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Resize WebM: A Comprehensive Guide to Editing Video Files

Cliff Weitzman

Cliff Weitzman

CEO e fundador da Speechify

Gerador de voz com IA nº 1.
Crie narrações com qualidade humana
em tempo real.

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The world of digital media can seem complex with multiple video formats like WebM, MP4, AVI, MOV, and more. Understanding these formats and how to manipulate them can greatly enhance your video editing and viewing experiences. This comprehensive tutorial will guide you through the WebM format, how it compares to MP4, and how to resize it without losing quality.

What is a WebM File?

WebM is an open-source, royalty-free media file format designed for the web. The file format was first released in 2010 by Google, aimed at providing high-quality, compressed video content for use on the internet. The standard file extension for WebM is .webm. It uses VP8 or VP9 video codecs and Vorbis or Opus for audio. It is supported by various web browsers like Google Chrome, Firefox, and Opera.

Is WebM Higher Quality than MP4?

When it comes to video quality, both WebM and MP4 can deliver excellent results, especially with high-definition content. However, WebM generally provides comparable quality to MP4 but at a smaller file size, making it more efficient for online video streaming. Still, MP4's compatibility is more widespread, making it a popular choice for video playback on various platforms, including Android and iOS devices.

What is the Difference Between WebM and MP4?

As mentioned above, the primary difference lies in the codecs they use and their compatibility. MP4 uses H.264 (also known as MPEG-4 AVC) for video encoding, and AAC for audio, while WebM uses VP8 or VP9 for video, and Vorbis or Opus for audio. Although both formats can deliver high-quality video, WebM files are often smaller than MP4 files of similar quality, making them more suitable for web use.

Why are WebM Files Larger or Smaller Than MP4 Files?

WebM files can sometimes be larger than MP4s when they are encoded with the same bitrate and resolution. This is because WebM uses different codecs for compression. However, when properly optimized, WebM files tend to be smaller and more efficient, making them ideal for online use.

How Do I Convert WebM to MP4?

There are numerous video converter software options that you can use to convert WebM to MP4. You can also use FFmpeg, an open-source tool, which provides command-line-based conversion. FFmpeg is widely used because of its powerful features and compatibility with numerous video formats.

How Do I Make a Video Frame Smaller and Resize a Video Aspect Ratio?

Video frame size and aspect ratio can be adjusted using video editing software. Aspect ratio, the width to height ratio of a video, is important for proper video playback on various devices. A mismatched aspect ratio can result in distorted or stretched videos.

How Can I Resize a Video Without Losing Quality?

When resizing a video file, it's important to maintain the aspect ratio to prevent distortion. Video editing software often has settings that automatically maintain the original video's aspect ratio when resizing. The bitrate also plays a crucial role in maintaining video quality. Adjusting the bitrate may cause a change in the video quality, so it's necessary to balance between video size and quality.

How Do I Resize a WebM Video and Reduce the Size of a WebM?

Resizing a WebM video can be done with various video editing software or online video services. Keep in mind that maintaining the aspect ratio and bitrate during the process will help retain the video quality.

Top 8 Software for Resizing WebM Files

  1. FFmpeg: A powerful open-source tool for handling video, audio, and other multimedia files and streams.
  2. VLC Media Player: Besides being a popular media player, VLC also offers video converting and editing features.
  3. HandBrake: An open-source video transcoder, HandBrake allows users to convert and resize videos with ease.
  4. Adobe Premiere Pro: A professional video editing software, it offers extensive features for resizing and editing videos.
  5. Filmora: An easy-to-use video editor suitable for beginners and professionals.
  6. Movavi Video Converter: A robust tool for converting video formats, including WebM to MP4.
  7. Avidemux: A free video editor designed for simple cutting, filtering, and encoding tasks.
  8. Clipchamp: An online video editor that allows users to resize videos while maintaining quality.

In conclusion, understanding video formats, their differences, and how to manipulate them can greatly enhance your video editing skills. With this guide, you can comfortably resize WebM files and make the best choice between WebM and MP4 depending on your specific requirements.

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Cliff Weitzman

Cliff Weitzman

CEO e fundador da Speechify

Cliff Weitzman é um defensor da causa da dislexia e o CEO e fundador da Speechify, o aplicativo número 1 de conversão de texto em fala do mundo, com mais de 100.000 avaliações 5 estrelas e líder de downloads na App Store na categoria Notícias & Revistas. Em 2017, Weitzman foi incluído na lista Forbes 30 under 30 por seu trabalho para tornar a internet mais acessível a pessoas com dificuldades de aprendizagem. Cliff Weitzman já foi destaque em veículos como EdSurge, Inc., PC Mag, Entrepreneur, Mashable, entre outros importantes meios de comunicação.

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Sobre o Speechify

Leitor de texto para fala nº 1

Speechify é a principal plataforma mundial de texto para fala, utilizada por mais de 50 milhões de usuários e avaliada com mais de 500.000 avaliações cinco estrelas em seus apps de texto para fala para iOS, Android, extensão para Chrome, aplicativo web e aplicativo para desktop Mac. Em 2025, a Apple premiou o Speechify com o prestigioso Prêmio de Design da Apple na WWDC, chamando-o de “um recurso fundamental que ajuda as pessoas a viverem melhor”. O Speechify oferece mais de 1.000 vozes naturais em mais de 60 idiomas e é utilizado em quase 200 países. Entre as vozes de celebridades estão Snoop Dogg, Mr. Beast e Gwyneth Paltrow. Para criadores e empresas, o Speechify Studio oferece ferramentas avançadas, incluindo gerador de voz com IA, clonagem de voz com IA, dublagem com IA e seu alterador de voz com IA. O Speechify também potencializa produtos de ponta com sua API de texto para fala de alta qualidade e excelente custo-benefício. Em destaque no The Wall Street Journal, na CNBC, na Forbes, no TechCrunch e em outros grandes veículos de notícias, o Speechify é o maior provedor de texto para fala do mundo. Acesse speechify.com/news, speechify.com/blog e speechify.com/press para saber mais.