MEV Dataset License

MEV is released as a source-aware open research dataset. The goal of this
license is to make the dataset directly usable for research, evaluation, and
model training while preserving the provenance and original terms of any
third-party source videos.

1. MEV-created annotations and metadata

The annotations, labels, splits, timestamps, prompts, evaluation metadata,
and other original metadata created by the MEV authors are
released under the Creative Commons Attribution 4.0 International License
(CC BY 4.0), unless a file explicitly states otherwise.

Users may use, share, adapt, redistribute, and build upon these MEV-created
materials, including for research, evaluation, and model training, provided
that they give appropriate credit, provide a link to the license, and indicate
if changes were made.

CC BY 4.0:
https://creativecommons.org/licenses/by/4.0/

2. Released video package

Video files included in the official MEV public release are provided together
with MEV annotations and dataset-level source information as part of the MEV
research data package. These released video files are intended to be directly
downloadable and usable for research, evaluation, and model training, subject
to the applicable source license or platform terms.

MEV does not impose additional restrictions on the released video files beyond
the applicable source terms and the responsible-use requirements described in
this notice. Users do not need to re-crawl the original source websites to
reproduce experiments on videos that are included in the official MEV video
package.

The MEV authors do not claim ownership of third-party video assets. Copyright
and other rights in those videos remain with their original rights holders.
Source attribution, source identifiers, and license/provenance metadata should
be preserved when redistributing or adapting the dataset package.

3. Source-specific terms

MixKit videos included in MEV remain governed by the applicable MixKit stock
video license and MixKit User Terms. MixKit provides item-type-specific stock
video licenses, including free and restricted licenses.

YouTube-hosted source videos remain subject to YouTube's Terms of Service and
any rights or license terms associated with each video. When a video is included
in the official MEV release package, MEV provides it as part of the dataset
package with the corresponding MEV annotations. When a source video cannot
be redistributed, MEV may release only annotations, timestamps, prompts, source
URLs or identifiers, and other metadata where permitted.

Only a small subset of optional 4K source versions may be premium, paid,
restricted, or otherwise separately licensed, and this does not affect the
released MEV video package. Such optional source versions are not automatically
covered by the MEV public release. Users who obtain them directly from the
original source are responsible for following the corresponding source license
and terms.

4. Responsible use

MEV is intended for research and development in long-take multi-event video
generation, event-level video understanding, dataset auditing, and related
tasks. Users should comply with applicable copyright, privacy, data protection,
and research ethics laws, and should not use the dataset to create misleading,
harmful, privacy-invasive, or otherwise unlawful content.

Users should not remove source attribution, copyright notices, license labels,
or provenance metadata from redistributed video files or annotations. Users
should also avoid using MEV to identify people, infer sensitive personal
attributes, or target individuals depicted in source videos.

5. No warranty

MEV is provided on an "AS IS" basis. The MEV authors make no warranties
regarding ownership of third-party video assets, availability of linked source
videos, accuracy of annotations, suitability for any particular purpose, or
compliance of users' downstream uses.

6. Takedown and updates

If a rights holder requests removal of a video file, video reference,
annotation, or related metadata, or if legal, ethical, privacy, or security
concerns arise, the MEV authors may remove or modify the affected materials.
Affected video files will be removed from subsequent public packages when
appropriate. Deprecated entries may be retained only as non-distributive
provenance records when this is needed for reproducibility and is permitted by
the applicable source terms.

7. Legal notice

This license notice is provided for informational purposes and is not legal
advice.