how to extract a subtitle listed as .sbtl ?

[loninappleton]

I have been scratching my head over contradictory info on a subtitle stream or streams for some short videos from a DVD.

My usual tool is handbrake for any of these things and I do not use anything else.

Various troubleshooting tools either report a a subtitle file in sbtl format or don't see anything.

The recoded video files from DVD are in MP4. Various changes to MKV to use toolnix or some such have also failed.

What is the nature of the .sbtl format and how can it be viewed?

[johns0]

https://forum.videohelp.com/threads/404577-Is-there-any-difference-between-SRT-and-SBTL

[ProWo]

You could try clever FFmpeg-GUI for extracting this Subtitle.
Load your video, click main, click extract subtitle stream, select the stream and click extract.

[jagabo]

ffmpeg can extract and convert to SRT or SSA.

https://forum.videohelp.com/threads/404981-Time-Text-subtitles
https://forum.videohelp.com/threads/402515-Problem-with-extracting-tx3g-subtitles

[loninappleton]

You could try clever FFmpeg-GUI for extracting this Subtitle.
Load your video, click main, click extract subtitle stream, select the stream and click extract.

Thanks. I actually got this to work. Of the 7 short clips I just selected one and the response was "No Subtitle Found. " That may be the final word on it but I am going to check the DVD soon to see what plays on that. I can only test on an ASUS PC DVD player-- no standalone or bluray here.

[ProWo]

Could you post one of this clips here, so we can take a look.

[johns0]

Op won't post anything,never does.

[loninappleton]

Op won't post anything,never does.

Not true. But on this what is there to show?

[loninappleton]

Op won't post anything,never does.

Here is the MediaInfo. There may be a clue on that.

General
Complete name : C:\Users\lon\Making War Horse a documentary featurette collection 2009 includes EN subs\Making War Horse Interview with Michael Morpurgo, author featurette.m4v
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42 (isom/iso2/avc1/mp41)
File size : 70.8 MiB
Duration : 23 min 9 s
Overall bit rate : 427 kb/s
Frame rate : 29.970 FPS
Encoded date : 2019-08-17 19:09:01 UTC
Tagged date : 2019-08-17 19:09:01 UTC
Writing application : HandBrake 1.2.2 2019022300

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L4
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 23 min 9 s
Bit rate : 322 kb/s
Width : 720 pixels
Height : 480 pixels
Display aspect ratio : 16:9
Original display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 (30000/1001) FPS
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.031
Stream size : 53.4 MiB (75%)
Writing library : x264 core 157 r2935 545de2f
Encoding settings : cabac=1 / ref=2 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=6 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=3 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=300 / keyint_min=30 / scenecut=40 / intra_refresh=0 / rc_lookahead=30 / rc=crf / mbtree=1 / crf=25.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=20000 / vbv_bufsize=25000 / crf_max=0.0 / nal_hrd=none / filler=0 / ip_ratio=1.40 / aq=1:1.00
Encoded date : 2019-08-17 19:09:01 UTC
Tagged date : 2019-08-17 19:09:01 UTC
Color range : Limited
Color primaries : BT.601 NTSC
Transfer characteristics : BT.709
Matrix coefficients : BT.601
Menus : 4
Codec configuration box : avcC

Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 23 min 9 s
Bit rate mode : Constant
Bit rate : 96.0 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 15.9 MiB (22%)
Title : Stereo
Language : English
Default : Yes
Alternate group : 1
Encoded date : 2019-08-17 19:09:01 UTC
Tagged date : 2019-08-17 19:09:01 UTC
Menus : 4

Text
ID : 3
Format : Timed Text
Muxing mode : sbtl
Codec ID : tx3g
Stream size : 2.00 Bytes (0%)
Language : English
Default : Yes
Forced : No
Alternate group : 3
Encoded date : 2019-08-17 19:09:01 UTC
Tagged date : 2019-08-17 19:09:01 UTC
Count of events : 0
Menus : 4

Menu
ID : 4
Format : Timed Text
Codec ID : text
Duration : 23 min 9 s
Language : English
Encoded date : 2019-08-17 19:09:01 UTC
Tagged date : 2019-08-17 19:09:01 UTC
Bit rate mode : CBR
Menu For : 1,2,3
00:00:00.000 : Chapter 1
00:04:09.182 : Chapter 2
00:08:10.957 : Chapter 3
00:12:01.754 : Chapter 4
00:16:08.634 : Chapter 5
00:20:41.140 : Chapter 6
Bit rate mode : Constant

[ProWo]

Subtitle ID 3 is empty.

[jagabo]

The subtitle type is TX3G Timed Text. The usual for MP4/M4V/MOV containers.

https://developer.apple.com/library/archive/documentation/QuickTime/QTFF/QTFFChap3/qtf...939-CH205-SW81

But they appear to be empty.

[loninappleton]

Oh boy.

I admit I do not know how to read the fine points of MediaInfo's beyond bitrate and some simple things.

This confirms my earlier suspicion that these sbtl entries were "ghost subs."

Thanks for pointing out what I missed. I'll make mediainfos for all seven clips to see if they are the same.

[loninappleton]

yes, the last word on this-- all zero percent content.