What is the difference between lossless and re-encode?

Lossless flips the rotation metadata flag — the encoded video bytes are unchanged, the player just reads the new orientation. It is instant. Re-encode actually rotates the pixels and re-compresses the video, which is slower but works on every player including ones that ignore metadata.

Why does my video look rotated on my phone but not on my computer?

Phone-shot videos store orientation as metadata, not in the pixels. Some players read it (most phones, modern browsers), some don't (older desktop apps, some web players). The re-encode mode bakes the rotation into the pixels so it works everywhere.

Free Rotate Video Online — No Upload Required

Q: Does the video get uploaded?

No. Morph rotates the video locally in your browser using FFmpeg.wasm. The file never leaves your device, including ours.

Q: Will rotation lose quality?

Lossless mode loses zero quality — same bytes, different flag. Re-encode mode goes through one round of compression at high quality (CRF 18 default), which is visually indistinguishable from the source for most content.

Q: What formats are supported?

MP4, MOV, WebM, AVI, MKV all work. The output keeps the same container as the input by default.

Q: Can I rotate by an arbitrary angle?

Not currently. The rotation tool supports 90, 180, 270 and horizontal/vertical flip — the angles where pixels map cleanly. Arbitrary rotation introduces interpolation artifacts and is rarely what people actually want.

What it actually does

02

ANGLES

Five clean rotations

90 clockwise, 90 counter-clockwise, 180, flip horizontal, flip vertical. The angles where pixels map cleanly without interpolation artifacts.

03

PREVIEW

Instant rotate

Preview updates the moment you pick. No upload step.

04

FORMATS

MP4, MOV, WebM, AVI, MKV

Output keeps the same container as input by default.

How it works

Open morph.cool/video-editor in any modern browser.
Drag your video onto the timeline. Full clip loads locally.
Pick rotation: 90 CW, 90 CCW, 180, flip horizontal, flip vertical. Preview updates instantly.
Pick mode: lossless metadata flag (instant) or full re-encode at CRF 18 (slower, universal).
Export. The rotated file lands on your machine. Same codec, same bitrate, same audio.

Why "rotate video" online tools always feel slow

Because they always re-encode. Even when a metadata-flag flip would do the job in zero seconds, online rotators upload your file, send it to a render queue, re-encode the entire video at low quality to control bandwidth, and watermark the result for free users. Lossless rotation has been an FFmpeg one-liner since 2007 — but it's not a one-liner that fits a SaaS billing model. Flowcut runs FFmpeg in your browser tab and exposes both modes. Lossless when the player supports orientation flags (most modern ones do). Re-encode when you need the rotation baked into pixels for a player that ignores metadata. Either way, the file never leaves your tab.

Frequently asked

Does the video get uploaded?

No. Morph rotates locally via FFmpeg.wasm. The file never leaves your device, including ours.

What's the difference between lossless and re-encode?

Lossless flips the rotation metadata flag — bytes unchanged, instant, zero quality loss. Re-encode bakes the rotation into pixels — slower but works on every player.

Why does my video look rotated on phone but not desktop?

Phone videos store orientation as metadata. Modern players read it. Older desktop apps ignore it. Use re-encode mode to bake the rotation in.

Will rotation lose quality?

Lossless mode loses zero quality. Re-encode at CRF 18 is visually indistinguishable from source for most content.

What formats are supported?

MP4, MOV, WebM, AVI, MKV. Output keeps the same container by default.

Can I rotate by an arbitrary angle?

Not currently. 90, 180, 270, and flips — the angles where pixels map cleanly. Arbitrary angles introduce interpolation artifacts and are rarely what people actually want.

While you're here Open Flowcut Free Video Editor Online Video Trimmer Video Compressor Video Speed Changer Morph Pro

Free Rotate Video Online Sideways video. Right-side up.

Lossless metadata flip or full pixel re-encode — your call.