{"id":703,"date":"2025-05-30T15:08:44","date_gmt":"2025-05-30T06:08:44","guid":{"rendered":"https:\/\/alive-project.com\/en\/streamer-magazine\/?p=703"},"modified":"2025-10-21T11:01:30","modified_gmt":"2025-10-21T02:01:30","slug":"4592","status":"publish","type":"post","link":"https:\/\/alive-project.com\/en\/streamer-magazine\/article\/4592\/","title":{"rendered":"Eliminate OBS Block Noise: Achieve High-Quality Streaming and Recording"},"content":{"rendered":"\n<p>When block noise occurs, the screen becomes coarse, ruining the beautiful video. If viewers say &#8220;The quality is poor&#8221; or &#8220;It&#8217;s hard to watch and laggy,&#8221; motivation might decrease.<\/p>\n\n\n\n<p>However, block noise can be prevented by optimizing the settings of OBS.<\/p>\n\n\n\n<p>This article thoroughly explains the causes and solutions for block noise in OBS. From bitrate differences to encoder variations and the impact of the internet connection, everything will be clearly explained.<\/p>\n\n\n\n<p>If you&#8217;re struggling with block noise in OBS, let&#8217;s review your settings immediately to achieve high-quality video.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is block noise in OBS?<\/h2>\n\n\n\n<p>Block noise refers to issues like the image becoming &#8220;distorted,&#8221; &#8220;blurry,&#8221; &#8220;poor,&#8221; or &#8220;coarse.&#8221;<\/p>\n\n\n\n<p>In OBS, instead of recording or transmitting video data as is, it outputs the video while encoding (compressing) it.<\/p>\n\n\n\n<p>Since the video data is too large as is, the bitrate is adjusted to reduce the data size. However, in the compression process, minute details of the video are trimmed, leading to the occurrence of block noise.<\/p>\n\n\n\n<p>In scenes like the following, block noise becomes particularly noticeable.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Videos with intense movements (such as FPS or sports games)<\/li>\n\n\n\n<li>Dark scenes or videos with many gradients (nightscapes or scenes with lots of shadows)<\/li>\n\n\n\n<li>Situations where encoding cannot keep up (low-spec PCs or inappropriate settings)<\/li>\n<\/ul>\n\n\n\n<p>To prevent poor image quality, it&#8217;s necessary to adjust OBS&#8217;s encoding settings, tweak the bitrate, and review the connection environment.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Causes and solutions for block noise occurrence in OBS<\/h2>\n\n\n\n<p>To aim for removal or reduction of block noise in OBS, understanding its main causes is crucial.<\/p>\n\n\n\n<p>Broadly, the possible causes can be divided into the following three:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bitrate<\/li>\n\n\n\n<li>Encoder<\/li>\n\n\n\n<li>Network speed<\/li>\n<\/ul>\n\n\n\n<p>When the bitrate is inappropriate or when encoding can&#8217;t keep up, parts of the video are trimmed and appear as noise. From here, each cause and its solution will be explained.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Bitrate is not optimal<\/h3>\n\n\n\n<p>Bitrate refers to the amount of data that can be transmitted per second. Too low, and the video is overly compressed, making noise more likely, and too high, there&#8217;s a possibility that it might be forcibly recompressed by the platform, leading to degraded quality.<\/p>\n\n\n\n<p>For example, block noise on platforms like YouTube or Twitch originates from the re-encoding process on their sides.<\/p>\n\n\n\n<p>Even if you aim for high quality by excessively increasing the bitrate, it might get caught in limitations and be recompressed, meaning quality doesn&#8217;t improve.<\/p>\n\n\n\n<p>Conversely, if streaming continues below the recommended bitrate benchmark, the video will likely become riddled with noise.<\/p>\n\n\n\n<p>Below is a summary of recommended bitrate settings according to resolution.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Resolution<\/th><th>FPS<\/th><th>Recommended Bitrate (Twitch)<\/th><th>Recommended Bitrate (YouTube)<\/th><\/tr><\/thead><tbody><tr><td>720p<\/td><td>30<\/td><td>2,500\u20134,000kbps<\/td><td>1,500\u20134,000kbps<\/td><\/tr><tr><td>720p<\/td><td>60<\/td><td>3,500\u20135,000kbps<\/td><td>2,250\u20136,000kbps<\/td><\/tr><tr><td>1,080p<\/td><td>30<\/td><td>4,500\u20136,000kbps<\/td><td>3,000\u20136,000kbps<\/td><\/tr><tr><td>1,080p<\/td><td>60<\/td><td>6,000\u20139,000kbps<\/td><td>4,500\u20139,000kbps<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>While being aware of platform-specific upper limits and recommendations such as those for Twitch and YouTube, also consider your own connection speed in your settings.<\/p>\n\n\n\n<p>The method to set bitrate in OBS is explained in detail in the following article.<\/p>\n\n\n\n<p>&gt;&gt;<a href=\"https:\/\/alive-project.com\/en\/streamer-magazine\/article\/2440\/\">Optimal OBS Bitrate Settings for Streaming and Recording Explained<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Encoding cannot keep up<\/h3>\n\n\n\n<p>An encoder is a system that compresses video to reduce the data size.<\/p>\n\n\n\n<p>In OBS, mainly two types of encoders can be used.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Encoder<\/th><th>Features<\/th><\/tr><\/thead><tbody><tr><td>x264 (Software Encoding)<\/td><td>Encodes using CPU. High quality but high CPU load.<\/td><\/tr><tr><td>NVENC (NVIDIA GPU Encoding)<\/td><td>Encodes using NVIDIA GPU. Low load and stable, but inferior quality with older GPUs.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>OBS performs encoding in real-time while executing streaming and recording. If encoding cannot keep up, parts of the video may be missing, causing block noise.<\/p>\n\n\n\n<p>If the settings don&#8217;t match the machine specs, encoding delays can lead to corrupted video.<\/p>\n\n\n\n<p>How to change encoders in OBS is explained in detail in the following article.<\/p>\n\n\n\n<p>&gt;&gt;<a href=\"https:\/\/alive-project.com\/en\/streamer-magazine\/article\/2044\/\">OBS Encoder Settings Guide: Optimize Streaming and Recording Quality<\/a><\/p>\n\n\n\n<p>This section explains causes and remedies for block noise depending on the encoder type.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">x264 (Software Encoding)<\/h4>\n\n\n\n<p>x264 uses software encoding via the CPU, allowing fine-quality adjustments but tending to increase CPU load.<\/p>\n\n\n\n<p>Encoding requires significant computation, so if the CPU is heavily used by other apps (like games) during streaming, encoding can\u2019t keep up, leading to block noise.<\/p>\n\n\n\n<p>If you set the preset (processing speed) to &#8220;slow,&#8221; high-quality video can be theoretically achieved, but CPU load might soar, leading to potential real-time encoding delays.<\/p>\n\n\n\n<p>Conversely, setting to &#8220;veryfast&#8221; or &#8220;superfast&#8221; reduces load but compromises quality.<\/p>\n\n\n\n<p>By making adjustments like the ones below, it\u2019s possible to harness x264&#8217;s strengths while reducing block noise:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Continuously check CPU usage, and if the load is too high, lower presets, bitrate, or resolution<\/li>\n\n\n\n<li>On high-performance machines with CPU room, try slightly heavier presets<\/li>\n\n\n\n<li>Minimize simultaneous use with other apps to allocate resources to OBS encoding<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">NVENC (NVIDIA GPU Encoding)<\/h4>\n\n\n\n<p>NVENC is an encoding method using dedicated hardware in NVIDIA&#8217;s GPU.<\/p>\n\n\n\n<p>Reducing CPU load is a notable advantage, but depending on the GPU generation or settings used, block noise might feel noticeable as &#8220;poor quality.&#8221;<\/p>\n\n\n\n<p>The older GTX series NVENC exhibits slightly inferior quality, with noise more prominent in fast-moving scenes.<\/p>\n\n\n\n<p>On the other hand, new-generation NVENC, used from the RTX series, improves encoding quality, and by choosing &#8220;New NVENC&#8221; on the OBS side, stable quality is easier to achieve.<\/p>\n\n\n\n<p>Here are three effective measures:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Utilize new-generation NVENC post-RTX as much as possible<\/li>\n\n\n\n<li>Turn on &#8220;Psycho Visual Tuning&#8221; and secure an optimal bitrate<\/li>\n\n\n\n<li>Lower game graphics settings moderately for GPU resource flexibility<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Low network speed<\/h3>\n\n\n\n<p>In streaming, not just a PC&#8217;s processing power but also the upload network speed is crucial.<\/p>\n\n\n\n<p>If network speed is inadequate, streaming video data in real-time is difficult, leading ultimately to frequent block noise or image distortions.<\/p>\n\n\n\n<p>Moreover, on unstable connections, packet loss can easily occur, causing parts of the video to be missing, serving as a further cause of noise.<\/p>\n\n\n\n<p>The following table summarizes the estimated upload speeds by resolution and FPS, so check your network specs by them.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Resolution<\/th><th>FPS<\/th><th>Recommended Upload Speed<\/th><\/tr><\/thead><tbody><tr><td>720p<\/td><td>30<\/td><td>3Mbps or more<\/td><\/tr><tr><td>720p<\/td><td>60<\/td><td>4.5Mbps or more<\/td><\/tr><tr><td>1,080p<\/td><td>30<\/td><td>6Mbps or more<\/td><\/tr><tr><td>1,080p<\/td><td>60<\/td><td>8Mbps or more<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>If you have concerns about network speed, consider setting the bitrate modestly or switching from Wi-Fi to a wired connection to reduce block noise.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Differences in block noise from OBS settings [Comparing actual videos]<\/h2>\n\n\n\n<p>Even with the same video source, block noise appearance can dramatically change depending on how you choose your OBS settings, bitrate, and encoder.<\/p>\n\n\n\n<p>From here, let&#8217;s see comparison examples of how bitrate quality differences and encoder choices affect video.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Image quality comparison by bitrate<\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/streamer-magazine.lolipop.io\/wp-content\/uploads\/2025\/02\/obs-block-noise_01.jpg\" alt=\"\u30d3\u30c3\u30c8\u30ec\u30fc\u30c8\u5225\u306e\u753b\u8cea\u6bd4\u8f03\" class=\"wp-image-4593\"\/><\/figure>\n\n\n\n<p>If the bitrate is too low, the video becomes overly compressed, making block noise noticeable during scenes with motion.<\/p>\n\n\n\n<p>Conversely, securing a good bitrate allows for less noise, even during intense motion, maintaining smooth video.<\/p>\n\n\n\n<p>The table below compares how the quality changes when only the bitrate is changed for the same video.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Bitrate<\/th><th>Features<\/th><th>Quality Evaluation<\/th><\/tr><\/thead><tbody><tr><td>2,000kbps<\/td><td>Low bitrate. Block noise is noticeable during intense motion<\/td><td>\u2605\u2606\u2606\u2606\u2606<\/td><\/tr><tr><td>4,500kbps<\/td><td>Standard quality, with slight blurring of details<\/td><td>\u2605\u2605\u2606\u2606\u2606<\/td><\/tr><tr><td>6,000kbps<\/td><td>Twitch recommended ceiling. Relatively clear even with intense games<\/td><td>\u2605\u2605\u2605\u2605\u2606<\/td><\/tr><tr><td>9,000kbps<\/td><td>YouTube for high quality. Nearly no noise<\/td><td>\u2605\u2605\u2605\u2605\u2605<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Quality comparison by encoder<\/h3>\n\n\n\n<p>OBS mainly has two types, x264 (CPU encoding) and NVENC (GPU encoding), and with the same bitrate, there&#8217;s a difference in the finished video.<\/p>\n\n\n\n<p>For example, x264&#8217;s &#8220;veryfast&#8221; keeps CPU load low, but block noise is noticeable due to fast processing.<\/p>\n\n\n\n<p>However, if set to &#8220;medium&#8221; or &#8220;slow,&#8221; image quality improves, but sudden CPU load rise can occur, making encoding unable to keep up.<\/p>\n\n\n\n<p>The table below compares their characteristics and quality differences.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Encoder<\/th><th>Features<\/th><th>Quality Evaluation<\/th><\/tr><\/thead><tbody><tr><td>x264 (medium)<\/td><td>Improved quality, but higher CPU load<\/td><td>\u2605\u2605\u2605\u2605\u2605<\/td><\/tr><tr><td>x264 (veryfast)<\/td><td>Low CPU load, but detail loss is likely<\/td><td>\u2605\u2605\u2605\u2605\u2606<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">[Block noise countermeasures] Introducing optimal OBS settings for different streaming environments<\/h2>\n\n\n\n<p>To suppress block noise and deliver comfortable video to viewers, it is essential to set OBS tailored to PC specs, network status, and streaming platforms.<\/p>\n\n\n\n<p>Next, recommended settings by skill level, categorized into beginners, intermediates, and advanced users are presented. Check which settings suit your environment for smooth streaming.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Beginner level | Simple and stable settings<\/h3>\n\n\n\n<p>Beginners unfamiliar with OBS operations should start with &#8220;720p, 30fps,&#8221; as it tends to be more stable.<\/p>\n\n\n\n<p>\u25bcRecommended settings for beginners<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Setting Item<\/th><th>Recommended Setting<\/th><\/tr><\/thead><tbody><tr><td>Encoder<\/td><td>NVENC (NVIDIA GPU-equipped PCs) or x264 (CPU)<\/td><\/tr><tr><td>Resolution<\/td><td>720p (Base resolution: 1,280\u00d7720)<\/td><\/tr><tr><td>FPS<\/td><td>30fps (sufficient for less dynamic streaming)<\/td><\/tr><tr><td>Bitrate<\/td><td>3,500\u20134,500kbps<\/td><\/tr><tr><td>Scaling Filter<\/td><td>Bilinear or Lanczos<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u25bcSetting points<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>By keeping the bitrate low, it becomes stable even with slower network speeds<\/li>\n\n\n\n<li>If using x264 (CPU encoding), select the &#8220;veryfast&#8221; preset (to reduce CPU load)<\/li>\n\n\n\n<li>If NVENC is usable, high-quality streaming is possible while reducing GPU load<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Intermediate level | Balancing quality and stability<\/h3>\n\n\n\n<p>If there&#8217;s room for PC performance and network speed, set the resolution to 1,080p and FPS to 60fps for smooth and clear video.<\/p>\n\n\n\n<p>\u25bcRecommended settings for intermediates<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Setting Item<\/th><th>Recommended Setting<\/th><\/tr><\/thead><tbody><tr><td>Encoder<\/td><td>NVENC (Recommended: RTX series)<\/td><\/tr><tr><td>Resolution<\/td><td>1,080p (Base resolution: 1,920\u00d71,080)<\/td><\/tr><tr><td>FPS<\/td><td>60fps (for games with lots of movement)<\/td><\/tr><tr><td>Bitrate<\/td><td>6,000kbps (Twitch max) or 9,000kbps (YouTube recommended)<\/td><\/tr><tr><td>Keyframe Interval<\/td><td>2 seconds (Platform recommended value)<\/td><\/tr><tr><td>Preset (x264)<\/td><td>&#8220;fast&#8221; or &#8220;medium&#8221; (maintains high quality)<\/td><\/tr><tr><td>Scaling Filter<\/td><td>Lanczos<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Advanced level | Balancing high quality and high performance<\/h3>\n\n\n\n<p>With a high-performance PC, you can fully utilize OBS settings for maximum quality streaming.<\/p>\n\n\n\n<p>\u25bcRecommended settings for advanced users<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Setting Item<\/th><th>Recommended Setting<\/th><\/tr><\/thead><tbody><tr><td>Encoder<\/td><td>NVENC (latest) or x264 (slow)<\/td><\/tr><tr><td>Resolution<\/td><td>1,440p (Base resolution: 2,560\u00d71,440)<\/td><\/tr><tr><td>FPS<\/td><td>60fps (for games with lots of movement)<\/td><\/tr><tr><td>Bitrate<\/td><td>12,000\u201315,000kbps (YouTube recommended)<\/td><\/tr><tr><td>Keyframe Interval<\/td><td>2 seconds (Platform recommended value)<\/td><\/tr><tr><td>Preset (x264)<\/td><td>&#8220;slow&#8221; or &#8220;medium&#8221; (ultra-high quality)<\/td><\/tr><tr><td>Scaling Filter<\/td><td>Lanczos<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">AI-enabled automatic improvement method for OBS block noise<\/h2>\n\n\n\n<p>Recently, integrating NVIDIA AI technology into OBS has progressed, with a notable example being the &#8220;OBS RTX SuperResolution&#8221; plugin.<\/p>\n\n\n\n<p>Utilizing AI functions embedded in the GPU, it is equipped with a mechanism to significantly reduce block noise and compression artifacts in real-time.<\/p>\n\n\n\n<p>Even with low bitrate or low-resolution sources, the AI estimates and supplements video details, making it easier to maintain clear and smooth video compared to regular scaling processes.<\/p>\n\n\n\n<p>\u25bcOBS RTX SuperResolution setup method<\/p>\n\n\n\n<p>1. Download &#8220;OBS RTX SuperResolution&#8221; from the <a href=\"https:\/\/obsproject.com\/forum\/resources\/obs-rtx-superresolution.1890\/\" target=\"_blank\" rel=\"noreferrer noopener\">OBS plugin page<\/a><br>2. Open OBS, then select &#8220;Filter&#8221; menu<br>\u3000\u21d2Select the video source to reduce noise (such as game screens or camera videos)<br>3. Add the &#8220;RTX SuperResolution&#8221; filter and adjust parameters<br>\u3000\u30fbUpscale Level: Choose how much to adjust resolution (e.g., 720p\u21d21,080p)<br>\u3000\u30fbNoise Reduction Intensity: Set the strength of noise reduction (be cautious as an excess can blur details)<\/p>\n\n\n\n<p>AI processing requires certain GPU resources. Be mindful that using it simultaneously with high-load tasks like gaming may result in frame rate drops or processing lag.<\/p>\n\n\n\n<p>This time, we&#8217;ve explained the causes and solutions for block noise occurring in OBS. By optimizing bitrates, encoders, and network speeds, you can achieve clear and smooth video.<br>Key points to reduce block noise are as follows:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Solution Item<\/th><th>Improvement Method<\/th><\/tr><\/thead><tbody><tr><td>Bitrate Setting<\/td><td>Set based on platform recommendations (e.g., for Twitch it&#8217;s a max of 6,000kbps)<\/td><\/tr><tr><td>Encoder Selection<\/td><td>If you want to minimize CPU load, choose NVENC; for quality, prioritize x264 (medium or higher)<\/td><\/tr><tr><td>Securing Network Speed<\/td><td>At least 8Mbps upload speed for 1,080p\/60fps<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>When block noise occurs, the screen becomes coarse, ruining the beautiful video. If viewers say &#8220;The qua&#8230;<\/p>\n","protected":false},"author":2,"featured_media":750,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-703","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-howto"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Eliminate OBS Block Noise: Achieve High-Quality Streaming and Recording | Streamer Magazine<\/title>\n<meta name=\"description\" content=\"Learn how to eliminate block noise in OBS with our detailed guide on optimal settings, bitrate adjustments, and encoder choices for high-quality streaming.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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