MP4 to FLC - Online Video Converter

Convert MP4 to FLC online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.

Convert MP4 to FLC

[+] Drop MP4 video here or click to select MP4

Output format

FLC (H.264 / AAC)

No transcoding (remux only)[i]

Mode[i]

Simple Advanced

Quality[i]

Resolution[i]

About MP4 to FLC

Convert MP4 to FLC. MP4 pairs H.264 video with AAC audio in the ISO base media container. FLC extends the Animator flipbook with larger frames and deltas. Frame deltas can glitch on corrupt frames; verify playback..

Why convert MP4 to FLC?

Larger files than lossy shares with FLC lossless quality.
Keep animation and transparency where supported.
Private, no upload - runs in your browser.

MP4 vs FLC

Animation	Yes	Yes
Transparency	No	No
Compression	lossy	lossless
Typical use	MP4 pairs H.264 video with AAC audio in the ISO base media container.	FLC extends the Animator flipbook with larger frames and deltas.

When not to convert MP4 to FLC

Skip FLC for the smallest share: lossless output stays large, so prefer a lossy target when sending MP4 files.
Keep a master copy: repeated exports stack small losses, so archive MP4 before batch FLC shares.

Limits

Starting point: MP4 - H.264 video with AAC audio in one file. H.264 has no alpha channel, so transparency is dropped. Frame deltas can glitch on corrupt frames; verify playback. Encode FLC (H.264 / AAC) from MP4 at a bitrate near the source, and confirm the audio track before converting.

How conversion works

Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.

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FAQ

How do I convert MP4 to FLC?

Drop your MP4 file onto this page, choose quality and codec settings, then click Convert. The result downloads as FLC instantly. All processing runs in your browser.

What codec is used for FLC?

The default codec for FLC is H.264 / AAC. You can change the video and audio codec in Advanced mode.

How do you store my files?

We do not store any processed videos. All conversion happens entirely in your browser using FFmpeg WASM.