[MPlayer-users] stop prescalling

[Swapnil Jain]

On 25-Apr-2011, at 5:50 PM, Vladimir Mosgalin wrote:

> Hi Swapnil Jain!
> 
> On 2011.04.25 at 16:26:05 +0530, Swapnil Jain wrote next:
> 
>>> Hi Swapnil Jain!
>>> 
>>> On 2011.04.25 at 16:15:34 +0530, Swapnil Jain wrote next:
>>> 
>>>> when i play a movie (720x576) fullscreen, mplayer prescales it to 1024x576. how do i stop mplayer doing that
>>>> 
>>>> 
>>>> Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
>>>> VO: [vdpau] 720x576 => 1024x576 MPEG2 VDPAU acceleration  [fs]
>>>> 
>>> 
>>> Uhh -noaspect option will do the trick, but movie dimensions will be
>>> distorted (as you requested). "Prescaling" in mplayer means aspect fix.
>> 
>> I tried that, it didnt work
> 
> Hm? please show full mplayer log with
> mplayer -noaspect <movie file>
> It shouldn't prescale with -noaspect, at least if you use option before
> list of file names.
> 
> Well there are also complicated things like aspect switches in the
> middle of the movie, and dvd can have parts with different aspect
> ratio, I'm not sure -noaspect works for that, it might fail with dvdnav
> for that reason, for example. It has effect only on starts of the stream.

if you at this output its not prescaling, but its actually doing it. the display is the same as it was while not using -noaspect.


mplayer -nolirc -noaspect -fs -vo vdpau -vc ffmpeg12vdpau upintheair.mpg

MPlayer SVN-r33060-4.4.3 (C) 2000-2011 MPlayer Team

Playing upintheair.mpg.
Connecting to server 172.16.0.7[172.16.0.7]: 80...

Cache size set to 20000 KBytes
Cache fill:  0.00% (0 bytes)

TS file format detected.
VIDEO MPEG2(pid=33) AUDIO MPA(pid=36) NO SUBS (yet)!  PROGRAM N. 2
VIDEO:  MPEG2  720x576  (aspect 3)  25.000 fps  4000.0 kbps (500.0 kbyte/s)
VMI3.0 is being used
==========================================================================
Forced video codec: ffmpeg12vdpau
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffmpeg12vdpau] vfm: ffmpeg (FFmpeg MPEG-1/2 (VDPAU))
==========================================================================
==========================================================================
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
AUDIO: 48000 Hz, 2 ch, s16le, 192.0 kbit/12.50% (ratio: 24000->192000)
Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
==========================================================================
AO: [oss] 48000Hz 2ch s16le (2 bytes per sample)
Starting playback...
[VD_FFMPEG] XVMC-accelerated MPEG-2.
[vdpau] Failed creating VDPAU decoder: invalid/unsupported VdpDecoderProfile value
Movie-Aspect is undefined - no prescaling applied.
VO: [vdpau] 720x576 => 720x576 MPEG2 VDPAU acceleration  [fs]
  V4L is 1
A:   6.9 V:   6.9 A-V: -0.000 ct: -0.476 152/152 24%  3%  1.6% 7 0 77%