MKV con audio fuori sincrono

[danny2005]

Ho rippato un documentario blu ray con Aiseesoft Blu-ray Ripper tenendo la traccia italiana.

Successivamente ho pensato di aggiungergli la traccia in inglese, estratta da un altro mkv dello stesso documentario; ho usato MKVExtractGUI2.
La i due mkv hanno la stessa durata.
Dopo aver muxato la traccia inglese con mkvmerge mi accorgo che l'audio è in anticipo rispetto al video, specialmente alla fine. Si tratterà di 1 secondo circa.

Cosa posso fare?

Forse è un problema di fps? nel rippare ho selezionato come fps keep original, mentre usando mediainfo sul file mkv che ha anche la traccia inglese l'fps risulta 25.....

Qui di seguito il report dell'mkv con l'audio inglese che è ok (ho prelevato la traccia inglese da questo)

Complete name : K:\HD Documentaries\Morgan Freeman Science Show - Le Frontiere Dell'Astronomia\Episodio 6 - Oltre Le Tre Dimensioni.mkv
Format : Matroska
Format version : Version 2
File size : 7.84 GiB
Duration : 43mn 12s
Overall bit rate mode : Variable
Overall bit rate : 26.0 Mbps
Encoded date : UTC 2012-09-02 10:26:12
Writing application : mkvmerge v5.4.0 ('Piper') built on Mar 10 2012 13:34:39
Writing library : libebml v1.2.3 + libmatroska v1.3.0

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Muxing mode : Header stripping
Codec ID : V_MPEG4/ISO/AVC
Duration : 43mn 12s
Bit rate mode : Variable
Maximum bit rate : 40.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Title : Morgan Freeman Science Show Ep. 6 - Oltre Le Tre Dimensioni
Default : Yes
Forced : No

Audio #1
ID : 2
Format : TrueHD
Codec ID : A_TRUEHD
Duration : 43mn 12s
Bit rate mode : Variable
Maximum bit rate : 2 040 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 24 bits
Compression mode : Lossless
Title : Italiano TRUE HD
Default : Yes
Forced : No

Audio #2
ID : 3
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Muxing mode : Header stripping
Codec ID : A_AC3
Duration : 43mn 12s
Bit rate mode : Constant
Bit rate : 448 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 138 MiB (2%)
Title : Italiano AC3
Default : No
Forced : No

Audio #3
ID : 4
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Muxing mode : Header stripping
Codec ID : A_AC3
Duration : 43mn 12s
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 : 59.3 MiB (1%)
Title : English AC3
Default : No
Forced : No

Text #1
ID : 5
Format : UTF-8
Codec ID : S_TEXT/UTF8
Codec ID/Info : UTF-8 Plain Text
Title : Italiano
Default : No
Forced : No

Text #2
ID : 6
Format : UTF-8
Codec ID : S_TEXT/UTF8
Codec ID/Info : UTF-8 Plain Text
Title : Inglese
Default : No
Forced : No

Menu
00:00:00.000 : en:00:00:00.000
00:01:08.360 : en:00:01:08.360
00:09:55.040 : en:00:09:55.040
00:17:14.280 : en:00:17:14.280
00:32:37.680 : en:00:32:37.680
00:42:39.800 : en:00:42:39.800

e qui il report mediainfo dell'mkv a cui ho aggiunto la traccia inglese e che risulta sfasato

Complete name : C:\Documents and Settings\Utente\Desktop\Blu ray prova\Episodio 6 - Oltre Le Tre Dimensioni #.mkv
Format : Matroska
Format version : Version 2
File size : 5.21 GiB
Duration : 43mn 12s
Overall bit rate mode : Variable
Overall bit rate : 17.3 Mbps
Encoded date : UTC 2012-10-09 08:39:11
Writing application : mkvmerge v5.4.0 ('Piper') built on Mar 10 2012 13:34:39
Writing library : libebml v1.2.3 + libmatroska v1.3.0

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Muxing mode : Header stripping
Codec ID : V_MPEG4/ISO/AVC
Duration : 43mn 12s
Nominal bit rate : 15.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.289
Title : Episodio 6 - Oltre Le Tre Dimensioni
Writing library : x264 core 77
Encoding settings : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=8 / psy=1 / psy_rd=1.0:0.0 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=-2 / threads=2 / nr=0 / decimate=1 / mbaff=0 / constrained_intra=0 / bframes=3 / b_pyramid=0 / b_adapt=2 / b_bias=0 / direct=3 / wpredb=32 / keyint=12 / keyint_min=7 / scenecut=40 / rc_lookahead=12 / rc=abr / mbtree=1 / bitrate=15000 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / ip_ratio=1.41 / aq=1:1.00
Default : Yes
Forced : No

Audio #1
ID : 2
Format : TrueHD
Codec ID : A_TRUEHD
Duration : 43mn 12s
Bit rate mode : Variable
Maximum bit rate : 2 040 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Compression mode : Lossless
Delay relative to video : -160ms
Title : Italiano TRUE HD
Default : Yes
Forced : No

Audio #2
ID : 3
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Muxing mode : Header stripping
Codec ID : A_AC3
Duration : 43mn 12s
Bit rate mode : Constant
Bit rate : 448 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Delay relative to video : -160ms
Stream size : 138 MiB (3%)
Title : Italiano AC3
Default : No
Forced : No

Audio #3
ID : 4
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Muxing mode : Header stripping
Codec ID : A_AC3
Duration : 43mn 12s
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
Delay relative to video : -160ms
Stream size : 59.3 MiB (1%)
Title : English AC3
Default : No
Forced : No

Text #1
ID : 5
Format : UTF-8
Codec ID : S_TEXT/UTF8
Codec ID/Info : UTF-8 Plain Text
Title : Italiano
Default : No
Forced : No

Text #2
ID : 6
Format : UTF-8
Codec ID : S_TEXT/UTF8
Codec ID/Info : UTF-8 Plain Text
Title : Inglese
Default : No
Forced : No