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  1. el nino
    Join Date: Jan 2014
    Location: India
    Search Comp PM
    I just Hard sub a video by using Format factory. I am using Ageisub for subtitles and for hard subs, format factory. Everything was going perfect before, but suddenly i got a video, in which video speed increases too much, like fast forwarding and it is completely out of sync with the audio.

    Just want to know the reason for this and how can i resolve this issue.

    Thanks!
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  2. I'm a MEGA Super Moderator Baldrick's Avatar
    Join Date: Aug 2000
    Location: Sweden
    Search Comp PM
    Post the details from the video source. Use mediainfo, open video, change to view->text and copy everything.

    It might for example be variable frame rate.
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  3. el nino
    Join Date: Jan 2014
    Location: India
    Search Comp PM
    General
    Complete name : video pumping.mp4
    Format : MPEG-4
    Format profile : Base Media / Version 2
    Codec ID : mp42
    File size : 216 MiB
    Duration : 46mn 21s
    Overall bit rate : 651 Kbps
    Encoded date : UTC 2014-01-27 10:45:24
    Tagged date : UTC 2014-01-27 10:45:24
    gsst : 0
    gstd : 3527806
    gssd : B4A7DD745HH1391069913833944
    gshh : r5---sn-a5m7zu7s.googlevideo.com

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : Baseline@L2.1
    Format settings, CABAC : No
    Format settings, ReFrames : 1 frame
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Duration : 46mn 21s
    Bit rate mode : Variable
    Bit rate : 552 Kbps
    Maximum bit rate : 1 855 Kbps
    Width : 480 pixels
    Height : 360 pixels
    Display aspect ratio : 4:3
    Frame rate mode : Constant
    Frame rate : 25.000 fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.128
    Stream size : 183 MiB (85%)
    Tagged date : UTC 2014-01-27 10:45:40

    Audio
    ID : 2
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format profile : LC
    Codec ID : 40
    Duration : 46mn 21s
    Bit rate mode : Variable
    Bit rate : 96.0 Kbps
    Maximum bit rate : 103 Kbps
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 44.1 KHz
    Compression mode : Lossy
    Stream size : 31.8 MiB (15%)
    Title : IsoMedia File Produced by Google, 5-11-2011
    Encoded date : UTC 2014-01-27 10:45:33
    Tagged date : UTC 2014-01-27 10:45:40
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  4. el nino
    Join Date: Jan 2014
    Location: India
    Search Comp PM
    General
    Complete name : video pumping.mp4
    Format : MPEG-4
    Format profile : Base Media / Version 2
    Codec ID : mp42
    File size : 216 MiB
    Duration : 46mn 21s
    Overall bit rate : 651 Kbps
    Encoded date : UTC 2014-01-27 10:45:24
    Tagged date : UTC 2014-01-27 10:45:24
    gsst : 0
    gstd : 3527806
    gssd : B4A7DD745HH1391069913833944
    gshh : r5---sn-a5m7zu7s.googlevideo.com

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : Baseline@L2.1
    Format settings, CABAC : No
    Format settings, ReFrames : 1 frame
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Duration : 46mn 21s
    Bit rate mode : Variable
    Bit rate : 552 Kbps
    Maximum bit rate : 1 855 Kbps
    Width : 480 pixels
    Height : 360 pixels
    Display aspect ratio : 4:3
    Frame rate mode : Constant
    Frame rate : 25.000 fps
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.128
    Stream size : 183 MiB (85%)
    Tagged date : UTC 2014-01-27 10:45:40

    Audio
    ID : 2
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format profile : LC
    Codec ID : 40
    Duration : 46mn 21s
    Bit rate mode : Variable
    Bit rate : 96.0 Kbps
    Maximum bit rate : 103 Kbps
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 44.1 KHz
    Compression mode : Lossy
    Stream size : 31.8 MiB (15%)
    Title : IsoMedia File Produced by Google, 5-11-2011
    Encoded date : UTC 2014-01-27 10:45:33
    Tagged date : UTC 2014-01-27 10:45:40
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  5. Member
    Join Date: Sep 2012
    Location: Australia
    Search Comp PM
    What happens further on in the file? Do the Audio and Video both end at the same time?

    It's possible the frame-rate is wrong, either in the container or the original stream.
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  6. That's happened to me before and while I never worked out exactly why, it seemed to be something to do with the audio sampling rate and the player getting it wrong.

    Try using a program such as MyMP4BoxGUI or MKVMergeGUI to resave the encoded video without any audio. If the new file plays okay (the video plays at normal speed) the audio needs fixing.
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  7. el nino
    Join Date: Jan 2014
    Location: India
    Search Comp PM
    Whole file is of length 58:43, but length reduces to 46:24. During this, video plays till end with fast speed, but audio stops at 46:24. Whole file is like this. Video plays so quickly and audio plays normal.
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  8. Member
    Join Date: Sep 2012
    Location: Australia
    Search Comp PM
    (58 * 60) + 43 = 3523 Seconds

    3523 * 25 = 88075 Frames

    88075 / 30 = 2935.8 Seconds

    2935.8 / 60 = ~48 Minutes...

    The source you encoded from didn't happen to be NTSC did it?
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  9. Member
    Join Date: Sep 2012
    Location: Australia
    Search Comp PM
    I can get it closer to 46 Minutes if I use 24fps, it may just be a coincidence though.

    I believe Hello_Hello said the audio default duration may be off (which is the equivalent of video frame rate). Try what he said.

    If you put them into Matroska containers you can fiddle with the default durations all you like through MKVPropEdit or the mmg header editor, you may be able to fix it that way.
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  10. Member
    Join Date: Sep 2012
    Location: Australia
    Search Comp PM
    My current theory goes that his video was sourced from an NTSC DVD that was encoded as 23.976fps with soft 3-2 pull-down and somehow during the conversion process the software got the pre and post pull-down frame-rates confused. Of course I'll never know, but I have to say it.
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  11. Member
    Join Date: Mar 2008
    Location: United States
    Search Comp PM
    Can you post a sample of the video? Then we can find out what it really is.
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