MP3 is a lossy compressed audio format designed to reduce file size while keeping acceptable listening quality. It is one of the most widely supported audio formats across phones, desktops, media players, and web services.

WAV is a common audio container format used in recording and production workflows. It is often larger than compressed formats like MP3 because it can store higherfidelity or uncompressed audio data.

WebM is an open media container built for web delivery and browser playback. It is commonly used for lightweight web video distribution and embedded playback scenarios.

MKV is an open multimedia container known for supporting multiple tracks in one file. It is popular in editing, archiving, and distribution workflows that need flexible track handling.

M4A is an audiofocused container in the MPEG4 family. It is frequently used for music and voice audio where efficient file size and broad compatibility are needed.

M4V is similar to MP4 and is commonly associated with Apple distribution and playback contexts. Compatibility depends on the codecs and DRM characteristics inside the file.

AVI is an older multimedia container format introduced by Microsoft. It remains common in legacy archives, but modern workflows often convert AVI to newer containers for better compatibility.

HEVC, also known as H.265, is a video codec standard focused on improved compression efficiency. Codec licensing and device support can vary, so compatibility depends on platform and player capabilities.

GIF is a legacy image format with support for short looping animations. It is widely used for lightweight animated visuals and memes, though it is not efficient for highquality longform video.

動画フォーマット変換

書き出しで透かしなしの動画変換を行いブラウザ内でローカル処理し長さ制限なく利用できます

動画フォーマットの正式名称と拡張子概要

Supported input formats: AVI (Audio Video Interleave), GIF (Graphics Interchange Format), HEVC (High Efficiency Video Coding), M4A (MPEG-4 Audio), M4V (MPEG-4 Video), MKV (Matroska Video), MOV (Apple QuickTime Movie), MP3 (MPEG-1 Audio Layer III), MP4 (MPEG-4 Part 14), MPEG (Moving Picture Experts Group video stream), WAV (Waveform Audio File Format), WebM (Web Media). Explore tools.

Supported output formats: AVI (Audio Video Interleave), HEVC (High Efficiency Video Coding), M4A (MPEG-4 Audio), M4V (MPEG-4 Video), MKV (Matroska Video), MOV (Apple QuickTime Movie), MP3 (MPEG-1 Audio Layer III), MP4 (MPEG-4 Part 14), MPEG (Moving Picture Experts Group video stream), WAV (Waveform Audio File Format), WebM (Web Media). View pricing.