Audio track synch is different depending on when I begin preview

tonycog

Newbie Joined: May 23, 2011 22:52 Messages: 41 Offline

Solved by

Aug 29, 2011 12:33

Hello
I am working on my first PD9 video project. I have, up to now, about 20 JPEG still photos that I have synched to music. (More photos and video will be added later.)

When I preview from the very beginning I get the synch between photo and video that I want. However, when I preview beginning later in the video, say beginning with the 6th photo for example, the synch between photo and music is off by about 2 full seconds. It seems that when beginning a preview from within the video rather than from the beginning, the software "loses track" of where it is in the music.

Can anyone please help me to understand why this is and how to correct it?

Thank you,
Tony

Berto2002

Member Location: Southend-on-Sea, UK Joined: May 23, 2010 04:16 Messages: 74 Offline

Aug 29, 2011 13:17

I believe you have used an audio file with a variable bitrate. PD cannot interpret these properly in preview. Did you download it from Amazon? All the ones I get from there have this problem. You need to convert it to a fixed bitrate. I use Format Factory (http://www.formatoz.com/). In the settings make sure the bitrate is set to, say 128, rather than default and it will, in seconds, create a fixed bitrate audio MP3 file. When you import this you will get the sync right regardless of where you preview from. AMD Phenom II X6 1100XT
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tonycog

Newbie Joined: May 23, 2011 22:52 Messages: 41 Offline

Aug 29, 2011 23:16

Thanks for the suggestion. The music did not come from Amazon. I checked, and according to ITunes the bitrate is 128 and appears to be fixed. There are other mp3 files that ITunes says are variable, but not this one.

I converted it to a constant bit rate of 320 and each time that I tried to add the converted 320 bitrate mp3 into my audio track it would crash Power Director. I'm going to convert it to 128 even though it appears to already be a fixed bitrate and see what happens.

Any other ideas, anybody?

Thanks again,
Tony