13.8. Encoding from multiple input image files (JPEG, PNG, TGA, etc.)13.8. Encoding from multiple input image files (JPEG, PNG, TGA, etc.)Prev Chapter 13. Basic usage of MEncoder Next13.8. Encoding from multiple input image files (JPEG, PNG, TGA, etc.)
MEncoder is capable of creating movies from one
or more JPEG, PNG, TGA, or other image files. With simple framecopy it can
create MJPEG (Motion JPEG), MPNG (Motion PNG) or MTGA (Motion TGA) files.
Explanation of the process:
MEncoder decodes the input
image(s) with libjpeg (when decoding
PNGs, it will use libpng).

MEncoder then feeds the decoded image to the
chosen video compressor (DivX4, Xvid, FFmpeg msmpeg4, etc.).
Examples.Â
The explanation of the -mf option is in the man page.


Creating an MPEG-4 file from all the JPEG files in the current directory:

mencoder mf://*.jpg -mf w=800:h=600:fps=25:type=jpg -ovc lavc \
-lavcopts vcodec=mpeg4:mbd=2:trell -oac copy -o output.avi




Creating an MPEG-4 file from some JPEG files in the current directory:

mencoder mf://frame001.jpg,frame002.jpg -mf w=800:h=600:fps=25:type=jpg \
-ovc lavc -lavcopts vcodec=mpeg4:mbd=2:trell -oac copy -o output.avi




Creating an MPEG-4 file from explicit list of JPEG files (list.txt in current
directory contains the list of files to use as source, one per line):

mencoder mf://@list.txt -mf w=800:h=600:fps=25:type=jpg \
-ovc lavc -lavcopts vcodec=mpeg4:mbd=2:trell -oac copy -o output.avi



You can mix different types of images, regardless of the method you use
â€" individual filenames, wildcard or file with list â€" provided of
course they have the same dimensions.
So you can e.g. take title frame from PNG file,
and then put a slideshow of your JPEG photos.


Creating a Motion JPEG (MJPEG) file from all the JPEG files in the current
directory:

mencoder mf://*.jpg -mf w=800:h=600:fps=25:type=jpg -ovc copy -oac copy -o output.avi




Creating an uncompressed file from all the PNG files in the current directory:

mencoder mf://*.png -mf w=800:h=600:fps=25:type=png -ovc raw -oac copy -o output.avi



Note
Width must be integer multiple of 4, it is a limitation of the RAW RGB AVI
format.



Creating a Motion PNG (MPNG) file from all the PNG files in the current
directory:

mencoder mf://*.png -mf w=800:h=600:fps=25:type=png -ovc copy -oac copy -o output.avi



Creating a Motion TGA (MTGA) file from all the TGA files in the current
directory:

mencoder mf://*.tga -mf w=800:h=600:fps=25:type=tga -ovc copy -oac copy -o output.avi

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