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OGV is a video format that uses the Ogg container and typically employs Theora for video compression. It is part of the free and open Ogg multimedia framework. OGV is often used in web applications where open-source licensing is a priority. While not as efficient as newer formats like MP4 or WEBM, it is still supported in many web contexts and browsers that prioritize open standards. OGV is useful for preserving digital freedom and compatibility with open tools.

AAC (Advanced Audio Coding) is a lossy audio compression format developed as the successor to MP3. It provides better sound quality at the same bitrate, making it a preferred choice for streaming and digital music services like Apple Music and YouTube. AAC supports multichannel audio, high sampling rates, and low-latency performance. It is widely supported across platforms and devices, offering a good balance between audio quality and file size.