<p>Video steganography permits hiding pieces of secret information inside video sequences. Video sequences are preferred as cover material connected to other media kinds, such as images, text, or voice, due to their large capacity and difficult structure. Video steganography is a well-known and rapidly expanding topics in information security, with numerous techniques enhanced in the present years. This work describes a significant video steganography technique that uses Binary Discrete Cosine Transform (BDCT) and Pixel-based Advanced Video Coding (PAVC) encryption algorithms for embedding and protecting information concealed within video files. Steganography, the practice of concealing information inside other non-secret data, requires the concealed data to remain invisible. The proposed PAVC-BDCT method takes advantage of BDCT’s strong properties to alter binary-level video data, enhancing the steganographic procedures’ imperceptibility and capacity. Concurrently, an AVC-compliant pixel-based encryption method is used to encrypt the payload preceding to embedding, adding an extra layer of protection. This dual method ensures that the concealed data is well-masked inside the host video stream while concurrently protecting against unauthorized access via encryption. The performance of this method is evaluated in terms of embedding capacity, human-eye imperceptibility, resilience against many attacks (such as compression and resizing), and computational efficiency. The results found that this combined steganographic and encryption technique provides a particularly secure, efficient, and reliable way for hidden data transfer in video applications.</p>