Hello All;

I'm new to transcoding and I wasn't sure if this should be in the audio or video transcoding thread.

I have been trying (unsuccessfully) to transcode a DVD to MKV format: H.264 video format at 3000 kbps with all other settings matching the original VOB; audio kept as is (AC3 192 kbps); MKV container. I have been tinkering around with MediaCoder and XviD4PSP 6.0--I like both programs but, so far, I have had less issues with XviD4PSP 6.0 (I'm in love with this program).

My delima: I can not get the audio to match up with video. I have done some homework and discovered that audio can be out of sync when the file's original fps is altered or if the original file profile is changed (VBR vs CBR vs ABR). Even when keeping the fps as is and keeping the original audio format and settings the resulting transcoded product presents with out of sync A/V.

I believe the problem stems from the VOB settings in that the audio and video start times differ. See below for VOB information:

Name: VTS_01_3.VOB
Size: 1.0gb (1073739776 bytes)
FormatName: MPEG
FormatLongName: MPEG-PS format
StreamCount: 2

AudioStream 0:
CodecName: ac3
CodecLongName: ATSC A/52A (AC-3)
Timebase: 1 / 90000
StartTime: 211542867
FirstDTS: 211542867
LastDTS: 317094867
LastPTS: 317094867
Frames: 36651
Size: 26.8mb
Bitrate: 192kbps
ActualBitrate: 192kbps
Channels: 2
Samplerate: 48000hz
SampleFormat: SAMPLE_FMT_S16

VideoStream 1:
CodecName: mpeg2video
CodecLongName: MPEG-2 video
Timebase: 1 / 90000
StartTime: 211606395
FirstDTS: 211588377
LastDTS: 317104788
LastPOS: 1073733646
Frames: 35150
Size: 1.0gb
Bitrate: 7000kbps
ActualBitrate: 6999kbps
Resolution: 720x480i
Interlace: BFF
Aspect: 1.778
PixelFormat: YUV420P
Framerate: 29.970
B-frames mode: 1
Max refs frames: 1
ID: 480


Video-Audio: 211606395-211542867=63528


The start time for the video and audio differ by 63528 milliseconds (I assume the unit of measurement is ms) and I presume that transcoding abolishes this start time difference. How in the hell do I get Xvid4PSP 6.0 to keep the original start times of the video and audio or instruct the program to shift the audio to fit the video file?! Please help.