Subtitles codecs

Subtitles Status

Subtitle Name	Extension	Subtitle Type	Character Encoding	Line Break	Text Styling	Metadata Info	Timings	Timing Precision	VLC media player Support
AQTitle	*.aqt	Text-based	None	Yes	No	No	Framings	Dependent on Frame	Yes (0.9.0 and over)
Blu-Ray	N/A	Image-based	N/A	N/A	N/A	No	Elapsed Time	Unknown	Yes (1.1.0 and over)
CVD subtitles	*.cvd	Image-based	N/A	N/A	N/A	No	Elapsed Time	Unknown	Yes
DKS	*.dks	Text-based	None	Yes	No	No	Elapsed Time	Unknown	Yes (0.9.0 and over)
DVB Subtitles	N/A (in DVB streams)	Image-based	N/A	N/A	N/A	No	Elapsed Time	Unknown	Yes
DVD Subtitles	N/A	Image-based	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown
JACOsub	*.jss	Text-based	None	Yes	Yes	No	Elapsed Time	10 Milliseconds (1/100th sec)	Yes (0.9.0 and over), no styles
Kate	N/A (inside OGG)	Text-based	None	Yes	Yes	No	Unknown	Unknown	Yes (0.9.0 and over), no styles
MicroDVD	*.sub	Text-based	None	Yes	No	No	Framings	Dependent on Frames	Yes
MPEG-4 Timed Text	.ttxt	XML	Unknown	Unknown	Yes	No	Elapsed Time	1 Millisecond	Yes
MPL2	*.mpl/.txt	Text-based	None	Yes	No	No	Sequential Time	100 Milliseconds (1/10th sec)	Yes, no italic
MPSub	*.sub	Text-based	None	Yes	No	Yes	Sequential Time	10 Milliseconds (1/100th sec)	Yes (0.9.0 and over)
OggWrit	N/A (inside Oggs)	Text-based	None	No	Yes	Yes	Sequential Granules	Dependent on Bitstream	untested ???- Not specified yet.
Phoenix Subtitle	*.pjs	Text-based	None	No	No	No	Framings	Dependent on Frames	Yes (0.9.0 and over)
PowerDivX	.psb	Text-based	None	No	No	No	Elapsed Time	1 Second	Yes (0.9.0 and over)
RealText / SMIL	*.rt	HTML-based	Unicode (UTF-8)	Yes	Yes (SMIL)	No	Elapsed Time	10 Milliseconds (1/100th sec)	Yes (0.9.0 and over)
SAMI	*.smi	HTML-based	Unicode (Windows-1252)	Yes	Yes (CSS)	Yes	Framings	Dependent on Frames	Yes
Structured Subtitle Format	.ssf	XML	None	No	Yes	Yes	Elapsed Time	1 Millisecond	No
SubRip	*.srt	Text-based	Informally Unicode	Yes	No	No	Elapsed Time	1 Millisecond (1/1000th sec)	Yes
SubStation Alpha	*.ssa/.ass	Text-based	None	No	Yes	Yes	Elapsed Time	10 Milliseconds (1/100th sec)	Yes, 0.9.0 and over
SubViewer	*.sub	Text-based	None	Yes	No	Yes	Elapsed Time	10 Milliseconds (1/100th sec)	Yes
SVCD subtitles	*.svcd	Image-based	N/A	N/A	N/A	No	Elapsed Time	Unknown	Yes
Telx	Unknown	Text-based	Unknown	Unknown	Unknown	Unknown	Unknown	Unknown	Yes
Universal Subtitle	*.usf	XML	Unicode (UTF-8)	No	Yes (XML DTD)	No	Elapsed Time	1 Millisecond (1/1000th sec)	Yes, 0.9.0 and over
VobSub	*.sub, *.idx	Image-based	N/A	N/A	N/A	N/A	Elapsed Time	1 Millisecond (1/1000th sec)	Yes
VPlayer	*.txt	Text-based	None	Yes	No	No	Framing or Time	10 Milliseconds (1/100th sec)	Yes
DivX Subtitles (XSUB)	N/A (embedded in .divx)	Image-based	N/A	N/A	N/A	No	Elapsed Time	1 Millisecond	Yes (1.1.0 and over)