Supported External Subtitles; Supported Internal Subtitles - Samsung LED 6400 Series E-Manual

Supported External Subtitles

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Certain files, depending on how they were encoded, may not play on the TV.
MPEG-4 Timed text
SAMI
SubRip
SubViewer
Micro DVD
SubStation Alpha
Advanced SubStation Alpha
Powerdivx
SMPTE-TT Text

Supported Internal Subtitles

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Certain files, depending on how they were encoded, may not play on the TV.
Xsub
SubStation Alpha
Advanced SubStation Alpha
SubRip
VobSub
MPEG-4 Timed text
TTML in smooth streaming
SMPTE-TT TEXT
SMPTE-TT PNG
Name
Name
.ttxt
.smi
.srt
.sub
.sub or .txt
.ssa
.ass
.psb
.xml
Container
AVI
MKV
MKV
MKV
MKV
MP4
MP4
MP4
MP4
Format