求助：封装mkv文件时ac3声音档时间短于视频档...

Height                            : 720 pixels
Display aspect ratio              : 16:9
Frame rate                        : 23.976 fps
Resolution                        : 24 bits
Colorimetry                       : 4:2:0
Scan type                         : Progressive
Bits/(Pixel*Frame)                : 0.100
Writing library                   : x264 core 68 r1183M f21daff
Encoding settings                 : cabac=1 / ref=4 / deblock=1:-1:-1 / analyse=0x3:0x113 / me=umh / subme=7 / psy_rd=1.0:0.0 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=-2 / threads=4 / nr=0 / decimate=1 / mbaff=0 / bframes=3 / b_pyramid=0 / b_adapt=1 / b_bias=0 / direct=3 / wpredb=1 / keyint=250 / keyint_min=25 / scenecut=40 / rc=2pass / bitrate=2204 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=50000 / vbv_bufsize=50000 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00
Audio #1
ID                                : 2
Format                            : AAC
Format/Info                       : Advanced Audio Codec
Format version                    : Version 4
Format profile                    : LC
Format settings, SBR              : No
Codec ID                          : A_AAC
Duration                          : 2h 3mn


Channel(s)                        : 6 channels
Channel positions                 : Front: L C R, Rear: L R, LFE
Sampling rate                     : 48.0 KHz
Resolution                        : 16 bits
Title                             : 英语
Language                          : English
Audio #2
ID                                : 3
Format                            : AAC
Format/Info                       : Advanced Audio Codec
Format version                    : Version 4
Format profile                    : LC
Format settings, SBR              : No
Codec ID                          : A_AAC
Duration                          : 2h 3mn
Channel(s)                        : 2 channels
Channel positions                 : L R
Sampling rate                     : 48.0 KHz
Resolution                        : 16 bits
Title                             : 国语
Language                          : Chinese


Text
ID                                : 4
Format                            : UTF-8
Codec ID                          : S_TEXT/UTF8
Codec ID/Info                     : UTF-8 Plain Text
在pc上播放没有问题，但在47寸液晶电视上用移动硬盘播放时出现播一会就没声音然后直接退出的问题。就想是不是mkv文件里的声音AAC档有问题，就用HDVideoConverter.exe把声音转换成了ac3文件但文件导出后发现比原文件短了5分钟多，当然封装后声音画面就不同步。直接转mkv(H264--ac3)出来的文件声音间隔有停顿具体信息如下
General
Complete name                     : E:\FFOutput\[虎口脱险(国法双语)].La.grande.vadrouille.1966.HDDVD.720p.x264.ACC-CMCT.mkv
Format                            : Matroska
File size                         : 2.34 GiB
Duration                          : 2h 3mn
Overall bit rate                  : 2 707 Kbps
Encoded date                      : UTC 2010-02-27 23:57:00
Writing library                   : WonderShare Matroska Muxer
Video
ID                                : 1
Format                            : AVC
Format/Info                       : Advanced Video Codec
Codec ID                          : V_MPEG4/ISO/AVC
Duration                          : 2h 3mn


Bit rate                          : 2 461 Kbps
Width                             : 1 280 pixels
Height                            : 720 pixels
Display aspect ratio              : 16:9
Frame rate                        : 23.976 fps
Bits/(Pixel*Frame)                : 0.111
Stream size                       : 2.13 GiB (91%)
Audio
ID                                : 2
Format                            : AC-3
Format/Info                       : Audio Coding 3
Codec ID                          : A_AC3
Duration                          : 2h 3mn
Bit rate mode                     : Constant
Bit rate                          : 192 Kbps
Channel(s)                        : 2 channels
Channel positions                 : L R
Sampling rate                     : 48.0 KHz
Resolution                        : 16 bits
Video delay                       : 21ms
Stream size                       : 170 MiB (7%)
在网上查好像和制式、帧数有关。。。源文件好像是ntsc制式，求助在不损失画面效果的情况下怎么转换？

　　我遇到了同样的问题，可是没有找到一种好的解决办法。