Audio Lag in Blu Ray Creation

[KOR1]

I have a 2 hour H264 -MPEG-4 AVC file (15 Gbs) with MGEG AAC Audio(mp4a) and am using ImTOO Blu-Ray Creator 2 to create a disk.

There is an audio lag on the output (progressive I think). The lag is there no matter what audio settings I use in the software.

Anyone got any suggestions for fixing this, as I've been going around in circles for the past week trying to solve it.

[KOR1]

Yamb gives these details...........

Track # 1 Info - TrackID 1 - TimeScale 29957 - Duration 01:56:17.085
Media Info: Language "Undetermined" - Type "vide" - Sub Type "avc1" - 209017 samples
MPEG-4 Config: Visual Stream - ObjectTypeIndication 0x21
AVC/H264 Video - Visual Size 1440 x 1080 - Profile High @ Level 4.1
Pixel Aspect Ratio 1:1 - Indicated track size 1440 x 1080
Self-synchronized

Track # 2 Info - TrackID 2 - TimeScale 48000 - Duration 01:56:17.106
Media Info: Language "Undetermined" - Type "soun" - Sub Type "mp4a" - 327070 samples
MPEG-4 Config: Audio Stream - ObjectTypeIndication 0x40
MPEG-4 Audio AAC LC - 2 Channel(s) - SampleRate 48000
Synchronized on stream 1

And Ripbot 264 gives a duration of the video as 1;56:17:144 and the audio as 1;56:17:472
------------

So, anyway I assume the problem is caused by different lengths to the streams. But the MP4 video files plays perfectly with no lag, so there must be a delay coded into the file to achieve the synch.

And, then Imtoo Bluray Creator must ignore that code. I'm no tech guy, so tell me if I'm talking nonsense.

Is the solution to demux the MP4 file, correct the audio, and then remux? And, if so how. Or, would some other Bluray creator be a better option?

[aedipuss]

try getting the video's info with mediainfo. install it, put it into text mode, check your video, copy/paste the results here.

[KOR1]

Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 9.37 GiB
Duration : 1h 56mn
Overall bit rate : 11.5 Mbps
Writing application : Lavf54.6.100

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Format settings, GOP : M=4, N=30
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1h 56mn
Bit rate : 11.3 Mbps
Nominal bit rate : 16.0 Mbps
Width : 1 440 pixels
Height : 1 080 pixels
Display aspect ratio : 4:3
Frame rate mode : Variable
Frame rate : 29.970 fps
Minimum frame rate : 6.003 fps
Maximum frame rate : 30.290 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.243
Stream size : 9.19 GiB (98%)
Writing library : x264 core 58
Encoding settings : cabac=1 / ref=3 / deblock=1:-1:-1 / analyse=0x3:0x113 / me=umh / subme=5 / brdo=0 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=0 / threads=12 / nr=0 / decimate=1 / mbaff=0 / bframes=3 / b_pyramid=0 / b_adapt=1 / b_bias=0 / direct=3 / wpredb=1 / bime=1 / keyint=30 / keyint_min=2 / scenecut=40(pre) / rc=2pass / bitrate=16000 / ratetol=1.0 / rceq='blurCplx^(1-qComp)' / qcomp=0.50 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=40000 / vbv_bufsize=40000 / ip_ratio=1.10 / pb_ratio=1.10

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 1h 56mn
Bit rate mode : Constant
Bit rate : 208 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 173 MiB (2%)

[KOR1]

I think the problem is that ImTOO uses ac3. I think I have to remux the mp4 with audio converted to ac3. But I'm just guessing.