Question 1

What is the difference between video file formats and codecs?

Accepted Answer

Video file formats (like MP4, MOV, MKV) are containers—they hold your video, audio, subtitles, and metadata. Codecs (like H.264 or VP9) are the compression algorithms that encode/decode the actual media streams inside those containers. You need both to properly play or edit a video.

Question 2

Which video file type is best for YouTube or online streaming?

Accepted Answer

MP4 is the most recommended format for YouTube and online streaming. It offers a good balance of quality and file size, is compatible across all platforms, and typically uses the H.264 codec for efficient compression.

Question 3

When should I use MOV instead of MP4?

Accepted Answer

Use MOV when working in professional video production, especially if you're on a Mac or using editing software like Final Cut Pro. MOV files often use Apple ProRes and support higher-quality video editing workflows, although they can be larger in size.

Question 4

Is MKV better than MP4 for archiving?

Accepted Answer

Yes, MKV is generally considered better for archiving because it can store multiple video, audio, and subtitle tracks in a single file and supports nearly any codec. However, MP4 has broader device compatibility.

Question 5

Is AVI still used today?

Accepted Answer

AVI is still used, especially for older content or when dealing with uncompressed or lightly compressed video. But it's considered outdated for most modern workflows due to large file sizes and limited codec efficiency.

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