Subtitles and Caption Subtitle File Formats and Standards 2

Question 1

Which subtitle format uses XML-based markup and is the W3C recommendation for timed text on the web?

Accepted Answer

TTML (Timed Text Markup Language)

Answer

TTML (Timed Text Markup Language) is the W3C's XML-based standard for timed text, used for web-based delivery and as the basis for streaming platform formats like IMSC.

Question 2

What is the difference between SRT and SSA/ASS subtitle formats?

Accepted Answer

SSA/ASS supports advanced styling including fonts, colors, animations, and karaoke effects; SRT does not

Answer

SSA (SubStation Alpha) and its successor ASS (Advanced SubStation Alpha) support extensive styling options including per-line fonts, colors, animations, and karaoke timing that SRT lacks.

Question 3

What timecode format does SRT use to specify subtitle timing?

Accepted Answer

HH:MM:SS,mmm (hours:minutes:seconds,milliseconds)

Answer

SRT timecodes use the format HH:MM:SS,mmm where mmm represents milliseconds, giving millisecond-level timing precision.

Question 4

What does 'sidecar file' mean in the context of subtitles?

Accepted Answer

A separate subtitle file delivered alongside the video file rather than embedded within it

Answer

A sidecar file is a separate subtitle file (like .srt or .vtt) that accompanies a video file but is not embedded within the video container itself.

Question 5

Which subtitle format is natively supported by YouTube for automatic caption display when uploaded?

Accepted Answer

SRT, VTT, SBV, and several other formats are accepted

Answer

YouTube accepts multiple subtitle formats including SRT, VTT, SBV, TTML, and others, making it flexible for creators uploading captions from various tools.

Subtitles and Caption Practice Test

Subtitles and Caption Practice Test

Subtitles and Caption Subtitle File Formats and Standards 2