VideoHelp Forum
+ Reply to Thread
Results 1 to 4 of 4
Thread
  1. why when i mux avc1 and ac3 with avidemux into avi container there is audio delay about 150 ms?
    they are not separate files. i cut it from mkv file.
    mediainfo:
    General
    Complete name : C:\Users\User\Desktop\8.avi
    Format : AVI
    Format/Info : Audio Video Interleave
    File size : 125 MiB
    Duration : 3mn 24s
    Overall bit rate : 5 097 Kbps

    Video
    ID : 0
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L4.1
    Format settings, CABAC : Yes
    Format settings, ReFrames : 8 frames
    Codec ID : AVC1
    Duration : 3mn 24s
    Bit rate : 4 435 Kbps
    Width : 1 280 pixels
    Height : 534 pixels
    Display aspect ratio : 2.40:1
    Frame rate : 23.976 fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.271
    Stream size : 108 MiB (87%)

    Audio
    ID : 1
    Format : AC-3
    Format/Info : Audio Coding 3
    Mode extension : CM (complete main)
    Format settings, Endianness : Big
    Codec ID : 2000
    Duration : 3mn 24s
    Bit rate mode : Constant
    Bit rate : 640 Kbps
    Channel(s) : 6 channels
    Channel positions : Front: L C R, Side: L R, LFE
    Sampling rate : 48.0 KHz
    Bit depth : 16 bits
    Compression mode : Lossy
    Stream size : 15.6 MiB (13%)
    Alignment : Aligned on interleaves
    Interleave, duration : 32 ms (0.77 video frame)
    maybe it is because avi not good container for h264?

    does "Interleave, duration" in mediainfo show audio delay? if it does then it shows that wrong. i don't want to shift audio visually beacuse i want it's original synchronization. is there another tool that shows audio delay?
    Quote Quote  
  2. I'm a MEGA Super Moderator Baldrick's Avatar
    Join Date
    Aug 2000
    Location
    Sweden
    Search Comp PM
    Why do you need an avi? MKV and MP4 is much better for avc/h264 and ac3.
    Quote Quote  
  3. I assume MediaInfo doesn't show any audio delay for the original MKV? (you posted the info for the AVI) How dd you "cut it" from the MKV?

    Even if you can't work out why it's happening, you should be able to apply a 150ms delay to the audio when muxing.
    Quote Quote  
  4. Originally Posted by Baldrick View Post
    Why do you need an avi? MKV and MP4 is much better for avc/h264 and ac3.
    sony vegas imports only when it is muxed into avi container(in avidemux). can hardware be the reason of out of sync?(intel core i5-2450m 2.50ghz, 4gb ram, nvidia geforce gt 520m)
    Last edited by chazz spacey; 26th Sep 2014 at 11:38.
    Quote Quote  
Visit our sponsor! Try DVDFab and backup Blu-rays!