Mkvmerge error.

[pcroland]

A wanted to merge these files:
01.h264
01.ac3 (Hungarian)
01.aac (English)
01.srt (English)
I merged these files with mkvmerge like that:
mkvmerge -o 01.mkv --language 0:eng 01.h264 --language 0:hun 01.ac3 --language 0:eng 01.aac --default-track 0:no --language 0:eng 01.srt
This is the mediainfo output:
General
Unique ID : 198539730609906208309661724493362967467 (0x955D5C79C7BF50F52B3116D1D5C733AB)
Complete name : 01.mkv
Format : Matroska
Format version : Version 4 / Version 2
File size : 170 MiB
Duration : 22mn 48s
Overall bit rate : 1 042 Kbps
Encoded date : UTC 2014-05-07 16:58:10
Writing application : mkvmerge v6.9.1 ('Blue Panther') 64bit built on Apr 18 2014 18:34:40
Writing library : libebml v1.3.0 + libmatroska v1.4.1

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 16 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 22mn 48s
Width : 720 pixels
Height : 404 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Writing library : x264 core 142 r2431 ac76440
Language : English
Default : Yes
Forced : No
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio #1
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : A_AC3
Duration : 22mn 48s
Bit rate mode : Constant
Bit rate : 192 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 31.3 MiB (18%)
Language : Hungarian
Default : Yes
Forced : No

Audio #2
ID : 3
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : A_AAC
Duration : 22mn 48s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Language : English
Default : No
Forced : No

Text
ID : 4
Format : UTF-8
Codec ID : S_TEXT/UTF8
Codec ID/Info : UTF-8 Plain Text
Language : English
Default : No
Forced : No
So the .mkv file contains only one subtitle, but when I play the video with VLC I see two subtitles: http://i.imgur.com/kArFnwf.png I send the file to my friend and he seen 6 subtitles.
Is this a mkvmerge bug? :-/

[Asmodian]

More likely it is a bug in VLC (and whatever your friend is using), what does it look like in MPC-HC?

[pcroland]

I'm not able to use MPC-HC on Ubuntu :D But this is the only file which is buggy, other files with the same structure are okay in VLC. I think this is not a VLC bug :-)

[foxyshadis]

Your player is picking up external subtitles from somewhere else.