sound disappear

[代坤娟]

hello:

I use the following command to play a media file：

gst-launch --gst-debug-level=queue:3 filesrc location=/usr/local/demo/z.mp4
! ffdemux_mov_mp4_m4a_3gp_3g2_mj2 name=demux demux.video_00 ! queue !
ffdec_mpeg4 ! ffmpegcolorspace ! videoscale ! ximagesink demux.audio_00 !
queue ! faad ! alsasink

the video image playback smooth, but the sound began to emerge only in the 3
to 10 seconds ，then it will disappear to the end, and in the middle there
will be some noise , but i can not see the debugging information to knowwhere a
problem is,. How to solve this problem? Can you tell me how better to debug?
Also,how can i get the time stamp information of audio and video?

pls help me, thank very much!

daisy

Here are my media files Info:

PS: MP4 file info:

General
Complete name                    : E:\demo\z.mp4
Format                           : MPEG-4
Format profile                   : Base Media / Version 2
Codec ID                         : mp42
File size                        : 38.0 MiB
Duration                         : 21mn 47s
Overall bit rate                 : 244 Kbps
Encoded date                     : UTC 2009-08-29 09:23:08
Tagged date                      : UTC 2009-08-29 09:23:08

Video
ID                               : 1
Format                           : MPEG-4 Visual
Format profile                   : Simple at L1
Format settings, BVOP            : No
Format settings, QPel            : No
Format settings, GMC             : No warppoints
Format settings, Matrix          : Default (H.263)
Codec ID                         : 20
Duration                         : 21mn 47s
Bit rate mode                    : Variable
Bit rate                         : 216 Kbps
Width                            : 320 pixels
Height                           : 240 pixels
Display aspect ratio             : 4:3
Frame rate mode                  : Constant
Frame rate                       : 14.985 fps
Resolution                       : 24 bits
Colorimetry                      : 4:2:0
Scan type                        : Progressive
Bits/(Pixel*Frame)               : 0.187
Stream size                      : 33.6 MiB (88%)
Writing library                  : Lavc51.10.0
Encoded date                     : UTC 1970-01-01 00:00:00
Tagged date                      : UTC 2009-08-29 09:23:21

Audio
ID                               : 2
Format                           : AAC
Format/Info                      : Advanced Audio Codec
Format version                   : Version 4
Format profile                   : LC
Format settings, SBR             : Yes
Format settings, PS              : Yes
Codec ID                         : 40
Duration                         : 21mn 46s
Bit rate mode                    : Variable
Bit rate                         : 27.4 Kbps
Channel(s)                       : 2 channels
Channel positions                : Front: L R
Sampling rate                    : 32.0 KHz
Resolution                       : 16 bits
Stream size                      : 4.28 MiB (11%)
Encoded date                     : UTC 1970-01-01 00:00:00
Tagged date                      : UTC 2009-08-29 09:23:21
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