FFMPEG.EXE ×

Video Converter

1. Job H.265 → H.264 (MP4)

Quality

Speed

Also convert audio to PCM (outputs .mov for DaVinci Resolve)

Replace AAC audio with PCM (MOV)

Video is copied untouched, so this is fast. For DaVinci Resolve on Linux, which can't decode AAC.

Bit depth

2. Files

Drop video files here, or click to browse.

Ready.

Log

About

This is ffmpeg compiled to WebAssembly (ffmpeg.wasm), running in your browser. Nothing is uploaded. The first conversion downloads the ffmpeg core (about 32 MB), which your browser then caches.

H.265 → H.264 (MP4): re-encodes HEVC video with x264 for players and editors that can't decode HEVC. Audio is copied as-is, or converted to PCM if you tick the box.
AAC → PCM (MOV): leaves the video stream untouched and converts the audio to uncompressed PCM. DaVinci Resolve on Linux can't decode AAC, so clips from phones and cameras import with silent audio; this fixes that in seconds.

Limits: browser ffmpeg runs on a single CPU core, so H.264 re-encoding is much slower than native ffmpeg. Very large files (over roughly 2 GB of output) can exceed browser memory.