>>So far i have the vob file on the HDD, and mpeg2dec reads it, but do i
>> have to use a pipe here to store the output in a file? Right now the
>> video displays on the desktop. With -o pgm i get a pgm for each >>frame.
> Why not use 'mpeg2dec -o pgmpipe ...'?
I have tested this, mpeg2dec ofile.m2v -o pgmpipe | pgmtoy4m -i t -a 1:1
-r 30000:1001 -x 420mpeg2 > test.mov
But when i do a lavplay later on test.mov i get:
nable to identify file (not a supported format - avi, quicktime).
**ERROR: [lavplay] Error opening test.mov
So i am not sure if pgmtoy4m can "store" the output in a file which i
can use with glav/lavplay etc... as the stuff in the manpage doesn´t
tell of any option to specify an output file.
Also the audio won´t be available here, so i guess ffmpeg or mencoder
will be better here to have the audio too.
BTW i might recompile the mjpegtools here as i get "Segmentation fault"
very often. Either i recompile version 1.8.0 or get back to 1.6.2.
Bernhard
> You get a stream of the 'pgm' images. 'pgmtoy4m' from >mjpegtools
> understands that format and will assist in the repacking (it >really
> isn't a "conversion" - the bytes themselves are not changed). >The
> frame size will be computed by pgmtoy4m but the rate, aspect >ratio and
> chroma sampling info must be supplied by the user.
>
> No, you do not have to use a pipe if you have lots of space. >But
> compressing DVD video will multiply the size about 20x - DVD >video
> averages in many cases between 5 and 9 Mb/s and uncompressed >video
> is ~125Mb/s.
>
> Perhaps this script (which I use to recode HDTV broadcasts to >DVD)
> will be useful (of course the aspect and frame size numbers will >need
> to be changed if you're in a 625 line country ;)):
>
> Cheers,
> Steven Schultz
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