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J
jt1972
Participant
March 4, 2021
Question

Audio Goes Out of Sync When Exported on Premiere Pro 15.1.0 build 18 (M1)

  • March 4, 2021
  • 2 replies
  • 538 views

At least H254 and H265 exports has this issue. On long exports over 60 min Audio is clearly out of sync.

 

With QT ProPres exports seems to be OK.

 

Tested with 1080P50 footage and export.

 

Please fix this issue ASAP.

 

This topic has been closed for replies.

2 replies

mattchristensen
mattchristensen
Legend
March 5, 2021

@jt1972 I'm not seeing this happen on my end. I created a 66 minute timeline and exported it and there was no sync drift. I then took that exported 66 min clip into a new timeline and exported it again, in case the problem is with long clips. I also see no sync drift in that export.

 

Could you tell me what kind of footage and audio formats you're using? A screenshot of your timeline or sending a copy of your project (without media) could also help get to the bottom of this. Thanks!

    J
    jt1972Author
    Participant
    March 7, 2021

    Hi!

     

    The Timeline is DSLR 1920x1080 with 50 fps timebase

     

    Here is info about the files on timeline:

     

    File Path: /Volumes/UNTITLED/Capture0000.mov
    Type: QuickTime Movie
    File Size: 129,62 GB
    Image Size: 1920 x 1080
    Frame Rate: 50,00
    Source Audio Format: 48000 Hz - 24-bit - Stereo
    Project Audio Format: 48000 Hz - 32 bit floating point - Stereo
    Total Duration: 01:16:51:43
    Pixel Aspect Ratio: 1,0
    Alpha: None
    Color Space: Rec. 709
    Color Space Override: Off
    Input LUT: None

    QuickTime Details:
    Movie contains 1 video track(s), 1 audio track(s), 0 closed caption track(s), and 0 timecode track(s).

    Video:
    There are 230593 frames with a duration of 1/50th.

    Video track 1:
    Duration is 1:16:51:43
    Average frame rate is 50,01 fps

    Video track 1 contains 1 type(s) of video data:

    Video data block #1:
    Frame Size = 1920 x 1080
    Compressor = Apple ProRes 422
    Quality = Most (5,00)

    Audio:
    Audio track 1 contains 1 type(s) of audio data:

    Audio data block #1:
    Format = 24 bit - Stereo
    Rate = 48000 Hz
    Compressor = in24

     

     

     

    File Path: /Volumes/UNTITLED/Capture0001.mov
    Type: QuickTime Movie
    File Size: 59,15 GB
    Image Size: 1920 x 1080
    Frame Rate: 50,00
    Source Audio Format: 48000 Hz - 24-bit - Stereo
    Project Audio Format: 48000 Hz - 32 bit floating point - Stereo
    Total Duration: 00:34:08:37
    Pixel Aspect Ratio: 1,0
    Alpha: None
    Color Space: Rec. 709
    Color Space Override: Off
    Input LUT: None

    QuickTime Details:
    Movie contains 1 video track(s), 1 audio track(s), 0 closed caption track(s), and 0 timecode track(s).

    Video:
    There are 102437 frames with a duration of 1/50th.

    Video track 1:
    Duration is 0:34:08:37
    Average frame rate is 50,01 fps

    Video track 1 contains 1 type(s) of video data:

    Video data block #1:
    Frame Size = 1920 x 1080
    Compressor = Apple ProRes 422
    Quality = Most (5,00)

    Audio:
    Audio track 1 contains 1 type(s) of audio data:

    Audio data block #1:
    Format = 24 bit - Stereo
    Rate = 48000 Hz
    Compressor = in24

     

    When the exported timeline is viewed with media player the sound is heard before the events occur on the video.

     

     

    J
    jt1972Author
    Participant
    March 8, 2021

    Noticed that if the exported file is inported to Premiere then the audio is in sync but not when the file is played thru VLC and QuickTime player

    J
    jt1972Author
    Participant
    March 5, 2021

    Any news on this?

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