<p>Protecting private video content against access and interception is crucial in the current digital age. In order to overcome this difficulty, the work in this paper provides a secure encryption method that uses chaotic maps to encrypt multiple video streams simultaneously. Our scheme takes videos of different sizes as input, and then merges them into a single video by combining subsequent frames of all the videos horizontally. The encryption strategy comprises of two- chaotic map based two-level permutation and diffusion strategy that is applied to each merged frame. Two of our earlier proposed chaotic maps, Cascaded Coupled Logistic-Sine–Cosine (CCLSC) map and Sine–TangentSine (STS) map, have been used to implement two-level permutation and diffusion. In two-level permutation step, first row wise permutation is carried using STC chaotic map, and then column wise permutation is performed using CCLSC map. Likewise, both maps are used to implement the diffusion step of the proposed multiple video encryption scheme. The encrypted merged video is then either stored or transmitted over an unreliable network from the sender to the receiver site. Since the videos are encrypted and encapsulated as a single unit, they cannot be intercepted or accessed by eavesdroppers, thus ensures secure communication. Only the authorized individuals can decrypt the merged encrypted video at the receiver end and retrieve the different original videos by splitting the merged video into its constituent videos. Experimental evaluation of the work is performed using different standard encryption and decryption parameters. The information entropy of the encrypted image was 7.9998 and correlation coefficient was − 0.00065, − 0.00008, − 0.00053 in horizontal, vertical and diagonal directions respectively. The obtained value of other parameters also demonstrates the effectiveness and security of the proposed encryption scheme. Also, comparative analysis with existing encryption techniques showcases the superiority of our method.</p>