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View Full Version : conversion thru megui puts audio out of sync


akby
30th August 2007, 18:56
hi

the file in question is an avi file with xvid and mp3
i use the regular way of going through the avisynth script creator
i then put it in one of the x264 profiles as i have done a number of times before
i put the audio input as the avi file and convert to mp4-aac
the finished video has the audio fine at the beginning but after a while the audio is left behind i.e. the video moves first then the dialogue follows. after more time the difference becomes more as the audio gets pushed further back

i cant seem to work thru it

please help

nicco
7th September 2007, 11:23
same problem... dont know how to fix:devil:

ArdenDag
7th September 2007, 11:28
Hello

If the audio is falling farther and farther behind as the video is going, my first thought is that the audio was encoded using a different frame rate as reference than the video itself. Even the difference between 30fps and 29.97fps can cause that problem.

Hope that helps
Arden

akby
7th September 2007, 12:50
that may be but how do i fix it

the video gets encoded fine in nero recode 2 , maybe because it encodes audio and video side by side but i prefer x264 and its crf

nicco
7th September 2007, 15:40
my movie is 25fps PAL DV, i frameserved it with avs via "directshowsource", then encoded with Megui.

Maybe the problem is this filter, i will try to use "avisource"

akby
8th September 2007, 17:28
avisource fixed it

guess directshow source is a bit messed up

check
9th September 2007, 04:25
if you skip halfway to the end of the film, does the audio come back into sync and then slowly go out of sync again?

akby
9th September 2007, 18:38
if you skip halfway to the end of the film, does the audio come back into sync and then slowly go out of sync again?

i am not sure of that
i mostly just skip to about 80% of the duration and check if the audio is in sync

nicco
10th September 2007, 08:58
avisource fixed it

YES!! "directshowsource" was the problem!!

if you skip halfway to the end of the film, does the audio come back into sync and then slowly go out of sync again?

no, audio is always in sync

cross_syd
10th September 2007, 12:19
use virtualdub instead

nicco
10th September 2007, 12:28
use virtualdub instead

No need....

and the problem was in AVS script not in MeGUI