Question

which video format is supported by all web browsers that support the <video> tag? a all web browsers that support the <video> tag support webm. b all web browsers that support the <video> tag support mp4. c no one codec is supported by all browsers and browser versions. d all web browsers that support the <video> tag support flash.

Explanation:

To determine the correct answer, we analyze each option:

• Option A: Not all browsers supporting the <video> tag support WebM (e.g., some older browsers may not).
• Option B: While MP4 is widely supported, there are edge - case browsers or older versions that might not support it fully, so claiming all browsers with <video> support MP4 is incorrect.
• Option C: Different browsers and their versions have varying codec support. For example, some older browsers might not support modern codecs, and there is no single codec that is universally supported across all browsers and their versions.
• Option D: Flash is being phased out and is not related to the <video> tag's native support in modern browsers, so this is incorrect.

Answer:

C. No one codec is supported by all browsers and browser versions.