How POLYV Ensures Video Anti-Piracy (FAQ Topic 4)

With the explosive growth of online education, it has gained increasing attention. Video anti-piracy technology is a key concern for the online education industry. Here, we provide a detailed explanation:

1. What is Playback Domain Restriction?

The playback domain restriction feature allows you to implement video hotlinking protection. Currently, pirates can extract video playback URLs from source code and copy them to their own websites for direct playback. This not only infringes on the copyright of the video owner but also increases bandwidth consumption on the original video source site.

Playback domain restriction works by setting up a whitelist or blacklist for videos in the POLYV backend. Domains on the blacklist cannot play the video, while all other domains can. Conversely, only domains on the whitelist are allowed to play the video, and all others are denied. This effectively prevents video links from being stolen.

2. What is Video Watermarking?

Video watermarking is configured before video upload. During video transcoding, the backend processes the watermark to merge it with the video, making it impossible for pirates to remove. The watermark position can be customized. Even if the video is embedded on another website, the watermark remains attached to the video, serving as a copyright protection measure.

3. What is Video File Encryption?

The video file encryption technology used by POLYV is a content protection system based on keyframe disordering. Even if a video file is illegally downloaded by pirates, it cannot be played without the POLYV video player. Additionally, each video file has a unique key, so even if one file is cracked, other files remain secure. This significantly increases the difficulty for crackers. This technology provides anti-download security for online videos.

4. How to Prevent Screen Recording?

Achieving complete screen recording prevention seems like an impossible problem. Video files can be easily captured using computer software, VGA hardware, or cameras. In the past, low-level interference measures like watermarks were added to videos, but online videos were still easily pirated. POLYV's newly launched interactive quiz player effectively addresses this issue. Users can insert questions during video playback. At specified time points, the player automatically pops up questions requiring viewers to answer. Viewers must answer correctly to continue playback; if answered incorrectly, the video can jump to another specified time point. In online video teaching applications, the more interactive questions inserted, the better the screen recording prevention effect. This not only enhances learning outcomes but also significantly increases the operational cost for pirates while reducing the usability of stolen videos.

Additionally, POLYV has introduced a marquee technology. Through API integration with user websites, visitors' IDs are displayed as a marquee while watching videos. Since the visitor IDs appear in a random pattern, this greatly increases the difficulty of post-processing for screen recorders, effectively solving the problem of video piracy.