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Monday, March 21, 2011

Converting video from ameg to avi with ffmpeg

I have been using my Sony SCR SX 20 for quite a some time now. One of the the problem I see is that even though it does not record in High Definition (HD) , it consumes a lot of space.In fact for 22 Minutes of High Quality video it creates a .MPEG file with size 1.5 Gb. This is too large for uploading in any video sites like YouTube. I tried Linux GUI Tools like WinFF and Avidemux  but they elongated the video vertically and also sometimes conversion failed because of some library missing issue.

I found it can be done with ffmpeg and desired optimal quality can be achieved gaining some free space.

For best quality
ffmpeg -i 1.MPG -sameq 1.avi

For desired quality
ffmpeg -i infile.MPG -qmax 4 outfile.avi

Here the number 4 indicates that I need a moderate quality , higher the number lower is the quality and smaller is the output file size. You can hit and trial with a small file and choose your desired number. Same is applicable while converting MOV file to avi.

For Batch processing one can try
??for f in *.MPG; do ffmpeg -i "$f" -qmax 4 "${f%.MPG}.avi"; done

6 comments:

  1. Some other video conversions in FFmpeg are
    .avi to divx format: ffmpeg -i input.avi -s 320x240 -vcodec msmpeg4v2 output.avi
    .avi to dv format: ffmpeg -i input.avi -s pal -r pal -aspect 4:3 -ar 48000 -ac 2 final.dv
    .mpg to .avi format: ffmpeg -i input.mpg ouput.avi
    wav file to mp3 format: ffmpeg -i input.avi -vn -ar 44100 -ac 2 -ab 192 -f mp3 output.mp3
    ogg theora to mpeg format: ffmpeg -i input.ogm -s 720x576 -vcodec mpeg2video -acodec mp3 ouput .mpg
    To know more visit: http://ubuntumanual.org/posts/327/converting-videos-in-ubuntu-using-ffmpeg-the-ultimate-free-video-converter?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+ubuntumanual+%28Ubuntu+Manual+-+Ubuntu+for+human+beings%29

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  2. [...] « Converting video from ameg to avi with ffmpeg [...]

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  3. I have 4000 png images to make into a movie, can anyone help?

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  4. Gabriel Ero OsayandeMay 18, 2012 at 2:18 PM

    yes bro i can

    ReplyDelete
  5. Gabriel Ero OsayandeMay 18, 2012 at 2:18 PM

    how u d long tyme

    ReplyDelete