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F31911627hlee
Known Participant
August 27, 2023
Question

20 milliseconds delay

  • August 27, 2023
  • 2 replies
  • 7125 views

Hi, friends. I use Premiere to synchronize audio and video (.avi) and I love this software, but there's a thing bothering me. I noted the sometimes a frame suffers a time variation of 20 milliseconds. The difference is always 20 milliseconds! For example: Before to repair the audio synchronization, I select a frame that begins at 00:03:11:43200. After I synchronize that and several others parts, I return to "frame 00:03:11:43200" in order to see it again, but, now, the same frame begins at 00:03:11:41200! I would like to know why it happens and if is there a way to avoid that variation, since it destroys the confidence on lipsync. Should I use mp4 intead avi?

[url=https://ibb.co/3fR3hyL][img]https://i.ibb.co/3fR3hyL/Adobe-Premiere-Sy.jpg[/img][/url]

Thank you very much in advance.

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    2 replies

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    Richard M Knight
    Inspiring
    August 27, 2023

    It looks like you are working with Audio units, there is a good chance Premiere is going to the nearest viseo frame.

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      F31911627hleeAuthor
      Known Participant
      August 27, 2023

      I don't understand it. When I revisit  the same frame several times as I continue fixing other parts, it can return to normal or no. I would like to know a way to stop it, since I can't be sure about the timing. If I set some audio 5 miliseconds after the mouth opens, for example, and the same frame now starts 20 miliseconds earlier, sound will be produced 15 miliseconds before the mouth opening. And, sometimes, it returns to original timing when I revisit it. I have no confidence to do the job anymore. Do you have any solution?

      F
      F31911627hleeAuthor
      Known Participant
      September 1, 2023

      I would set the timecode type to match the timecode in the sequence settings.

       

      To check audio sync in your system add one frame of the built in bars and tone effect

      and repeat it every second, play the timeline and see if  the sync look right,

       


      Well, I think the problem continues even when I tried bars and tone effect. I disabled audio units and used frames.

      For example, a certain frame begins at frame 209. Almost ever I move to 209, I can hear the sound. but, after I did it 8 times, when I move to 209, it did not whistle. The sound came out at frame 210. After repeat it, sound appeared at frame 209 again. I really have no idea. I installed the Premiere 2023, but this variation continued. Maybe I shoulnd uninstall Premiere 2020 and install Premiere 2023 from from scratch...

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      F31911627hleeAuthor
      Known Participant
      August 27, 2023

      https://ibb.co/3fR3hyL

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