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I would like to combine multiple movie clips with .mov and .avi extension into a single file. Is there any free software in the market that is good and able to perform that?

Preferably that should work without any loss in quality.

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2
  • are you looking for simple concatenation (joining end-to-end), or are you looking for something more complicated (non-linear editing)?
    – quack quixote
    Dec 12, 2009 at 3:08
  • Something simple and easy to use for joining end-to-end.
    – Lopper
    Dec 12, 2009 at 4:37

4 Answers 4

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3

I use Avidemux for tasks like this.

enter image description here

Process with Avidemux is as follows:

  1. Choose File->Open and select the first file

  2. Choose File->Append and select the next file. Repeat this step until all the files you want to append to the first file have been appended.

  3. Choose Save and select location and filename

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  • 5
    Would appreciate if you can provide the procedure for performing such operations in avidemux.
    – Lopper
    Dec 13, 2009 at 2:02
  • @Lopper Instructions added
    – Elder Geek
    Nov 4, 2015 at 18:59
20

Try mencoder or ffmpeg, both free, both good.

Mencoder

mencoder -oac copy -ovc copy -o output.avi input1.avi input2.avi

FFmpeg

From the FFmpeg Wiki article on how to concatenate (join, merge) media files:

Create a file "mylist.txt" with all the files you want to have concatenated in the following form ( Lines starting with a dash are ignored ) :

# this is a comment
file '/path/to/file1'
file '/path/to/file2'
file '/path/to/file3'

Note that these can be either relative or absolute paths. Then you can encode your files with:

ffmpeg -f concat -i mylist.txt -c copy output
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9
  • Will there be any loss of quality by using Mencoder or FFmpeg?
    – Lopper
    Dec 12, 2009 at 4:41
  • 1
    if you're joining multiple files of different codecs, yes, loss of quality is likely -- the tool will need to re-encode the streams so the final stream uses the same codec/bitrate throughout.
    – quack quixote
    Dec 12, 2009 at 17:22
  • 2
    Best answer, too few upvotes and not accepted. Shame ... +1 from me.
    – 0xC0000022L
    Mar 1, 2013 at 1:28
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    @handuel -sameq has been removed ffmpeg.org/…
    – Jürgen Steinblock
    Nov 24, 2014 at 15:17
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    You may need to add safe 0 in the command: stackoverflow.com/questions/38996925/…
    – Gruber
    Sep 14, 2018 at 12:51
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Easy Video Joiner can join multiple AVI, MPEG (MPG), RM (Real Media) or WMV/ASF (Window Media) files into one large movie file. You can add an unlimited number of video files as you like to the list and easily rearrange their order if needed. With just a few mouse clicks, you can enjoy your movie clips without interruption.

alt text

Easy Video Joiner is freeware.

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2
  • Will there be any quality loss?
    – Lopper
    Dec 12, 2009 at 5:08
  • @lopper: if you're joining multiple files of different codecs, yes, loss of quality is likely -- the tool will need to re-encode the streams so the final stream uses the same codec/bitrate throughout.
    – quack quixote
    Dec 12, 2009 at 17:23
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Use any video editing software (even Windows Movie Maker), import the files into the Editor timeline, then export it as a new movie. If you can pay - "Camtasia Studio 8" is the best choice as it takes less ram and CPU to produce HQ output files.

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