NO AUDIO on an mp4 video from google

[stormy1777]

Turning to the experts...

I got this file:

http://vp.video.google.com/videodownload?version=0&secureurl=twAAABJsymWuwBhSECpe031Y9XpoFbbgww7ZAKHfSvLUU5alnA6PGlzvCiWjYWhlGk40Y3tGbYz90XDwwd7ovYnH1EtWUbeqxnBfyGSpTI6of3Xqm-6XYRpr0bivWFDXUre2T2VEI01Dxt--Me0DK7EM1zdLgmn7BBYU-z4-S7sAGDg8mthNkB0_ZKY0u468Hum7ohUdFosPDmoCgqXLtJQn4Kwxfv2anIInII1eSiCr-ur62Q_wSH4h6RaAP1SowkXwJg&sigh=uy2BUjcVa4gh4qWtwhetIzlz764&begin=0&len=178917&docid=-4495546151448213121

from google video, it's mp4, and plays both video+music in windows media player 9. but in bsplayer v2 only video plays, no audio..

any ideaS? Tried gspot 2 but doesn't give any info on the mp4 contents.. any good mp4 content inspection software?

[Irakli]

Tried gspot 2 but doesn't give any info on the mp4 contents.. any good mp4 content inspection software?

Here is the information Avinaptic (http://forum.doom9.org/showthread.php?p=966470#post966470) provides about your file:


[ About file ]

Name: 58cbead5a94087a3.avi.mp4
Date: 25/05/2008 23:07:54
Size: 10,296,160 bytes (9.819 MB)

[ Generic infos ]

Play duration: 00:02:59 (179.185 s)
Container type: MP4/MOV
Major brand: ISO Base Media version 1
Creation time: 30/06/2007 05:33:12 UTC
Modification time: 30/06/2007 05:33:12 UTC
Number of streams: 2
Type of stream nr. 1: video (avc1) {GPAC ISO Video Handler}
Type of stream nr. 2: audio (AAC Low complexity) {GPAC ISO Audio Handler}
Audio streams: 1

[ Relevant data ]

Resolution: 320 x 240
Width: multiple of 32
Height: multiple of 16
Average DRF: 17.260521
Standard deviation: 2.621588
Std. dev. weighted mean: 2.590956

[ Video track ]

Codec: avc1
Resolution: 320 x 240
Frame aspect ratio: 4:3 = 1.333333
Pixel aspect ratio: 1:1 = 1
Display aspect ratio: 4:3 = 1.333333
Framerate: 29.969 fps
Number of frames: 5370
Bitrate: 331.549067 kbps

[ Audio track ]

Codec: AAC Low complexity
Bitrate: 125.571008 kbps
Channels: 2
Sample rate: 44100 Hz

[ About H.264 encoding ]

User data: x264
User data: core 44 svn-440
User data: H.264/MPEG-4 AVC codec
User data: Copyleft 2005
User data: http://www.videolan.org/x264.html
User data: cabac=0
User data: ref=1
User data: deblock=1:0:0
User data: analyse=0x1:0x31
User data: me=umh
User data: subme=6
User data: brdo=0
User data: mixed_ref=0
User data: me_range=32
User data: chroma_me=1
User data: trellis=0
User data: 8x8dct=0
User data: cqm=0
User data: chroma_qp_offset=0
User data: slices=1
User data: nr=0
User data: bframes=0
User data: keyint=60
User data: keyint_min=25
User data: scenecut=40
User data: rc=cbr
User data: bitrate=330
User data: ratetol=1.0
User data: rceq='blurCplx^(1-qComp)'
User data: qcomp=0.60
User data: qpmin=10
User data: qpmax=38
User data: qpstep=2
User data: vbv_maxrate=700
User data: vbv_bufsize=350
User data: ip_ratio=1.40
SPS id: 0
Profile: Baseline@L1.3
Num ref frames: 1
Chroma format idc: YUV 4:2:0
PPS id: 0 (SPS: 0)
Entropy coding type: CAVLC
Weighted prediction: No
Weighted bipred idc: No
8x8dct: No
Number of frames: 5370
Drop/delay frames: 0
Corrupted frames: 0

P-slices: 5280 ( 98.324 %) #########################
B-slices: 0 ( 0.000 %)
I-slices: 90 ( 1.676 %)
SP-slices: 0 ( 0.000 %)
SI-slices: 0 ( 0.000 %)

[ DRF analysis ]

Average DRF: 17.260521
Standard deviation: 2.621588
Max DRF: 28

DRF<10: 0 ( 0.000 %)
DRF=10: 1 ( 0.019 %)
DRF=11: 20 ( 0.372 %)
DRF=12: 121 ( 2.253 %) #
DRF=13: 190 ( 3.538 %) #
DRF=14: 519 ( 9.665 %) ##
DRF=15: 602 ( 11.210 %) ###
DRF=16: 754 ( 14.041 %) ####
DRF=17: 703 ( 13.091 %) ###
DRF=18: 728 ( 13.557 %) ###
DRF=19: 578 ( 10.764 %) ###
DRF=20: 576 ( 10.726 %) ###
DRF=21: 334 ( 6.220 %) ##
DRF=22: 110 ( 2.048 %) #
DRF=23: 70 ( 1.304 %)
DRF=24: 35 ( 0.652 %)
DRF=25: 21 ( 0.391 %)
DRF=26: 6 ( 0.112 %)
DRF=27: 1 ( 0.019 %)
DRF=28: 1 ( 0.019 %)
DRF>28: 0 ( 0.000 %)

P-slices average DRF: 17.312121
P-slices std. deviation: 2.598645
P-slices max DRF: 28

I-slices average DRF: 14.233333
I-slices std. deviation: 2.139833
I-slices max DRF: 21

[ Profile compliancy ]

Profile to check: MTK PAL 6000
Resolution: Ok
Framerate: Ok
Min buffer fill: 79%

This report was created by AVInaptic (18-11-2007)


So, your file is Baseline h264 video & AAC audio wrapped in MP4 container. I also quickly looked at BSPlayer's website and found that BSPlayer does support AAC audio, so no-sound problem seems quite strange.

Could you please test any other file with AAC audio in BSPlayer in order to determine whether this is file-specific problem?

[unskinnyboy]

Render the MP4 file in GraphEdit or GraphStudio to see how the audio part is getting decoded. Also, your GSpot version seems to be outdated. The latest beta supports MP4 files just fine.

[stormy1777]

Cool, thanks for all the information!! I installed: http://www.mediafire.com/download.php?2dbm04s5dzg (Core AAC) and now both video/audio play ok.

before graphedit said some codecs are not supported, now it shows audio OK too.

Thanks.