Re: Re: Space saving tips

T wrote:
> On Tue, 25 Apr 2006 10:18:18 +0200, Michel Bardiaux wrote:
>
>
> > > I'm trying to stuff as many tv series into a DVD as possible, but was only
> > > able to convert a 700M avi into >2G dvd mpeg (using ffmpeg the normal
> > > way). I saw that people can stuff more than 4 DVD-quality tv series in a
> > > disk. I'm wondering how I can do that with ffmpeg.
> >
> > Please *always* post the command you've been using *and* its output 
> > messages.
>
>
> Oh, I was thinking the general rule of sum... Ok, NP. 

Now what does *that* mean?

> Here is the detail:
>
> ffmpeg -i "bob1.avi" -target pal-dvd   -aspect 4:3 -s 704x516   -padtop 30 -padbottom 30 
> -aspect 4:3 -r 25.000 -b 3600 -maxrate 4500 -sameq -ab 224 "bob1.mpg"
> FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
>   configuration:  --prefix=/opt/new --libdir=${prefix}/lib --incdir=${prefix}/include/ffmpeg --mandir=${prefix}/share/man --enable-shared --enable-pthreads --enable-gpl --disable-bktr --disable-dv1394 --disable-network --disable-simple_idct --disable-ffserver 
>   libavutil version: 49.0.0
>   libavcodec version: 51.9.0
>   libavformat version: 50.4.0
>   built on Apr 24 2006 11:20:15, gcc: 3.3.5 (Debian 1:3.3.5-13)
> Input #0, avi, from 'bob1.avi':
>   Duration: 01:10:19.4, start: 0.000000, bitrate: 1392 kb/s
>   Stream #0.0, 25.00 fps(r): Video: mpeg4, yuv420p, 640x352
>   Stream #0.1: Audio: mp3, 48000 Hz, stereo, 192 kb/s
> File 'bob1.mpg' already exists. Overwrite ? [y/N] yOutput #0, dvd, to 
> 'bob1.mpg':
>   Stream #0.0, 25.00 fps(c): Video: mpeg2video, yuv420p, 704x576, q=2-31, 3600 
> kb/s
>   Stream #0.1: Audio: ac3, 48000 Hz, stereo, 224 kb/s
> Stream mapping:
>   Stream #0.0 -> #0.0
>   Stream #0.1 -> #0.1
> [dvd @ 0xb7fd82e0]buffer underflow
> [...]
> [dvd @ 0xb7fd82e0]buffer underflow
>
> $ tcprobe -i bob1.avi
> [tcprobe] RIFF data, AVI video
>
> [tcprobe] summary for bob1.avi, (*) = not default, 0 = not detected
> import frame size: -g 640x352 [720x576] (*)
>        frame rate: -f 25.000 [25.000] frc=3 
>       audio track: -a 0 [0] -e 48000,0,2 [48000,16,2] -n 0x55 [0x2000] (*)
>                    bitrate=192 kbps
>            length: 105487 frames, frame_time=40 msec, duration=1:10:19.480
>
> $ ls -gG bob1.avi 
> -rw-rw----  1 734420992 03-17 17:06 bob1.avi
>
> And my converted bob1.mpg was over 2G.

You force the output to be CBR at thrice the input bit rate. Seems 
normal that you get a file thrice as big.

To stuff 4 such avi's in 1 DVD, I think people put 4 divx-compatible 
avi's in an ISO filesystem on a *data* DVD. DIVX-compatible DVD players 
should be able to play that.

> thanks a lot
>
> tong


--
Michel Bardiaux
R&D Director
T +32 [0] 2 790 29 41
F +32 [0] 2 790 29 02
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