extract subtitles from .ts TNT france

[geek-du-44]

Hello,
for watching TV in my computer i'm using 2 tuners (terratec and pinnacle) one on pciex1 other is 73e stick.

i'm using avidemux 2.6 beta build 67xx, for cut and copy copy mkv
Pb1: it can't, for moment, export 2 audio in same time to output file (but it detect 2 audio)

Pb2: it can't detect subtitles!
VLC can detect subtitles cause we can change in menu video. But How extract subtitles from this video ?

mediainfo:
Texte #1
ID : 740 (0x2E4)
ID de menu : 1 (0x1)
Format : DVB Subtitles
Langue : Français

Texte #2
ID : 741 (0x2E5)
ID de menu : 1 (0x1)
Format : DVB Subtitles
Langue : Allemand

Texte #3
ID : 742 (0x2E6)
ID de menu : 1 (0x1)
Format : DVB Subtitles
Langue : Français