Gentoo Archives: gentoo-user

From: Iain Buchanan <iaindb@××××××××××××.au>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] mencoder did nothing all night at 100% CPU!
Date: Mon, 28 Aug 2006 12:44:26
Message-Id: 1156768772.27666.20.camel@orpheus
In Reply to: Re: [gentoo-user] mencoder did nothing all night at 100% CPU! by Uwe Thiem
1 On Fri, 2006-08-11 at 08:21 +0100, Uwe Thiem wrote:
2 > On 10 August 2006 23:06, Iain Buchanan wrote:
3 > > Hi all,
4 > >
5 > > I'm trying out mencoder to try a few different codecs and formats for 1.
6 > > dvd authoring and 2. just compressing to keep on my HD.
7 >
8 > For DVDs, try this:
9 >
10 > mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd \
11 > -vf scale=720:576,harddup -srate 48000 -af lavcresample=48000 \
12 > -lavcopts vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:\
13 > vbitrate=5000:keyint=15:acodec=ac3:abitrate=192:aspect=4/3 \
14 > -ofps 25 -o outfile.mpeg infile
15
16 wow! I just got around to trying that a couple of days ago and it
17 produces great output: fast, small file size, and no noticeable
18 difference in quality between the mpeg and the original dv! (I watched
19 many different clips many times over to make sure! on TV and on my LCD)
20
21 But: the mpeg doesn't seem to scale right. My laptop display is
22 1680x1050, and hence the original dv output (4:3) has black edges on
23 each side, but the converted mpeg plays "stretched", so that everybody
24 looks fat!
25
26 Is this just a _player_ issue, or is it a problem with the encoding of
27 the mpeg itself?
28
29 I noticed the command line has aspect=4/3 in it already, which is the
30 aspect of the original dv file...
31
32 many thanks!
33 --
34 Iain Buchanan <iaindb at netspace dot net dot au>
35
36 The first 90% of a project takes 90% of the time, the last 10% takes the
37 other 90% of the time.
38
39 --
40 gentoo-user@g.o mailing list

Replies

Subject Author
Re: [gentoo-user] mencoder did nothing all night at 100% CPU! Uwe Thiem <uwix@××××.na>
Re: [gentoo-user] mencoder did nothing all night at 100% CPU! Calvin Walton <calvin.walton@×××××.com>
Re: [gentoo-user] mencoder did nothing all night at 100% CPU! Iain Buchanan <iaindb@××××××××××××.au>
Re: [gentoo-user] tweaking mencoder Iain Buchanan <iaindb@××××××××××××.au>