7 Replies Latest reply on Jul 25, 2010 11:50 AM by the_wine_snob

    Audio advanced by 3 frames when rendered

    acmputr Level 1



      Thanx in advance for your help.

      I'm using CS5 Production Suite.

      Cameras are:

      Sony FX1000

      Sony AX2000

      Sony V1U

      Sony SR11

      Canon 7D


      Sequences are created using an XDCAM HD 1080 30p preset.


      I'm shooting live music videos & all videos are shot in 30P (most tracks at 1920 x 1080 with the FX1000 at 1440 x 1080, all at 48 Khz stereo).


      The H.264 preset has been slightly modified to render at 1280 x 720  30P, audio is shot and renedered at 48 Khz stereo.


      In the editing window things are synched perfectly.  When I export to an MP4 file using the H.264 preset the audio gets rendered out of synch advanced by 3 frames.  If I go into the editing window and delay the audio by 3 frames it renders the output file in perfect synch.  This is true for on-camera audio tracks, multi-camera edited audio tracks and for tracks with imported audio wave files produced in Cubase by the sound engineer.


      Can someone help me understand why this renders out of synch?