Enum listing the possible video sources.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v25/enums/video_enhancement_source.proto)

| Enums ||
|---|---|
| ## `ADVERTISER` | The video is provided by the advertiser. |
| ## `ENHANCED_BY_GOOGLE_ADS` | The video is an enhancement generated by Google. |
| ## `UNKNOWN` | Used for return value only. Represents value unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |