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F31911627hlee
Known Participant
August 27, 2023
Question

20 milliseconds delay

  • August 27, 2023
  • 2 replies
  • 7185 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

    R
    Community Expert
    Richard M KnightCommunity Expert
    Community Expert
    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.

      F
      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?

      Remote Index
      Remote Index
      August 28, 2023

      Well, I think I don't understand it at all. I have a video and a audio. I select milliseconds instead audio samples. Forget frames language, please. Even I don't do anything, I see that character mouth opens at 00:04:38.194. I close Premiere. When I open it again e select the same scene. Character mouth now opens at 00:04:38.154. I didn't nothing. I just think character mouth should open at 00:04:38.194. But this time changes depending on the time I open the software.


      Hello F31911627hlee, I am sorry you have not found this more helpful.

       

      "Forget frames language, please."

       

      The thing is that you are talking about a video frame when you say "I see that character mouth opens." That's a video frame. So video frames are part of the discussion.

       

      You are correct in assuming that clips should not move in the timeline if you have not touched them.

       

      My inquiries above were to try to clarify the situation you are trying to describe (which remains unclear to me).

       

      I have further ideas about how to problem-solve this. Let me know if you are interested.

       

      R.

        F
        F31911627hleeAuthor
        Known Participant
        August 27, 2023

        https://ibb.co/3fR3hyL

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