[MPlayer-users] aspect ratio options ignored

[Giacomo Comes]

On Mon, Apr 17, 2006 at 11:47:08PM +0100, Frederik Eaton wrote:
> Hi,
> 
> I'm trying to watch a DVD and the display aspect ratio is wrong. I've
> tried to change it with -x, -y, -xy, -aspect, -vf aspect, etc., and
> none of these have any effect. Here is the command:
> 
> mplayer dvd://10 /dev/dvd -alang ja -slang en -zoom -aspect 16:9 >& mplayer.out

1) this command is wrong. After dvd://10 there is /dev/dvd that doesn't make sense.
probably you mean to use -dvd-device /dev/dvd, but /dev/dvd is the default so it's not
necessary.

2) the option -aspect will not apply to dvd://10 but to /dev/dvd. See the man page.

3) you use the option -aspect 16/9 and later the output shows that the video
is scaled to 1024x576 (16/9), so if it is wrong probably it is due to the
fact that your monitor does not have 4/3 aspect ratio. Use the option -monitoraspect.

Giacomo

> 
> Below is the resulting output file.
> 
> Also, if I can make a request, I think it would be much easier to use
> mplayer if it exited with an error upon encountering an option which
> has no effect, rather than just ignoring it - I don't know how hard
> that would be to do, though...
> 
> Thanks in advance,
> 
> Frederik
> 
> MPlayer 1.0pre7try2-3.3.6 (C) 2000-2005 MPlayer Team
> CPU: Intel  (Family: 6, Stepping: 6)
> Detected cache-line size is 64 bytes
> CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
> Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2
> 
> 
> Playing dvd://10.
> Reading disc structure, please wait...
> There are 10 titles on this DVD.
> There are 12 chapters in this DVD title.
> There are 1 angles in this DVD title.
> DVD successfully opened.
> MPEG-PS file format detected.
> VIDEO:  MPEG2  720x576  (aspect 3)  25.000 fps  9800.0 kbps (1225.0 kbyte/s)
> ==========================================================================
> Opening audio decoder: [liba52] AC3 decoding with liba52
> Using SSE optimized IMDCT transform
> AC3: 2.0 (stereo)  48000 Hz  224.0 kbit/s
> Using MMX optimized resampler
> AUDIO: 48000 Hz, 2 ch, s16le, 224.0 kbit/14.58% (ratio: 28000->192000)
> Selected audio codec: [a52] afm:liba52 (AC3-liba52)
> ==========================================================================
> vo: X11 running at 1024x768 with depth 24 and 32 bpp (":0.0" => local display)
> ==========================================================================
> Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
> VDec: vo config request - 720 x 576 (preferred csp: Mpeg PES)
> Could not find matching colorspace - retrying with -vf scale...
> Opening video filter: [scale]
> The selected video_out device is incompatible with this codec.
> VDecoder init failed :(
> Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder libmpeg2-v0.4.0b
> Selected video codec: [mpeg12] vfm:libmpeg2 (MPEG-1 or 2 (libmpeg2))
> ==========================================================================
> Checking audio filter chain for 48000Hz/2ch/s16le -> 48000Hz/2ch/s16le...
> AF_pre: 48000Hz/2ch/s16le
> AO: [oss] 48000Hz 2ch s16le (2 bps)
> Building audio filter chain for 48000Hz/2ch/s16le -> 48000Hz/2ch/s16le...
> Starting playback...
> VDec: vo config request - 720 x 576 (preferred csp: Planar YV12)
> VDec: using Planar YV12 as output csp (no 0)
> Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
> VO: [x11] 720x576 => 1024x576 Planar YV12 
> SwScaler: using unscaled Planar YV12 -> BGRA special converter
> ...
> 
> -- 
> http://ofb.net/~frederik/
> 
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