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  1. Hello,
    I'm importing an MP4 video into my Premier Pro/After Effects timeline and cannot get any audio track out of it.


    Information:
    The mp4 video does play audio playback on video-viewing programs (VLC WMP)
    The video is from someone who edited the clip, I need to re-edit it.

    What I've tried:
    Clearing Cache. (100% cleared along with new destination for memory cache)
    Exporting Audio only (mp3) from the file via Encoder CC. (Just produces a long silent audio file)
    Exporting Mp4 into H264 via Encoder CC: It produced no sound.

    PC Specs:
    i7700k @ 4.2GHZ
    16 GB Ram DDR4
    GPU: NVidia GTX 970

    Media Info:

    General
    Format : MPEG-4
    Format profile : Base Media / Version 2
    Codec ID : mp42 (mp41/mp42/isom)
    File size : 1.08 GiB
    Duration : 56 min 57 s
    Overall bit rate mode : Variable
    Overall bit rate : 2 727 kb/s
    Encoded date : UTC 2017-03-03 00:19:17
    Tagged date : UTC 2017-03-03 00:29:09
    IsTruncated : Yes


    Video
    ID : 2
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L3.1
    Format settings, CABAC : Yes
    Format settings, ReFrames : 2 frames
    Format settings, GOP : M=2, N=30
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Duration : 56 min 57 s
    Bit rate mode : Variable
    Bit rate : 4 997 kb/s
    Maximum bit rate : 768 kb/s
    Width : 1 280 pixels
    Height : 720 pixels
    Display aspect ratio : 16:9
    Frame rate mode : Constant
    Frame rate : 29.970 (30000/1001) FPS
    Original frame rate : 25.000 FPS
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.181
    Stream size : 1.99 GiB
    Title : Core Media Video
    Encoded date : UTC 2017-03-03 00:19:17
    Tagged date : UTC 2017-03-03 00:29:09
    Color range : Limited
    Color primaries : BT.709
    Transfer characteristics : BT.709
    Matrix coefficients : BT.709


    Audio
    ID : 1
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format profile : LC
    Codec ID : 40
    Duration : 56 min 57 s
    Source duration : 56 min 57 s
    Bit rate mode : Constant
    Bit rate : 128 kb/s
    Channel(s) : 2 channels

    Thank you!
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  2. As a workaround you could convert to PCM WAV and re-import the audio track separately

    Since VLC could play it, likely ffmpeg could decode and convert it. (I think VLC has ability to convert too) , or audacity with the ffmpeg plugin
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  3. Thank you @poisondeathray! Worked like a charm.
    Quote Quote  



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