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I have a few hundred short MPEG files (each ~10 seconds) that I need to batch convert to AVI. What would be the best way to do this?

I've tried using WinFF but the quality was very subpar.

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what OS are you using? –  Nifle Sep 27 '10 at 21:04
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WinFF uses FFMPEG. Pretty much what most other general conversion tools use. You just need to specify the setting you want. –  Force Flow Sep 27 '10 at 23:32
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3 Answers

up vote 3 down vote accepted

SUPER © (Simplified Universal Player Encoder & Renderer) can do it. One of its features is multiple batch file processing by simple file drag and drop, and it's freeware.

Direct download link

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They need to make downloading that software from that site a little easier, its a treasure hunt to find the link...direct download here...erightsoft.biz/GetFile.php?SUPERsetup.exe –  Moab Sep 27 '10 at 21:07
    
@Moab: Free but tiring to download :) Thanks for the link by the way. –  Mehper C. Palavuzlar Sep 27 '10 at 21:11
    
I guess I shouldn't complain about free software. :-) –  Moab Sep 28 '10 at 1:35
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With FFmpeg, which will not re-encode the videos in any way and therefore preserve quality:

ffmpeg -i file.mpg -c:v copy -c:a copy file.avi

In a batch file, e.g. for Linux:

while IFS= read -d $'\0' -r file ; do
  ffmpeg -i "$file" -c:v copy -c:a copy ${file%%.mpg}.avi
done < <(find . -iname '*.mpg' -print0)

In a batch file, e.g. for Windows:

for /r %%i in (*.mpg) do (
ffmpeg -i %%i -c:v copy -c:a copy %%i~n.avi
)

The last example requires the Windows build of ffmpeg.

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+1 for ffmpeg. I've heard rather scary stories about Super wanting to modify files in the Windows\System32 folder so I avoid it like the plague. Plus if you want to use batch, then command line applications is the way to go. –  Richard Jul 17 '12 at 21:00
    
+1 Yeh, from personal experience Super acts rather suspicious and takes an insane amount of time to load just for a winforms application. Not sure what it does in background to justify this but it doesn't do anything with videos which can't be achieved with open-source solutions IMAO –  James Jul 17 '12 at 21:11
    
Thank you for the correction, @Richard! –  slhck Jul 17 '12 at 21:33
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MPEG Streamclip is a powerful free video converter, player, editor for Mac and Windows.

http://www.squared5.com/

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