embedded vobsub subtitle not playing

[barjunk]

When I use this command line to stream to http, it doesn't seem to want to display the subtitles.

vlc -I cli --no-sub-autodetect-file --verbose 3 --network-caching=10000 --file-caching=10000 --sout '#standard{access=http,mux=ts}' --http-host=192.168.6.6 --http-port 8080

Here is the version info of the streaming side.
VLC media player 2.1.6 Rincewind (revision 2.1.6-0-gea01d28)
VLC version 2.1.6 Rincewind (2.1.6-0-gea01d28)
Compiled by buildd on lgw01-19.buildd (May 3 2016 01:05:24)
Compiler: gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)

Here is the info from within VLC.

+----[ Stream 2 ]
|
| Sample rate: 48000 Hz
| Type: Audio
| Codec: A52 Audio (aka AC3) (a52 )
| Bitrate: 448 kb/s
| Description: Surround
| Language: English
|
+----[ Stream 0 ]
|
| Display resolution: 720x480
| Type: Video
| Codec: H264 - MPEG-4 AVC (part 10) (avc1)
| Resolution: 720x480
| Frame rate: 23.977027
|
+----[ Stream 3 ]
|
| Codec: DVD Subtitles (spu )
| Type: Subtitle
| Language: English
|
+----[ Stream 1 ]
|
| Sample rate: 48000 Hz
| Type: Audio
| Bitrate: 1536 kb/s
| Codec: MPEG AAC Audio (mp4a)
| Description: Stereo
| Bits per sample: 16
| Language: English
|
+----[ end of stream info ]

At the > prompt I specficially select the subtitle stream with 'strack 3'

It shows on the AppleTV for TvOS (version 1.0.7, based on 3.0.0-git Vetinari) a selection for the subtitle, but when selected, nothing shows.

This is also true for other versions of VLC player on other devices.

I do get a lot of these.

spudec decoder debug: invalid starting packet (size < 4 or pts <=0)
spudec decoder debug: spu size: 0, i_pts: 4571302412 i_buffer: 2

I made the movie file that I'm playing with Handbrake using the Universal setting and added VobSub subtitles.

Maybe I'm missing a setting or something.

[Jean-Baptiste Kempf]

I'm not sure DVD subtitles can get inside TS.

[barjunk]

I wondered about that.

What would be my possible options at this point?

Seems like maybe I can somehow pull the embedded subtitles out of the file and then stream it that way?

Thanks for any ideas you might have about that.