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  1. Hi!, i'm trying to stack two videos and play them at the same time, side by side. They also need some syncing.

    Webcam video info:
    Code:
    Video: Windows Media Video 9 720x576 30fps 936kbps [Raw Video 1]
    Audio: WMA 2 44100Hz stereo 64kbps [Raw Audio 0]
    
    General
    Complete name                  : C:\Users\MMedia\Desktop\xornada_r\bck\VConf_CNTG_LenguajeR_10102013_(Maņan)_[Video].wmv
    Format                         : Windows Media
    File size                      : 1.18 GiB
    Duration                       : 4h 2mn
    Overall bit rate mode          : Constant
    Overall bit rate               : 697 Kbps
    Maximum Overall bit rate       : 1 012 Kbps
    Encoded date                   : UTC 2013-10-11 15:19:02.761
    
    Video
    ID                             : 2
    Format                         : VC-1
    Format profile                 : MP@HL
    Codec ID                       : WMV3
    Codec ID/Info                  : Windows Media Video 9
    Codec ID/Hint                  : WMV3
    Description of the codec       : Windows Media Video 9
    Duration                       : 4h 2mn
    Bit rate mode                  : Constant
    Bit rate                       : 936 Kbps
    Width                          : 720 pixels
    Height                         : 576 pixels
    Display aspect ratio           : 5:4
    Frame rate                     : 29.970 fps
    Nominal frame rate             : 30.000 fps
    Color space                    : YUV
    Chroma subsampling             : 4:2:0
    Bit depth                      : 8 bits
    Scan type                      : Progressive
    Compression mode               : Lossy
    Bits/(Pixel*Frame)             : 0.075
    Stream size                    : 1.59 GiB
    Language                       : Spanish
    
    Audio
    ID                             : 1
    Format                         : WMA
    Format version                 : Version 2
    Codec ID                       : 161
    Codec ID/Info                  : Windows Media Audio
    Description of the codec       : Windows Media Audio 9.2 -  64 kbps, 44 kHz, stereo (A/V) 1-pass CBR
    Duration                       : 4h 2mn
    Bit rate mode                  : Constant
    Bit rate                       : 64.0 Kbps
    Channel(s)                     : 2 channels
    Sampling rate                  : 44.1 KHz
    Bit depth                      : 16 bits
    Stream size                    : 111 MiB (9%)
    Computer screen capture
    Code:
    Video: Flash Video 1 1024x768 15fps 8647kbps [V: flv, yuv420p, 1024x768, 8647 kb/s]
    
    General
    Complete name                  : C:\Users\MMedia\Desktop\xornada_r\bck\VConf_CNTG_LenguajeR_10102013_(Maņan)__[DatosVNC].flv
    Format                         : Flash Video
    File size                      : 973 MiB
    Duration                       : 4h 15mn
    Overall bit rate               : 533 Kbps
    
    Video
    Format                         : Sorenson Spark
    Codec ID                       : 2
    Duration                       : 4h 15mn
    Bit rate                       : 8 445 Kbps
    Width                          : 1 024 pixels
    Height                         : 768 pixels
    Display aspect ratio           : 4:3
    Frame rate mode                : Constant
    Frame rate                     : 1 000.000 fps
    Bit depth                      : 8 bits
    Bits/(Pixel*Frame)             : 0.011
    Stream size                    : 15.1 GiB
    As you can see both videos are completly different (i don't want to mention the person who recorded them with those formats.... sigh). The first is a webcam recording from someone speaking and the other one is a capture of the computer screen with a presentation.

    And this is my Avisynth script at the moment on MeGUI:

    Code:
    global MeGUI_darx = 8
    global MeGUI_dary = 3
    
    input1="video.wmv"
    DirectShowSource(input1)
    LanczosResize(768,576)
    ConvertToYV12
    duration=0
    a=Trim(round(duration*FrameRate),0)
    
    input2="video.flv"
    DirectShowSource(input2)
    LanczosResize(768,576)
    ConvertToYV12
    duration=725
    b=Trim(round(duration*FrameRate),0)
    
    StackHorizontal(a,b)
    The reason about Trim is becaused i need to sync them, and since the .flv one starts about 725sec (12min and 5 seconds) sooner i just cut the beginning.

    I'm also encoding the final video to mp4 (H264).

    So far, i achieved my goal but there is a problem, and i guess it is related to the FPS difference (30 on the .wmv vs 15 on the .flv) on the conversion, on the final video, the "b" video plays 2x faster.

    I can't figure how to fix this, i know about ConvertFPS but don't know how it can be used here. Maybe i should encode both videos separately first to match the fps with the next script?:

    Code:
    DirectShowSource("NTSC_clip.avi")  
    Bob(height=576)    
    LanczosResize(768,576)  
    ConvertFPS(50) 
    SeparateFields.SelectEvery(4,0,3)
    Weave
    Thanks!
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