These Terms of Service ("Terms") govern access to and use of the Mirror Fractal Codec website (the "Site"), the public demo, and any commercial products or services offered by Aleksei Solonskii, trading as Mirror Fractal Lab (sole proprietor, registered at Calle Suiza 24, 46024 Valencia, Spain; VAT / NIF ESZ1518958C) ("we", "us", "our"). By accessing the Site you agree to be bound by these Terms.
1. The service
Mirror Fractal Codec ("MFC") is a lossless compression codec for neuromorphic event-camera data, distributed as a Python package on PyPI (mfc-codec), a WebAssembly demo on this Site, and — under commercial licence — as native Rust crate, CLI, shared library, and reference server.
2. Eligibility
The Site is available to anyone of legal age in their jurisdiction. Commercial licensing is offered to organisations and individuals capable of entering into binding contracts.
3. Public demo
The interactive demo runs entirely in the visitor's browser via WebAssembly. Uploaded files are processed locally and are never transmitted to our servers. Use of the demo is provided "as is" without warranty.
4. Intellectual property
MFC, including the algorithm, source code, container format and trademarks, is the proprietary property of Aleksei Solonskii / Mirror Fractal Lab. Patent pending under US application 64/034,974. The PyPI distribution is licensed under the terms shipped with the package; the Rust core, CLI, C ABI and server are available only under a separate commercial agreement.
5. Acceptable use
Do not reverse-engineer, decompile or disassemble the WASM module or any delivered binary.
Do not redistribute compiled artifacts or source outside the scope of your licence.
Do not use the Site or service to violate applicable law or third-party rights.
6. Pricing and payment
Commercial licence fees are quoted per engagement and invoiced through our payment processor, Paddle (Paddle.com Market Limited), acting as Merchant of Record. Applicable taxes are calculated and remitted by Paddle. Specific pricing, term and scope are set out in the order form or quote you sign.
7. Warranty and liability
To the maximum extent permitted by law, the Site, the public demo and any free distribution are provided "as is" without warranties of any kind. For paid commercial licences, warranty terms are stated in the executed licence agreement. In no event shall our aggregate liability exceed the fees paid by the customer in the twelve months preceding the claim.
8. Termination
We may suspend or terminate access to the Site or to commercial deliverables if these Terms or the executed licence agreement are materially breached. Provisions on intellectual property, confidentiality and liability survive termination.
9. Governing law
These Terms are governed by the laws of Spain. Any dispute arising in connection with them shall be submitted to the competent courts of Valencia, Spain, save where mandatory consumer-protection law provides otherwise.
10. Changes
We may update these Terms from time to time. The "Last updated" date above reflects the most recent revision. Continued use of the Site after a change constitutes acceptance of the updated Terms.
This notice explains what personal data Mirror Fractal Lab collects when you visit codec.mirrorfractal.com and related sub-domains, how it is used, and the rights you have under the EU General Data Protection Regulation (GDPR) and equivalent legislation.
1. Controller
Aleksei Solonskii, trading as Mirror Fractal Lab (sole proprietor, registered at Calle Suiza 24, 46024 Valencia, Spain; VAT / NIF ESZ1518958C). Contact: info@mirrorfractal.com.
2. Data we collect
Contact data — name, email and any other information you provide when you write to us (sales enquiries, evaluation requests, support).
Billing data — when you purchase a commercial licence, billing details are collected and processed by Paddle as Merchant of Record. We receive only the minimum information required to fulfil the order (name, email, country, VAT ID where applicable).
Site analytics — minimal, privacy-respecting access logs (IP address truncated, user-agent, requested path, referrer) retained for security and capacity planning. No third-party advertising or behavioural-tracking cookies are set.
The public demo runs entirely in your browser: uploaded event-camera recordings are processed locally by the WASM module and never transmitted to us.
3. Legal bases
Contract performance (Art. 6(1)(b) GDPR) — for handling enquiries, evaluations and licence delivery.
Legitimate interest (Art. 6(1)(f) GDPR) — for security logging and product improvement.
Legal obligation (Art. 6(1)(c) GDPR) — for tax, accounting and statutory record-keeping.
4. Sharing
We share personal data only with vetted processors strictly necessary to run the service: hosting (Vercel Inc.), payment processing (Paddle.com Market Limited), code-mirror hosting (GitHub Inc.). Each operates under its own privacy framework and Data Processing Agreement.
5. International transfers
Some of our processors are based in the United States. Transfers are covered by the EU-US Data Privacy Framework and / or Standard Contractual Clauses.
6. Retention
Sales enquiry data is kept for up to 24 months from the last interaction. Billing data is retained for the period required by tax law (typically 6 years). Access logs are retained for 30 days.
7. Your rights
You have the right to access, rectify, erase or port your personal data, to restrict or object to processing, and to lodge a complaint with the Spanish Data Protection Authority (AEPD). Contact info@mirrorfractal.com to exercise any of these rights.
8. Cookies
This Site does not set marketing cookies. Strictly necessary technical cookies may be used to remember your acceptance of this notice; no consent is required for those.
9. Changes
We will revise this notice if our practices change. The "Last updated" date above always reflects the current version.
03 / Refund Policy
Refund Policy
Last updated: 21 May 2026
Aleksei Solonskii, trading as Mirror Fractal Lab (sole proprietor, registered at Calle Suiza 24, 46024 Valencia, Spain; VAT / NIF ESZ1518958C) sells commercial licences for the Mirror Fractal Codec through Paddle (Paddle.com Market Limited), our Merchant of Record. This policy explains when a refund is available and how to request one.
1. Evaluation before purchase
Every prospective licensee may request a free 30-day evaluation build before committing to a paid licence. We strongly recommend evaluating the codec on your own data during this period; most refund requests can be avoided by doing so.
2. Standard refund window
Where statutory consumer-protection rules apply (for example, the EU 14-day right of withdrawal for digital goods purchased without prior evaluation), refunds are issued in full at the customer's request within the legal cooling-off period.
For non-consumer (B2B) purchases, we offer a 14-day satisfaction window from the date of payment. If the codec does not perform as described in the documentation on your representative event-camera data within this window, contact us with a brief reproduction case and we will issue a full refund.
3. Not eligible for refund
Custom integration engagements and bespoke deliverables already accepted in writing.
Renewals of an existing licence after the 14-day window of the original purchase.
Any usage outside the scope of the executed licence agreement.
A short description of the issue or reason for the refund.
We acknowledge requests within two business days. Approved refunds are processed by Paddle to the original payment method, typically within 5–10 business days.
5. Chargebacks
Please contact us before initiating a chargeback — almost all disputes can be resolved by direct refund. Unwarranted chargebacks may result in suspension of future access.