MPEG4

Discussion in 'DivX / XviD' started by jack3216, Oct 19, 2006.

  1. jack3216

    jack3216 Member

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    I have a avi video i downloaded i need to convert to MPEG4 excuse my ignorance but could someone explain how to do this
     
    jack3216, Oct 19, 2006
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  2. celtic_d

    celtic_d Regular member

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    Depends what you mean by MPEG4.
     
    celtic_d, Oct 19, 2006
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  3. jack3216

    jack3216 Member

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    I am having problems with AR of a video i have downloaded it does not fit my full TV screen i was told to download MPEG4 Modifier but AVI file must be in MPEG4 format to use it. Please excuse my ignorance but i would appreciate someones help and advice
     
    jack3216, Oct 19, 2006
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  4. celtic_d

    celtic_d Regular member

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    Ok in those terms MPEG4 means ASP MPEG-4 video in an avi container. Presumably you are talking about a SAP which would generally mean that the video already fits that criteria. Best guess would be that you have a DivX3 (MS MPEG-4 V3(not actually MPEG-4 despite the name)) avi. There is a modified version of ffmpeg that can convert rather than re-encode to ISO MPEG-4. Changing the AR in MPEG4Modifier just changes a flag though. Upto the player to read it and resize. Also if you did need to re-encode you may as well resize whilst you are doing it, so no need for MPEG4Modifier.
     
    celtic_d, Oct 20, 2006
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  5. jack3216

    jack3216 Member

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    Thank you for your knowledgeable reply. Please excsuse my ignorance. MPEG4 MODIFIER states it is a M4 file whatever that s. Also could you explain how to resize thank you
     
    jack3216, Oct 20, 2006
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  6. celtic_d

    celtic_d Regular member

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    M4? If it is an avi file then the video stream will have a fourCC code. eg. DX50, DIV3, mp43, etc.

    For resizing I would use AVISynth.
    Something like:
    avisource("orig.avi")
    lanczos4resize(w,h)
    encoder and then remux the original audio (assuming it doesn't need re-encoding).
     
    celtic_d, Oct 20, 2006
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