmpeg WASM loaded.\");\n        document.getElementById('status').innerText = \"\u2705 FFmpeg WASM loaded fr>\n      }).catch(err => {\n        console.error(\"\u274c Error loading FFmpeg:\", err);\n        document.getElementById('status').innerText = \"\u274c Failed to load FFmpeg>\n      });\n    };\n    document.body.appendChild(ffmpegScript);\n  &lt;\/script>\n&lt;\/body>\n&lt;\/html><\/code><\/pre>\n\n\n\n<p>Run Python web server to quickly test FFmpeg WebAssembly:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">python3 -m http.server 8000<\/code><\/pre>\n\n\n\n<p>Now, open your browser and point to local address:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">http:\/\/localhost:8000<\/code><\/pre>\n\n\n\n<p> You will have something like shown in the given screenshot saying: <em>FFmpeg WASM loaded from local build.<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" loading=\"lazy\" decoding=\"async\" width=\"1232\" height=\"862\" src=\"https:\/\/linux.how2shout.com\/wp-content\/uploads\/2025\/07\/FFmpeg-WebAssembly-build-status-in-Ubuntu-24.04-Linux.jpg\" alt=\"FFmpeg WebAssembly build status in Ubuntu 24.04 Linux\" class=\"wp-image-27853\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\">Conclusion<\/h2>\n\n\n\n<p>Building FFmpeg WebAssembly on Ubuntu 24.04 opens up powerful possibilities for browser-based media processing. You&#8217;ve successfully navigated the entire process from setting up the development environment to creating optimized WebAssembly modules.<\/p>\n\n\n\n<p>Your next steps might include integrating this build into frontend applications, experimenting with different codec configurations, or exploring advanced WebAssembly features like SharedArrayBuffer for improved performance. So, keep experimenting.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faq\">FAQ<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1752740540188\"><strong class=\"schema-faq-question\"><strong>Can I enable full codec support?<\/strong> <\/strong> <p class=\"schema-faq-answer\">Yes, but be aware that enabling all codecs significantly increases the WebAssembly file size. Selectively enable only the codecs you need using <code>--enable-encoder=<\/code> and <code>--enable-decoder=<\/code> flags during configuration.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1752740551065\"><strong class=\"schema-faq-question\"><strong>Can this run in any browser?<\/strong> <\/strong> <p class=\"schema-faq-answer\">FFmpeg WebAssembly runs in all modern browsers that support WebAssembly, including Chrome, Firefox, Safari, and Edge. However, performance may vary between browsers, and some advanced features might have limited support.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1752740561461\"><strong class=\"schema-faq-question\"><strong>What&#8217;s the difference between ffmpeg.wasm and a custom build?<\/strong> <\/strong> <p class=\"schema-faq-answer\">A custom build allows you to control exactly which features are included, optimize for your specific use case, and potentially achieve smaller file sizes. Pre-built ffmpeg.wasm offers convenience but may include features you don&#8217;t need.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1752740570209\"><strong class=\"schema-faq-question\"><strong>Is it safe to use FFmpeg WASM in production?<\/strong> <\/strong> <p class=\"schema-faq-answer\">FFmpeg WebAssembly can be used in production, but consider factors like file size, loading time, and browser compatibility. Implement proper error handling and fallback mechanisms for unsupported browsers or failed loads.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1752740578465\"><strong class=\"schema-faq-question\"><strong>How do I update my FFmpeg WebAssembly build?<\/strong> <\/strong> <p class=\"schema-faq-answer\">To update, pull the latest FFmpeg source code, update your emsdk installation, and rebuild using the same configuration. Test thoroughly after updates to ensure compatibility with your application.<\/p> <\/div> <\/div>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>FFmpeg stands out when it comes to an open-source library for multimedia processing, handling video transcoding, and audio manipulation across various applications. WebAssembly (WASM), on the other hand, allows code written in C\/C++ to run in web browsers at near-native speed. Most of the time, we use it traditionally, confined to server-side operations; however, with [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":27855,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","_mbp_gutenberg_autopost":false,"footnotes":""},"categories":[3],"tags":[2931,28,31,29,3172],"class_list":{"0":"post-27850","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-ubuntu","8":"tag-developer","9":"tag-linux","10":"tag-tutorial","11":"tag-ubuntu","12":"tag-ubuntu-22-04"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.9 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>How to Build FFmpeg WebAssembly on Ubuntu 24.04 Linux (Step-by-Step) - LinuxShout<\/title>\n<meta name=\"description\" content=\"Learn how to compile FFmpeg to WebAssembly in Ubuntu 24.04 using Emscripten. Step-by-step guide with explanations and commands for building FFmpeg WASM.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/linux.how2shout.com\/how-to-build-ffmpeg-webassembly-on-ubuntu-24-04-linux\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Build FFmpeg WebAssembly on Ubuntu 24.04 Linux (Step-by-Step)\" \/>\n<meta property=\"og:description\" content=\"Learn how to compile FFmpeg to WebAssembly in Ubuntu 24.04 using Emscripten. 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However, I am still trying to learn Linux and whatever the problems I face, trying to give solutions for the same, here...","sameAs":["https:\/\/www.how2shout.com\/"],"url":"https:\/\/linux.how2shout.com\/author\/heyan\/"},{"@type":"Question","@id":"https:\/\/linux.how2shout.com\/how-to-build-ffmpeg-webassembly-on-ubuntu-24-04-linux\/#faq-question-1752740540188","position":1,"url":"https:\/\/linux.how2shout.com\/how-to-build-ffmpeg-webassembly-on-ubuntu-24-04-linux\/#faq-question-1752740540188","name":"Can I enable full codec support?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, but be aware that enabling all codecs significantly increases the WebAssembly file size. Selectively enable only the codecs you need using --enable-encoder= and --enable-decoder= flags during configuration.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/linux.how2shout.com\/how-to-build-ffmpeg-webassembly-on-ubuntu-24-04-linux\/#faq-question-1752740551065","position":2,"url":"https:\/\/linux.how2shout.com\/how-to-build-ffmpeg-webassembly-on-ubuntu-24-04-linux\/#faq-question-1752740551065","name":"Can this run in any browser?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"FFmpeg WebAssembly runs in all modern browsers that support WebAssembly, including Chrome, Firefox, Safari, and Edge. However, performance may vary between browsers, and some advanced features might have limited support.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/linux.how2shout.com\/how-to-build-ffmpeg-webassembly-on-ubuntu-24-04-linux\/#faq-question-1752740561461","position":3,"url":"https:\/\/linux.how2shout.com\/how-to-build-ffmpeg-webassembly-on-ubuntu-24-04-linux\/#faq-question-1752740561461","name":"What's the difference between ffmpeg.wasm and a custom build?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A custom build allows you to control exactly which features are included, optimize for your specific use case, and potentially achieve smaller file sizes. Pre-built ffmpeg.wasm offers convenience but may include features you don't need.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/linux.how2shout.com\/how-to-build-ffmpeg-webassembly-on-ubuntu-24-04-linux\/#faq-question-1752740570209","position":4,"url":"https:\/\/linux.how2shout.com\/how-to-build-ffmpeg-webassembly-on-ubuntu-24-04-linux\/#faq-question-1752740570209","name":"Is it safe to use FFmpeg WASM in production?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"FFmpeg WebAssembly can be used in production, but consider factors like file size, loading time, and browser compatibility. 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