====== Video Editing ======

===== Merging of two or more avi-files =====

Playlist file (list of all avi-files which should be merged)

<code bash>file 'file2.avi'
file 'file1.avi'</code>

==== Concatenate movies ====

<code bash>ffmpeg -f concat -i plist.txt -codec msrle  -c copy video_output.avi</code>

The -codec option defines the output video codec.\\
To convert the video in the same step in another format you can give some explicite codec and parameters.\\
Here the parameters for a Microsoft WMV file with .avi extension\\
<code>ffmpeg -y -f concat -i plist.txt -an -vcodec msmpeg4 -qscale 0 -b:v 4M -r 5 output.avi</code>

With -qscale the encoder uses the same quantisation method as the input files, for better quality.


==== Combine movies into one ====
Stack movies on top of each other:
<code bash>ffmpeg -i plist.txt -filter_complex vstack -c:v libx264 output.avi</code>

Next to each other horizontally works the same way, but using the option <code bash>-filter_complex hstack</code>