방송스트림을 녹화하면 밑 부분처럼 영상자체에 자막 데이터가 들어있다는 정보가

표시됩니다..자막을 지원해주는 HDTV나 다음팟을 통해 시청할때 실시간TV에서

자막이 표시되는 것처럼 청각장애인용 자막을 볼 수 있죠..

인코딩할 경우 당연히 자막데이터가 들어있는 파일의 속성이 달라지니

말씀하신 부분의 표시는 없어지게 됩니다..

(같은 TS로 복사하지 않는 이상 보존되지는 않을텐데 이상하네요)

720P로 인코딩한 예)

Complete name               :
Format                      : Matroska
Format version              : Version 4 / Version 2
File size                   : 24.3 MiB
Writing application         : ShanaEncoder
Writing library             : ShanaEncoder / ShanaEncoder
IsTruncated                 : Yes

Video
ID                          : 1
Format                      : AVC
Format/Info                 : Advanced Video Codec
Format profile              : High@L4.1
Format settings, CABAC      : Yes
Format settings, ReFrames   : 4 frames
Codec ID                    : V_MPEG4/ISO/AVC
Width                       : 1 280 pixels
Height                      : 720 pixels
Display aspect ratio        : 16:9
Frame rate mode             : Constant
Frame rate                  : 29.970 (30000/1001) fps
Color space                 : YUV
Chroma subsampling          : 4:2:0
Bit depth                   : 8 bits
Scan type                   : Progressive
Writing library             : x264 core 148 r2705 3f5ed56
Default                     : Yes
Forced                      : No

Audio
ID                          : 2
Format                      : MPEG Audio
Format version              : Version 1
Format profile              : Layer 3
Mode                        : Joint stereo
Mode extension              : MS Stereo
Codec ID                    : A_MPEG/L3
Codec ID/Hint               : MP3
Bit rate mode               : Constant
Bit rate                    : 192 Kbps
Channel(s)                  : 2 channels
Sampling rate               : 48.0 KHz
Compression mode            : Lossy
Language                    : Korean
Default                     : Yes
Forced                      : No

원본정보)

General
ID                          : 1 (0x1)
Complete name               :
Format                      : MPEG-TS
File size                   : 8.28 GiB
Duration                    : 1h 4mn
Overall bit rate mode       : Variable
Overall bit rate            : 18.3 Mbps

Video
ID                          : 33 (0x21)
Menu ID                     : 1 (0x1)
Format                      : MPEG Video
Format version              : Version 2
Format profile              : Main@High
Format settings, BVOP       : Yes
Format settings, Matrix     : Custom
Format settings, GOP        : M=3, N=15
Format settings, picture st : Frame
Codec ID                    : 2
Duration                    : 1h 4mn
Bit rate                    : 17.0 Mbps
Maximum bit rate            : 17.4 Mbps
Width                       : 1 920 pixels
Height                      : 1 080 pixels
Display aspect ratio        : 16:9
Active Format Description   : Letterbox 16:9 image
Frame rate                  : 29.970 (30000/1001) fps
Standard                    : Component
Color space                 : YUV
Chroma subsampling          : 4:2:0
Bit depth                   : 8 bits
Scan type                   : Interlaced
Scan order                  : Top Field First
Compression mode            : Lossy
Bits/(Pixel*Frame)          : 0.273
Time code of first frame    : 00:00:00;00
Time code source            : Group of pictures header
GOP, Open/Closed            : Open
GOP, Open/Closed of first f : Closed
Stream size                 : 7.70 GiB (93%)

Audio
ID                          : 36 (0x24)
Menu ID                     : 1 (0x1)
Format                      : AC-3
Format/Info                 : Audio Coding 3
Mode extension              : CM (complete main)
Format settings, Endianness : Big
Codec ID                    : 129
Duration                    : 1h 4mn
Bit rate mode               : Constant
Bit rate                    : 384 Kbps
Channel(s)                  : 2 channels
Channel positions           : Front: L R
Sampling rate               : 48.0 KHz
Frame rate                  : 31.250 fps (1536 spf)
Compression mode            : Lossy
Delay relative to video     : 22ms
Stream size                 : 178 MiB (2%)
Language                    : Korean

Text
ID                          : 33 (0x21)-1
Menu ID                     : 1 (0x1)
Format                      : EIA-708
Muxing mode                 : A/53 / DTVCC Transport
Muxing mode, more info      : Muxed in Video #1
Duration                    : 1h 4mn
Bit rate mode               : Constant
Stream size                 : 0.00 Byte (0%)