Audio Tracks titled "Unknown"

[Katzenfan]

With some sources, HB shows in the audio section "1 English (AC3) 5.1", "2 German (AC3) 5.1" and so on. When i play the files after converting on the
ATV2 and i switch the audio sources, it displays the offered audio sources by name (Englisch, German and so on).

But with some sources, HB shows in den Audio Section only "1 unknown", "2 unknown" and so on. When i play these files he ATV2, i also have only "unknown" in the audio selection.

Is there something about it, i can do (so that i can define "German" instead of "2 unknown" and so on)?

---LOG START---
# Windows GUI 0.9.5 2011010300
# Running: Microsoft Windows NT 6.1.7601 Service Pack 1
# CPU: Genuine Intel(R) CPU U7300 @ 1.30GHz
# Ram: 3036 MB
# Screen: 1366x768
# Temp Dir: C:\Users\Admin\AppData\Local\Temp\
# Install Dir: C:\Program Files\Handbrake
# Data Dir: C:\Users\Admin\AppData\Roaming\HandBrake\HandBrake\0.9.5.3728

-------------------------------------------

Query: -i "J:\VOB\Dolby Digital - City (1).vob" -t0 -v
[21:20:24] hb_init: checking cpu count
[21:20:24] hb_init: starting libhb thread
HandBrake 0.9.5 (2011010300) - MinGW i386 - http://handbrake.fr
2 CPUs detected
Opening J:\VOB\Dolby Digital - City (1).vob...
[21:20:24] hb_scan: path=J:\VOB\Dolby Digital - City (1).vob, title_index=0
libbluray/bdnav/index_parse.c:157: indx_parse(): error opening J:\VOB\Dolby Digital - City (1).vob/BDMV/index.bdmv
libbluray/bluray.c:960: nav_get_title_list(J:\VOB\Dolby Digital - City (1).vob) failed (0x1b22d10)
[21:20:24] bd: not a bd - trying as a stream/file instead
libdvdnav: Using dvdnav version 4.1.3
libdvdread: Encrypted DVD support unavailable.
libdvdnav:DVDOpenFileUDF:UDFFindFile /VIDEO_TS/VIDEO_TS.IFO failed
libdvdnav:DVDOpenFileUDF:UDFFindFile /VIDEO_TS/VIDEO_TS.BUP failed
libdvdread: Can't open file VIDEO_TS.IFO.
libdvdnav: vm: failed to read VIDEO_TS.IFO
[21:20:24] dvd: not a dvd - trying as a stream/file instead
[21:20:24] file is MPEG DVD Program Stream
[21:20:25] add_audio_to_title: added AC3 audio stream 0x80bd
[21:20:26] scan: decoding previews for title 1
[21:20:26] scan: audio 0x80bd: AC-3, rate=48000Hz, bitrate=448000 Unknown (AC3) (5.1 ch)
Scanning title 1 of 1...
Scanning title 1 of 1...
[21:20:26] scan: 10 previews, 720x576, 25.000 fps, autocrop = 2/0/12/6, aspect 4:3, PAR 16:15
[21:20:26] scan: title (0) job->width:704, job->height:544
[21:20:26] libhb: scan thread found 1 valid title(s)
+ title 1:
+ stream: J:\VOB\Dolby Digital - City (1).vob
+ duration: 00:00:31
+ size: 720x576, pixel aspect: 16/15, display aspect: 1.33, 25.000 fps
+ autocrop: 2/0/12/6
+ chapters:
+ 1: cells 0->0, 0 blocks, duration 00:00:31
+ audio tracks:
+ 1, Unknown (AC3) (5.1 ch) (iso639-2: und), 48000Hz, 448000bps
+ subtitle tracks:
HandBrake has exited.
---LOG END---

[s55]

Vob files don't contain the language information. Scan the full dvd source, not an individual vob file and it'll pick-up the language info.