Converted .avi to .m4v - No sound on ATV2

Discussion in 'Apple TV and Home Theater' started by kbutler84, Jul 13, 2011.

  1. kbutler84 macrumors regular

    Joined:
    Jun 26, 2011
    #1
    I converted an .avi to .m4v using MKVTools. I checked the file with VLC after conversion and it was fine (but didn't check in iTunes). Now when I play via ATV2 or iTunes, I get video but no sound.

    Here is the log from MediaInfo:

    General
    Complete name : /Volumes/2TB External HDD/iTunes Movies and TV/ESPN 30 For 30/01 - Kings Ransom.avi.m4v
    Format : MPEG-4
    Codec ID : M4V
    File size : 563 MiB
    Duration : 50mn 15s
    Overall bit rate : 1 566 Kbps
    Movie name : Kings Ransom
    Track name/Position : 1
    Track name/Total : 0
    Performer : ESPN 30 For 30
    Encoded date : UTC 2011-07-12 13:19:17
    Tagged date : UTC 2011-07-13 22:07:28
    Cover : Yes
    tvsh : ESPN 30 For 30
    tven : SE01
    tves : 1
    sosn : ESPN 30 for 30
    desc : The 1988 trade of Wayne Gretzky from the Edmonton Oilers to the Los Angeles Kings and the effect it had on Gretzky, the fans in Edmonton, and the popularity of hockey in Southern California.
    pcst : 0
    hdvd : 1
    stik : 10
    rtng : 0
    akID : 0
    sfID : 0
    atID : 0
    plID : 0
    geID : 0
    iTunMOVI : <?xml version="1.0" encoding="UTF-8"?> / <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> / <plist version="1.0"> / <dict> / <key>cast</key> / <array/> / <key>codirectors</key> / <array/> / <key>directors</key> / <array/> / <key>producers</key> / <array/> / <key>screenwriters</key> / <array/> / </dict> / </plist>

    Video
    ID : 1
    Format : MPEG-4 Visual
    Format profile : Simple@L3
    Format settings, BVOP : No
    Format settings, QPel : No
    Format settings, GMC : No warppoints
    Format settings, Matrix : Default (H.263)
    Codec ID : 20
    Duration : 50mn 14s
    Bit rate mode : Variable
    Bit rate : 1 500 Kbps
    Maximum bit rate : 2 738 Mbps
    Width : 1 280 pixels
    Height : 720 pixels
    Display aspect ratio : 16:9
    Frame rate mode : Variable
    Frame rate : 24.946 fps
    Original frame rate : 25.000 fps
    Minimum frame rate : 2.273 fps
    Maximum frame rate : 25.000 fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Compression mode : Lossy
    Bits/(Pixel*Frame) : 0.065
    Stream size : 539 MiB (96%)
    Title : /Users/Butler/Desktop/ESPN 30 For 30/01 - Kings Ransom.avi#1 - Imported with GPAC 0.4.6-DEV (internal rev. 6)
    Encoded date : UTC 2011-07-12 13:19:17
    Tagged date : UTC 2011-07-12 13:19:55

    Audio
    ID : 2
    Format : MPEG Audio
    Format version : Version 1
    Format profile : Layer 3
    Mode : Joint stereo
    Mode extension : MS Stereo
    Codec ID : 6B
    Duration : 50mn 15s
    Bit rate mode : Constant
    Bit rate : 64.0 Kbps
    Channel(s) : 2 channels
    Sampling rate : 48.0 KHz
    Compression mode : Lossy
    Stream size : 23.0 MiB (4%)
    Title : /Users/Butler/Desktop/ESPN 30 For 30/01 - Kings Ransom.avi#2:lang=unknown - Imported with GPAC 0.4.6-DEV (internal rev. 6)
    Writing library : LAME3.96.1
    Encoded date : UTC 2011-07-12 13:19:52
    Tagged date : UTC 2011-07-12 13:19:55
     
  2. slothrob macrumors 6502

    Joined:
    Jun 12, 2007
    #2
    It looks like you included an MP3 track, not an AAC audio track. That's the problem.
     
  3. spacepower7 macrumors 68000

    Joined:
    May 6, 2004
    #3
    I agree.

    A m4v should not have an mp3 soundtrack if you want to use it on Apple devices. It probably will play fine on the Mac with perian or VLC but I'm not sure but I don't think the official mp4 (m4v) format includes/endorses a mp3 format soundtrack.

    Pull the current m4v file back into MKVTools and just convert the audio to 2 channel aac, set the video to pass thru. This conversion will be much shorter than the original video conversion that you already did.
     
  4. kbutler84 thread starter macrumors regular

    Joined:
    Jun 26, 2011
    #4
    Perfect! Thank you both.
     
  5. staeit macrumors member

    Joined:
    Jul 4, 2011
    #5
    This tool should do all the necessary conversion you want... Automatically. The only thing I don't like is how it handles subtitles. The rest of its operation is flawless
     
  6. kbutler84 thread starter macrumors regular

    Joined:
    Jun 26, 2011
    #6
    Does it allow batch converting? I'm using an unregistered version of MKVTools, and it forces me to convert one file at a time.
     
  7. staeit macrumors member

    Joined:
    Jul 4, 2011
    #7
    Yes it does. You select a directory and it scans that directory for all files that can possibly be converted (*.avi and *.mkv). It then lets you check each file individually, or all files.

    I downloaded an entire series of a TV show with an h264 stream and aac sound (no conversion/transcoding necessary) - 10 seasons, and it took like an hour to do all of them.
     

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