[MEncoder-users] PNG to AVI : Error while decoding frame!

[Mario Valle]

The movie looks OK using mplayer pre7.
But one thing that cause the effect you experienced is ImageMagick. You have Q16 
installed, so is mandatory to use -depth 8 option for convert when converting images for 
mplayer.
Hope it helps
			mario


Gilles Quemener wrote:
> Hello,
> 
> Thanks a lot for your answers, I have tested them, but without any 
> success :
> 
> At http://lpscwww.in2p3.fr/UCN/PNG  you may find some files related to 
> this problem :
> 
> -    img_png.tar.gz  containing all my png images taken from a POVRAY 
> sample page
> -    img_jpg.tar.gz   containing some of the above png images converted 
> into jpg using
>                               "convert" from ImageMagick
> -    sortie.avi          obtained from the jpg images using the 
> following command :
> /ucn/quemener/local/MPlayer-1.0pre8/bin/mencoder "mf://*.jpg" -mf 
> fps=25:type=jpg -ovc lavc -lavcopts vcodec=mpeg4 -of avi -o sortie.avi
> 
> It looks upside down and very bad when l play it with MPlayer ! Any 
> hints are more than welcome !
> Thanks,
> 
>   Gilles
> 
> 
> Mario Valle wrote:
> 
>> Gilles Quemener wrote:
>>
>>> Hello,
>>>
>>> In order to make some small animations from PNG files created with 
>>> Pov-Ray,
>>> I have just installed MPlayer/Mencoder on my Linux system. But when I 
>>> tried
>>> to type the following command line, I get some error messages like  
>>> "Error
>>> while decoding frame!" (see output below) and I do know how to solve 
>>> it, therefore, I would really
>>> appreciate if someone could help me.
>>> Thanks a lot,
>>>
>>>                    Gilles
>>>
>>> /ucn/quemener/local/MPlayer-1.0pre8/example_gq<345 >../bin/mencoder 
>>> "mf://*.png" -mf fps=25:type=png -ovc lavc -lavcopts vcodec=mpeg4 -of 
>>> avi -o sortie.avi
>>> MEncoder 1.0pre8-3.2.3 (C) 2000-2006 MPlayer Team
>>> CPU:               Intel(R) Pentium(R) 4 CPU 3.20GHz (Family: 15, 
>>> Model: 4, Stepping: 3)
>>> CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
>>> Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2
>>>
>>> success: format: 16  data: 0x0 - 0x0
>>> [mf] search expr: *.png
>>> [mf] number of files: 70 (280)
>>> VIDEO:  [MPNG]  0x0  24bpp  25.000 fps    0.0 kbps ( 0.0 kbyte/s)
>>> [V] filefmt:16  fourcc:0x474E504D  size:0x0  fps:25.00  ftime:=0.0400
>>> Opening video filter: [expand osd=1]
>>> Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
>>> ========================================================================== 
>>>
>>> Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
>>> Selected video codec: [ffpng] vfm: ffmpeg (FFmpeg PNG decoder)
>>> ========================================================================== 
>>>
>>> Error while decoding frame!
>>> Error while decoding frame!0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]
>>> Error while decoding frame!0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]
>>>
>>> 1 duplicate frame(s)!
>>> Writing header...
>>> ODML: Aspect information not (yet?) available or unspecified, not 
>>> writing vprp header.
>>> Writing header...
>>> ODML: Aspect information not (yet?) available or unspecified, not 
>>> writing vprp header.
>>> Error while decoding frame!0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]
>>>
>>> 1 duplicate frame(s)!
>>> Writing header...
>>>
>>> _______________________________________________
>>> MEncoder-users mailing list
>>> MEncoder-users at mplayerhq.hu
>>> http://lists.mplayerhq.hu/mailman/listinfo/mencoder-users
>>
>> In the past there were  problems with some PNG file. Try converting 
>> the images to jpeg and see if they work.
>> Ciao!
>>          mario
>>
> 
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-- 
Ing. Mario Valle
Visualization Group                              | http://www.cscs.ch/~mvalle
Swiss National Supercomputing Centre (CSCS)      | Tel:  +41 (91) 610.82.60
v. Cantonale Galleria 2, 6928 Manno, Switzerland | Fax:  +41 (91) 610.82.82