Which codec is commonly associated with best balance of quality and file size, often cited as Best Quality File Size?

• A. H.265
• B. VP9
• C. H.264
• D. Theora

Answer: (C)

The main idea here is how well a codec compresses video while keeping good visual quality, i.e., the balance between quality and file size. H.264 hits a widely recognized sweet spot: it delivers solid, high-quality video at moderate bitrates, and it has become incredibly well-supported across devices, apps, and platforms. That broad compatibility and mature encoding optimize quality for the size you’re aiming for, which is why it’s commonly seen as the best practical balance between quality and file size.

Newer codecs like H.265/HEVC or VP9 can push quality even lower for the same bitrate, but they come with higher encoding complexity, varying degrees of hardware support, and sometimes licensing considerations, which can complicate deployment and affect real-world file size at target playback performance. Theora, being older and far less efficient, typically needs much larger files to achieve the same quality. So, for reliable, efficient performance across many environments, H.264 is the best overall balance.