Olafur Jens Sigurdsson wrote: > Imagemagick does the trick for you. > > To see if your files are interlaced or not you can use identify > -verbose filename.jpg and search for the Interlace line and if it says > None then it isnt a progressive jpeg and if it says Plane it is.
That was really great help. Thank a ton. The problem of identifying an image as progressive or not is solved. > > To convert from basic to progressive use convert infile.jpg -interlace > Plane outfile.jpg The problem left is to convert all my current jpegs into progressive ones. jpegtran did the job (the following is one long command): $> for f in *.jpg; do echo "$f"; mv "$f" tmp.jpg; jpegtran -progressive tmp.jpg > "$f"; rm -f tmp.jpg; done (I am sure there is a way to use the stdout and stdin in this procedure instead of tmp.jpg, but I didn't check) regards, ->HS -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
