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  1. I have captured a number of DV tapes using my Macbook Air via the firewire interface and I am wanting to convert/compress them into mp4 files to share online. I have copied the files to my Windows PC and have tried using Hybrid with default settings to convert them but I am getting an issue with the audio.

    The audio seems to be stretching out to double the length of the original clip. If I do the conversion without audio the video file is the correct length but if I add audio, the file runs for twice the length but the video is running at normal speed but stops halfway through and the audio is running half speed.

    Is there some settings I can change to fix this?

    TIA

    Here are the file details from MediaInfo:

    General
    Complete name : C:\Users\xxxxxx\Documents\1999-03-29 19_59_40-1.mov
    Format : MPEG-4
    Commercial name : DVCAM
    Format profile : QuickTime
    Codec ID : qt 0000.00 (qt )
    File size : 1.31 GiB
    Duration : 6 min 4 s
    Overall bit rate : 30.9 Mb/s
    Frame rate : 25.000 FPS
    Recorded date : 1999-03-29 19:59:40.000
    Encoded date : 2023-05-21 10:39:33 UTC
    Tagged date : 2023-05-21 10:45:38 UTC
    Writing library : Apple QuickTime
    com.apple.quicktime.make : Apple
    com.apple.quicktime.model : MacBookAir6,1
    com.apple.quicktime.software : macOS 11.7.7 (20G1345)
    com.apple.quicktime.creationdate : 2023-05-21T11:32:40+0100

    Video
    ID : 1
    Format : DV
    Commercial name : DVCAM
    Codec ID : dvcp
    Duration : 6 min 4 s
    Source duration : 6 min 4 s
    Bit rate mode : Constant
    Bit rate : 24.4 Mb/s
    Width : 720 pixels
    Clean aperture width : 703 pixels
    Height : 576 pixels
    Clean aperture height : 576 pixels
    Display aspect ratio : 4:3
    Original display aspect ratio : 4:3
    Clean aperture display aspect ratio : 4:3
    Frame rate mode : Constant
    Frame rate : 25.000 FPS
    Standard : PAL
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Interlaced
    Scan type, store method : Interleaved fields
    Scan order : Bottom Field First
    Compression mode : Lossy
    Bits/(Pixel*Frame) : 2.357
    Time code of first frame : 00:00:00:07
    Time code source : Subcode time code
    Stream size : 1.22 GiB (93%)
    Source stream size : 1.22 GiB (93%)
    Title : Core Media Video
    Encoded date : 2023-05-21 10:39:33 UTC
    Tagged date : 2023-05-21 10:45:38 UTC
    Color primaries : BT.601 PAL
    Transfer characteristics : BT.709
    Matrix coefficients : BT.601

    Audio #1
    ID : 3
    Format : PCM
    Format settings : Little / Signed
    Codec ID : lpcm
    Duration : 6 min 4 s
    Source duration : 6 min 4 s
    Bit rate mode : Constant
    Bit rate : 2 048 kb/s
    Channel(s) : 4 channels
    Channel layout : L R L R
    Sampling rate : 32.0 kHz
    Bit depth : 16 bits
    Stream size : 89.1 MiB (7%)
    Source stream size : 89.0 MiB (7%)
    Title : Core Media Audio
    Encoded date : 2023-05-21 10:39:33 UTC
    Tagged date : 2023-05-21 10:45:38 UTC

    Audio #2
    ID : 1-0
    Format : PCM
    Format settings : Big / Signed
    Muxing mode : DV
    Muxing mode, more info : Muxed in Video #1
    Duration : 6 min 4 s
    Bit rate mode : Constant
    Bit rate : 768 kb/s
    Channel(s) : 2 channels
    Sampling rate : 32.0 kHz
    Bit depth : 12 bits
    Stream size : 33.4 MiB (2%)

    Audio #3
    ID : 1-1
    Format : PCM
    Format settings : Big / Signed
    Muxing mode : DV
    Muxing mode, more info : Muxed in Video #1
    Duration : 6 min 4 s
    Bit rate mode : Constant
    Bit rate : 768 kb/s
    Channel(s) : 2 channels
    Sampling rate : 32.0 kHz
    Bit depth : 12 bits
    Stream size : 33.4 MiB (2%)

    Other
    ID : 2
    Type : Time code
    Format : QuickTime TC
    Duration : 6 min 4 s
    Bit rate mode : Constant
    Frame rate : 25.000 FPS
    Time code of first frame : 00:00:00:07
    Time code of last frame : 00:06:00:07
    Time code, stripped : No
    Title : Core Media Time Code
    Default : No
    Encoded date : 2023-05-21 10:39:33 UTC
    Tagged date : 2023-05-21 10:45:38 UTC
    Quote Quote  
  2. Member
    Join Date
    Mar 2021
    Location
    Israel
    Search Comp PM
    If the videos play well in your PC after you copy them, then perhaps Hybrid is not the best software to do the conversion.
    Try to test a different one like HD Video Converter they have free trial to use. You need to convert *.mov to *.mp4 , right?
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  3. Yes the videos play fine on the PC. Iíll have a look at HD Video Converter but as Iíve got hours of video to convert I was wanting something free.
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  4. Member
    Join Date
    Mar 2021
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    Israel
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    Originally Posted by mcb7 View Post
    Yes the videos play fine on the PC. Iíll have a look at HD Video Converter but as Iíve got hours of video to convert I was wanting something free.
    HD Video Converter (WonderFox HD Video Converter Factory) is not only a converter but also a great downloader.
    I think I paid only $10-$15 for it with discount few years ago.
    But first thing try it and see if it is good for you.
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  5. Member
    Join Date
    May 2005
    Location
    Australia-PAL Land
    Search Comp PM
    Handbrake. It's free and does batching.
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  6. Capturing Memories dellsam34's Avatar
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    Jan 2016
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    Member Since 2005, Re-joined in 2016
    Search PM
    You should have captured your DVCAM tapes into DV-AVI not .mov, Not a lot of software can work with that weird format especially when the audio is 32Khz/12bit. If you can re-transfer your tapes you can avoid few lossy conversions.
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  7. Member Cornucopia's Avatar
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    Oct 2001
    Location
    Deep in the Heart of Texas
    Search PM
    Except, capturing via a Mac, the container will almost ALWAYS be mov (or its cousin mp4), because that is the native format of the OS.
    ( Certain pro proprietary systems can cap to DV in mxf, and systems based on ffmpeg could conceivably use other formats).


    Scott
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  8. Capturing Memories dellsam34's Avatar
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    Jan 2016
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    Member Since 2005, Re-joined in 2016
    Search PM
    Yes, that's why Mac is not recommended for this kind of tasks, It's a closed ecosystem, It requires everyone on the planet to have a Mac to be issue free.
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  9. Member
    Join Date
    May 2005
    Location
    Australia-PAL Land
    Search Comp PM
    Originally Posted by Dellsham
    If you can re-transfer your tapes you can avoid few lossy conversions.
    That's not necessary. All they want to do is convert DV to MP4. I'll bet there's dozens of converter programs that will do it. And they're not doing "few lossy conversions".

    I gave up on Hybrid. The interface is complex and there was always something in a nook and cranny somewhere that tripped up what I was trying to do. In the right hands it's probably good but it is not user-friendly.
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