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Activity Forums Compression Techniques Mpeg 2 video/audio export out of sync

  • Mpeg 2 video/audio export out of sync

    Posted by Raymond Tarry on March 2, 2010 at 3:50 am

    Hello, I’ve been encoding to NTSC Mpeg 2 video with audio and the result doesn’t sync up. I’ve been using the PCM setting for the audio. Is the another setting that would make them match up better?
    Thanks Raymond

    Raymond Tarry replied 16 years, 2 months ago 2 Members · 5 Replies
  • 5 Replies
  • Raymond Tarry

    March 2, 2010 at 3:52 am

    Oh, I’ve been using Procoder 3 – forgot to mention that – R

  • Daniel Low

    March 2, 2010 at 9:11 am

    What kind of MPEG stream are you creating? (PS, TS?)

    __________________________________________________________________
    Sent from my iPad Nano.

  • Raymond Tarry

    March 2, 2010 at 3:29 pm

    Hi Daniel. The Procoder Preset is MPEG 2-DVD-NTSC, and the description box says:
    MEPG 2, DVD, 720 X 480, 29.97fps, 6Mbps, NTSC, MPEG Video Stream + Wave File for DVD authoring software. (I’m not sure what you mean by PS or TS)

    The video setting is CBR and the audio is PCM. Premiere Pro 1.5 exports audio at a lower bitrate and I tried that in Procoder, but the result still didn’t match up with the video.

    Premiere Pro 1.5 also exports the audio and video synced and attached. I like the video output of Procoder better though.
    Thanks – Raymond

  • Daniel Low

    March 2, 2010 at 4:48 pm

    So you are creating Elementary streams – separate Video and Audio.

    As such, where are you playing these back and seeing the sync issues?

    __________________________________________________________________
    Sent from my iPad Nano.

  • Raymond Tarry

    March 3, 2010 at 2:49 am

    Yes, they are separate, but that was not my intention. Premiere Pro 1.5 always produces audio and video linked together.
    After exporting to Procoder 3 off the Premiere Pro timeline, I imported them back onto the PP timeline and lined up the video and audio and the audio strip was noticably longer than the video.
    I’m aware that Premiere Pro has a problem with MPEG 2, but you’d think that the strips would be the same length. (you can tell my knowledge is limited)

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