Stop guessing which encode is better.
Compare encodes side by side with perfectly synchronized playback, frame-accurate zoom, and live quality metrics. Tune AV1, HEVC and x264/x265 — objectively.
A real comparison, start to finish.
Watch EncCompare drive several encodes through one synced timeline — zooming into artifacts and reading live metrics.
Comparing encodes in VLC or MPC-HC is guesswork.
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Videos drift out of sync
You lose the exact frame you were comparing. -
You forget which one looked better
No side-by-side memory, just tabs and windows. -
Endless jumping back and forth
Hunting for the difference instead of seeing it. -
You end up judging still images
Motion is where codecs actually fall apart.
Built specifically to solve this.
Every clip stays locked together — play, pause, seek and step frame-by-frame across all of them at once. Zoom into artifacts, blink between two encodes, and read live PSNR/SSIM against the source. Reach a real conclusion in minutes, not an hour of window-switching.
Inspect quality the way encoders actually differ.
Purpose-built for encoder evaluation — not a media player with two windows open.
Synchronized playback
Every video stays locked together while playing, pausing and seeking. Nothing drifts.
Instant A/B comparison
Switch between encodes instantly without losing your place in the timeline.
Side-by-side viewing
A live 2×2 grid — source plus three encodes at once. No more opening several players.
Zoom into the details
Inspect compression artifacts, ringing, blocking, colour shifts and fine texture at high magnification — synchronized across every panel so you're always looking at the same pixels.
Frame-accurate navigation
Step frame by frame to inspect exactly where encoders differ. Timeline cache markers keep it fast.
Every way to see the difference.
The same synced grid, seen through the mode that reveals what you're chasing — from a plain look to a per-pixel error heatmap.
Pixel-peep every pane at once
Magnify up to ×4 (or more) with all panes locked to the same region — blocking, ringing and lost texture jump straight out.
Show only what actually changed
Subtract each encode from the source. A near-black pane means near-lossless; bright specks are exactly where an encoder gave up detail.
Map error to colour intensity
Turn the difference into a heatmap to spot concentrated quality loss — foliage, motion edges, fine gradients — at a glance.
Wipe two finalists head-to-head
Split any two panes with a draggable divider — or blink and fade between them — beside a live A/B table of bitrate, resolution and metrics.
From source file to decision in minutes.
Open your source
Drop a source file into EncCompare — ProRes, MOV, MP4, whatever you're working with.
Set up encodes
Configure several encodings live — NVENC, SVT-AV1, x264/x265 or your own ffmpeg args. No pre-rendering.
Play them together
Run all encodes simultaneously in a synced grid and zoom into the areas that matter.
Read the metrics
Live PSNR and SSIM against the source tell you what your eyes suspect — objectively.
A/B the finalists
Blink, wipe or fade the two best encodes against each other, or drop in an external file.
Decide with confidence
Pick the encode that actually looks best at the bitrate you can afford — and ship it.
Free to compare. Go Pro to sweep, score & share.
One licence, activated with a key and yours to move between machines — with a 14-day offline grace window so it keeps working on the road.
Everything you need to compare encodes side by side.
- Live 2×2 grid — source + 3 encodes, no pre-encoding
- Synchronized scrub, zoom & pan
- Every codec: NVENC, SVT-AV1, x264/x265, custom ffmpeg
- Live PSNR & SSIM vs the source
- Comparison sidebar, cache markers & cross-session cache
Everything in Free, plus the tools to sweep, score and share.
- A/B overlay — blink, wipe & fade any two encodes, or drop in an external file
- Rate-distortion sweep — run a full CRF/bitrate range, plot quality-vs-bitrate
- VMAF scoring — industry-standard perceptual scores on top of PSNR/SSIM
- Export — burn the 2×2 to PNG, or dump every metric to CSV
- Move your licence between machines · 14-day offline grace
Questions, answered.
Does it work with AV1?
Can I compare different codecs?
Is it a subscription?
Who is it for?
What does it run on?
Stop guessing.
See the difference.
Free to compare — go Pro to sweep, score and share.