H.264 is the world's most popular video compression standard, while MP4 is the most common file container used to hold it. Together, they create a highly efficient and compatible video file used for everything from YouTube streaming to high-definition Blu-ray discs. H.264 vs. MP4: The Core Difference
Supported by nearly all streaming protocols like HLS, DASH, and RTSP. Practical Quick Facts 264 mp4
Does anyone have strong opinions about using h264 for proxy media? 264 mp4
The combination of H.264 video inside an MP4 container is the industry standard for several reasons: 264 mp4
Plays on almost any device, including iPhones, Androids, smart TVs, and web browsers.
Provides high-quality 1080p or 4K video at significantly lower bitrates and smaller file sizes than older standards.