Audio Sync Problem

[Harm Millaard]

Convert 44.1 to 48 KHz and use that. 32 bit is used internally by Premiere but on export it will be 48 KHz 16 bit.

[Sir jon Tonnessen]

Hi.

I opened the wav-file in Adobe Audition and converted sample rate to 48kHz 32 bit audio.. But it’s still out of sync. It seems to fit the images if I slow down the video to about 99% speed… There must be a way to configure Premiere to 44100Hz and 16 bit?

[Harm Millaard]

It looks like you met your namesake.

[Mike Velte]

Did you drop any frames on video capture into Premiere?? This will cause the video to be slightly shorter than the audio and the audio to lag behind.

[Sir jon Tonnessen]

Zero dropped frames…
I believe the problem lies in the bitrate. But premiere won’t let me set up a project with 44100Hz and 16 bit audio. (which I find strange)

[Blast1]

[Nemesis] “But premiere won’t let me set up a project with 44100Hz and 16 bit audio. (which I find strange)”

Premiere is a DV editor, DV audio is 48khz,16bit or 32khz, 12bit, 44.1khz is a CD standard, you can convert it to 48khz,16bit but trying to sync video to a external source sometimes can be problematical as a slight freq difference in the recorders clock can make a time difference in long files, usually what I do is have one cam record a feed from the sound system so the audio is synced to the video from the start.

[Harm Millaard]

The DV spec says audio must be 48 KHZ. If you convert your audio to 48 KHz prior to importing into your project, not converting it when it is already imported, that may work. So, delete from your project, close PP, convert in another application, open PP, import the new audio file and put it in the TL.

[Sir jon Tonnessen]

I know that DV audio is 48kHz, but people rarely only use the audio from the DV recording. In this case I am editing a music video, and the CD standard is 44100Hz 16 bit audio.. So, if PP should be useful for lipsyncing CD audio this should be a preset as well…

And, I have opened my 44100Hz wav in adobe audition, resampled it to 48kHz, created a new PP project and imported wav – still out of sync…

[Bill King]

The audio played back during the video recording was likely
being clocked slightly off from what the rate on your computer
is interpreting it at. I mean to say that when you run the
same CD on 10 different stand alone players, you often get
10 different actual lengths. This is usually so small of an
issue within the length of a normal soundtrack that it is not
worth mentioning.

I shot about 1 hour of video of some dancers and then retained
the CD which was used for the live sound source. The venue
the dancers were at was so loud with extra noise I wanted to
put the original songs sound track over it. Well, by the end of
each ~ 4 minute song, the audio was out of sync by up to a 750
milliseconds, which is pretty noticable.

What I did was sync the audio in the front of the track, then
looked near the end of the track to figure how much the audio
was in error. I then took the track into Audtion and stretched
it the amount needed to make it line up. The small amount
needed did not cause any artifacts and it let me resample the
audio into 48KHz. Import that back into PPro and you should
be all lined up. It worked for me… I did it about 10 times
in that one DVD project.