Convert WEBM to MP4 Online Free

Convert WebM videos to MP4 online. Free, fast, and no signup required.

Or drop files here. Max file size 1GB.

Choose a file before converting.

Format de intrare

WEBM

WebM is a web video container commonly used for browser playback, screen recordings, and lightweight online video. It often stores VP8, VP9, AV1, Vorbis, or Opus streams.

Format de ieșire

MP4

MP4 is the most widely supported video container for phones, browsers, smart TVs, editing apps, messaging tools, and social media uploads.

How to convert WEBM to MP4

Use this WEBM to MP4 converter when a WebM file will not upload, import, or play in the app you need. The converter creates an MP4 output that is easier to share across iPhone, Android, Windows, macOS, TVs, video editors, and social platforms.

  1. 1 Upload your WEBM video file.
  2. 2 Choose MP4 as the output format if it is not already selected.
  3. 3 Click Convert to start the WEBM to MP4 conversion.
  4. 4 Download the converted MP4 file when processing is complete.

You can also adjust video settings such as resolution, codec, bitrate, and quality before starting the conversion.

WEBM to MP4 FAQ

Why convert WEBM to MP4?

WEBM works well in modern browsers, but MP4 is accepted by more phones, TVs, apps, editing tools, and social platforms. Converting WEBM to MP4 makes the video easier to play, share, and edit.

Is this WEBM to MP4 converter free?

Yes. Convertr lets you convert WEBM videos to MP4 online for free with no registration, no software install, and no watermark.

Will converting WEBM to MP4 improve compatibility?

Yes. MP4 with H264 video and AAC audio is one of the most widely supported video combinations, so it is usually the best output format for playback and sharing.

Are my uploaded WEBM files secure?

Your files are transferred securely, processed for conversion, and automatically deleted after the conversion flow.

Related video converters

Need another MP4 workflow? Try these common video conversions.

Compresor video Decupare video Convertor video Convertor MP4 MOV to MP4 AVI la MP4 MKV în MP4 MP4 la WEBM Convertirea în MP4 H265 până la H264 VP9 la H264 AV1 până la H264 AV1 / AV01 la MP4 H264 până la H265 HEVC to MP4 VP9 la MP4

What happens when WEBM becomes MP4

Format sursă

WEBM is a web-focused container commonly carrying VP8, VP9, or AV1 video with Opus or Vorbis audio.

Formatul țintă

MP4 is a widely supported media container, commonly carrying H.264 or H.265 video and AAC audio.

Ce schimbări

The WEBM container is read and the selected video and audio streams are written into a MP4 container.

Codecs may be transcoded even when the visible resolution and duration stay the same.

Ce este păstrat
Duration, frame order, and visible dimensions are preserved unless you select trimming, frame-rate, or resolution changes.
What may be lost
Extra subtitle, attachment, chapter, or alternate audio tracks may be omitted when the target container or selected settings do not support them.
Codec and quality implications
Container names do not guarantee a codec. Quality and compatibility depend on the selected video codec, audio codec, bitrate, frame rate, and resolution.
Realistic limitations
A valid WEBM extension does not guarantee that every codec inside the container is decodable. Corrupt, encrypted, or unusual streams can fail.

Etapele de conversie

  1. Upload a WEBM file no larger than 1 GB.
  2. Confirm that MP4 is selected as the target.
  3. Open settings only if you need to change codec, quality, bitrate, frame rate, resolution, or audio behavior.
  4. Start the conversion. A healthy compatible worker begins processing immediately.
  5. Download the MP4 file and check the result before deleting your source.

rezolvarea problemelor

The WEBM file is rejected or will not open.
Confirm that the file is not empty, password-protected, or corrupt and that its real format matches the extension.
The MP4 file is larger than expected.
Choose a more efficient codec or lower quality setting when available. Lossless and uncompressed targets are often larger by design.
The result has no sound or will not play.
Try a broadly supported target codec and verify that the source contains a decodable audio stream.

Confidențialitate și păstrarea fișierelor

Uploads and converted files are processed automatically and irreversibly deleted within 24 hours. You can delete them sooner with the delete control. Convertr does not read, mine, sell, or manually review file contents.

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Alternative utile

WEBM to AAC Use this when AAC better matches the app, codec, or editing workflow you need. WEBM to AIFF Use this when AIFF better matches the app, codec, or editing workflow you need. MP4 to WEBM Use the reverse conversion when you need to return to the original format family.