[MPlayer-users] MPlayer works like a charm, just need a few tips!
gabor
gabor at realtime.sk
Thu Jan 23 20:16:42 CET 2003
On Thu, 2003-01-23 at 19:54, Kris Kielhofner wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Hello all,
>
> MPlayer is the coolest thing that I have ever seen! Because of it, I
> am finally able to make use of my dual processor AMD Athlon MP machine.
> I have no complaints, but I am wondering how to do a couple of things:
>
> 1) I have several Divx files that I have created with the mpeg4 codec of
> libavcodec. The problem is, the video is in 4:3 format with the stupid
> black bars. I want to crop the video without having to re-encode the
> AVI file (thus resulting in a loss of quality), so that the aspect ratio
> of the output file is 16:9 like it should be. I have run mplayer -vop
> cropdetect to determine the proper cropping parameters. I understand
> that MPlayer doesn't use -vop options with -dumpstream. I also
> understand that Mencoder doesn't use -vop options with -ovc copy and
> -oac copy. So what can I do to crop these AVI files that I already made
> without losing quality?
you cant.
if you want to crop, you'll have to reencode. :(
>
> 2) Is there any way to make Mencoder SMP aware? Right now I have no
> problem with running two instances of it to use my hardware to it's full
> potential, but I have to maintain two seperate working directories for
> encoding. Not a big deal, but would be nice.
no, ... mencoder ( as mplayer ) is single threaded...
>
> 3) What is the best way to handle combining dual sided and or double
> disc DVD's (DVD's where the movie actually spans more that one side, ie
> Goodfellas)? I have tried ripping each side, then cat'ing each of those
> files into mplayer with streamdump and - (to use stdin). It seems to
> work (output file is about the size it should be), except that I am
> unable to seek in the file, and the audio doesn't work. I have tried
> corresponding options for Mencoder, as well as rebuilding the index
> (does that make a difference with MPEG2 video like DVD's)? I have also
> tried Mencoder with -ovc copy -oac copy into yet another file, but it
> still doesn't work.
hmm... tell us what exactly are you trying to achive?
one big vob file? one big mpeg2 file?
for creating rips, why don't simply
cat *.vob | mencoder
and reencode the audio + video....
>
>
> I should also mention that I have several friends that are thinking of
> converting to Linux just so that they can use MPlayer! (Who can blame them)?
:)
gabor
>
>
> Thanks a lot guys!
>
> Kris Kielhofner
>
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