Forums
in > Search
Welcome to Pinnacle Systems - Forums Sign in | Join | Help

Audio Sync

Last post 03-09-2022, 18:38 by jjn. 13 replies.
Sort Posts: Previous Next
  •  03-06-2022, 16:13 820849

    Audio Sync

    Hi  

     I'm having an issue with audio sync while editing in PS25.  I have recorded a local theatre production, with the sound recorded separately as a WAV file.  I have to use a couple of sections from different performances so need to edit the thing together. 

    When in the edit window the video and audio was in sync initially but now when I play back on the timeline there is a delay between the video and audio.   When I export all is OK so it is just in the editor.  Any ideas how I can restore the sync in the editor?

     

    Mark 

  •  03-07-2022, 3:17 820857 in reply to 820849

    Re: Audio Sync

    The fact that you can export sucessfully seems to indicate this is a performance issue, but check the following:

    What is the video source? I'm assuming it is a fixed frame rate, and not variable (phone/webcam)?

    If you clear the render files, does the OOS still happen (or can't you play the timeline back smoothly enough to tell?

    When you play back the timeline now, is the delay fixed or does the OOS get worse over time?

    Which way round is the delay? Is the sound late or early?

     

  •  03-07-2022, 3:30 820858 in reply to 820857

    Re: Audio Sync


    Hi Jeff

    Video source is AVCHD 1920x1080 25 frames per second, bit rate constant from an AVCHD camcorder.

    Clearing the render files doesn't seem to help - once I have waited for the background render to be done again, the delay is still there.

    The delay seems to be fixed rather than getting worse

    The sound is later than the video

    Thanks

    Mark 

     

  •  03-07-2022, 13:38 820865 in reply to 820858

    Re: Audio Sync

    This is an odd one Mark. If you turn off rendering and delete the render files is is the timeline in sync?
  •  03-07-2022, 13:39 820866 in reply to 820865

    Re: Audio Sync

    Oh - and have you put any effects on the audio track - eq, reverb, noise reduction?
  •  03-07-2022, 13:43 820867 in reply to 820866

    Re: Audio Sync

    Mark,

    Would you give a shot of Mediainfo to these audio files and post the result of its tree view here ?

    Let see if we can find something odd in these files.

  •  03-07-2022, 17:02 820876 in reply to 820867

    Re: Audio Sync

    I've actually sorted it for now by copying all the tracks on the timeline and pasting into a new project.

    Will still respond with the other information when I get the chance though.  Thanks 

  •  03-07-2022, 17:19 820877 in reply to 820866

    Re: Audio Sync

    jjn:
    Oh - and have you put any effects on the audio track - eq, reverb, noise reduction?

    Some equalisation correction

  •  03-07-2022, 17:24 820878 in reply to 820867

    saby:

    Mark,

    Would you give a shot of Mediainfo to these audio files and post the result of its tree view here ?

    Let see if we can find something odd in these files.


  •  03-07-2022, 17:26 820879 in reply to 820878

    MHargreaves:
    saby:

    Mark,

    Would you give a shot of Mediainfo to these audio files and post the result of its tree view here ?

    Let see if we can find something odd in these files.


  •  03-09-2022, 9:01 820929 in reply to 820879

    Re: Audio Sync

    Looks normal to me Yann?

    Mark - doesn removing the EQ fix it?

  •  03-09-2022, 10:24 820930 in reply to 820929

    Re: Audio Sync

    Yes. To me too, except Audio sampling rates that are different. 
  •  03-09-2022, 12:00 820933 in reply to 820929

    Re: Audio Sync

    jjn:

    Looks normal to me Yann?

    Mark - doesn removing the EQ fix it?

      I should have thought about that but it wasn't obvious that EQ was applied as the green line wasn't being displayed.

    I removed the EQ and that did fix it.  I've reapplied it and it still seems to be in sync so all good for now.  Thank you.
  •  03-09-2022, 18:38 820938 in reply to 820933

    Re: Audio Sync

    Thanks for reporting back :-)
View as RSS news feed in XML
Copyright © 2012 Corel, Inc.. Terms of Use | Privacy Policy