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How to increase the sound of part of a video file

Discussion in 'Other video questions' started by stibi, Jan 4, 2008.

  1. stibi

    stibi Regular member

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    I have on my hard disk a movie in the form of VOB file. I would like to cause part of it (in this case the beginning)to sound louder. Is or are there any program/s (as fare as possible not too complicated one/s)with which one can do it ?

    Thanks in advance

    stibi
     
  2. attar

    attar Senior member

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    This uses a number of programs, but comprises simple steps.
    The Video and Audio are separated;the audio adjusted;the new audio and original video are rejoined to create a new file.


    1 VOBEDIT- Demux VOB to m2v and ac3
    2 PX3- Convert AC3 to WAV
    3 Audacity- Load wav and adjust audio and output New WAV
    4 FFMPEGGui- Convert New WAV to New AC3
    5-MUXMAN- Mux m2v with New AC3 into New VOB (a New VOB folder with all the required files is created)



    VOBEdit
    http://www.digital-digest.com/dvd/downlo...obedit_254.html

    Run VobEdit > 'Open', select VTS_01_1.VOB (the first large VOB of the title, the rest will come in at the same time).
    'Demux' > select 'All Video and Audio'.
    The files will be saved as an .m2v and an ac3.

    px3 ac3 to wav
    http://www.videohelp.com/tools/PX3_AC3_to_WAV

    Load the ac3 and select an output name eg ac3.wav

    Audacity
    http://superb-east.dl.sourceforge.net/so...y-win-1.2.6.exe

    Drag or load the wav onto the window.
    Highlight the section to amplify, click 'Effects'.
    Choose 'Amplify'
    Check 'Allow Clipping' and set the slider up ~9db, check the level then OK.
    Play the stream to verify that the sound is good.
    Export the file as 'new.wav'

    ffmpeggui
    http://download2.videohelp.com/download/ffmpeggui03c.zip

    Load new.wav and save as new.ac3

    muxman
    http://www.mpucoder.com/Muxman/versions.shtml

    Load the video .m2v and the new audio new.ac3

    Select an output folder.
     
  3. stibi

    stibi Regular member

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    Many many thanks for your prompt and very helpful answer.

    I acted precisely as guided by you (except that instead of Audacity I used my Cool Edit program)and it worked perfectly.

    Could You, please, tell me also how can one increase the volume of avi,mpeg,flv etc. ?

    Thanks in advance
     
  4. attar

    attar Senior member

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    The basic steps would be the same for MPEG files, inasmuch as it is demuxed, adjusted and remuxed.

    Run 'Rejig', 'File' Mode.
    Select the MPEG file then demux both streams to M2V amd MP2 (MPA?)
    Adjust/convert the audio.
    Load new WAV and M2V into 'IMagoMPEG Muxer' and create new MPEG file.


    Rejig Demux VOB/MPEG
    http://www.afterdawn.com/software/video_software/video_tools/rejig.cfm

    IMagoMPEG Muxer M2V + MP2 -> MPEG
    http://www.videohelp.com/tools/ImagoMPEG-Muxer

    For AVI, use VirtualDub.
    Load video, then ('File' 'Save wav'), then reload the new wav ('Audio' 'WAV Audio').
    Note, you would have to select a compression for the new audio, else it is saved as a large, uncompressed PCM file.
    Save the new video file without recompressing ('Video' 'Direct Stream Copy).

    VirtualDub most recent stable
    http://virtualdub.sourceforge.net/

    XVid Codec
    http://www.xvid.org/

    Free DivX codec
    http://www.divx.com/divx/windows/download/

    Lame MP3 codec
    http://users.tpg.com.au/mtam/install_lame.htm

    As to FLV, I haven't tried, so cannot say.

    Good luck.
     
  5. stibi

    stibi Regular member

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    You are great!
    I will try it, though - judging from my first experience with your advise - I am convinced it will work.

    Many thanks again

    stibi
     
  6. stibi

    stibi Regular member

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