[MEncoder-users] Fwd: Creating an avi from a group of jpgs

[Alex Nyers]

Hi again,

I wanted to follow up and thank everyone for their help on this. It
turned out that the problem was rooted in the images that had been
originally converted to 1024x768 by psp8. Though they looked fine upon
initial viewing, mencoder didn't like going inbetween them and the
images resized with imagemagick during the encoding process. I went
through and resized all the images with imagemagick, and that has
solved the problem. Thanks,

Alex Nyers


---------- Forwarded message ----------
From: Alex Nyers <nyersa at gmail.com>
Date: Aug 16, 2007 4:58 PM
Subject: Creating an avi from a group of jpgs
To: mencoder-users at mplayerhq.hu


Hello all,

I have been struggling with creating an avi from a group of jpg's (~14
thousand) that I took with an intervalometer and a nikon d5300 over
the summer at an archaeology dig. The images were originally taken at
2592x1944, then scaled down to 1024x768. Originally I tried to use the
batch feature with paint shop pro 8 to change the resolution, but it
failed after processing a few hundred, so I used imagemagick (winxp)
to convert them. The string used was "mogrify -resize 1024x768 *.jpg".
I then download mplayer via the svn trunk from the mplayerhq site, and
ran the following string to convert them into a mpeg using my linux
box: "mencoder mf:///alex_c_drive/pics/testing/ -mf fps=25:type=jpg
-ovc lavc -lavcops vcodec=mpeg4:mbd=2:trell -o
/home/nyersa/output.avi". The images are being pulled across the
network from my windows box to the linux box via a samba share, and
then stored locally as an avi on the linux box. Whenever I try to
create the avi, I get blue artifacts on the bottom third of the frame
after ~ 100 jpg's are processed. I have tried using different codecs,
such as mpeg2 and mjpeg, but with no difference in results. I have
included a group of 100 images, and the output.avi file that I get
when I run the previously mentioned string on the ftp site
(ftp://upload.mplayerhq.hu/MPlayer/incoming/) in a file called
images.zip. Any help would be most appreciated. Thanks,

Alex Nyers