[MPlayer-users] Problem encoding mp4 file

[Kichigai Mentat]

I hate to top post, but I can't think of anywhere appropriate to  
stick this.
There are two odd things I noticed. First, you said it was an MP4  
file, yet MPlayer is recognizing the video as MPEG-1/2. Try forcing  
it to use an MPEG-4 decoder. It may help.

On Jul 17, 2005, at 13.17, zikzak at tele2.fr wrote:

> Hi,
>
> Following the advice of Kichigai Mentat, I used the CVS version of
> mplayer to create a MP4 file (Quicktime + AAC).
>
> Here is the commande line I used :
> mencoder -oac faac -of lavf -o r5_mencoder.mp4 r5.mpeg -ovc lavc
> -lavcopts vqscale=5
>
> The output has no video (audio is ok).
>
> During the encoding process I can see these lines :
>
> success: format: 0  data: 0x0 - 0x1bc2004
> MPEG-PS file format detected.
> VIDEO:  MPEG1  320x240  (aspect 1)  59.940 fps    0.0 kbps ( 0.0
> kbyte/s) [V] filefmt:2  fourcc:0x10000001  size:320x240  fps:59.94
> ftime:=0.0167
> ====================================================================== 
> ====
> 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)
> ====================================================================== 
> ====
> OK, exit Opening video filter: [expand osd=1]
> Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
> ====================================================================== 
> ====
> Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
> VDec: vo config request - 320 x 240 (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))
> ====================================================================== 
> ====
> VIDEO CODEC ID: 12
>
> This one seems strange :
> Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
>
> and in the output file I have the following line :
> QuickTime/MOV file format detected.
> --------------
> MOV track #0: 3146 chunks, 3146 samples
> MOV: Found MPEG4 movie Elementary Stream Descriptor atom (35)!
> Image size: 0 x 0 (24 bpp)
> Display size: 0 x 0
> Fourcc: mp4v  Codec: ''
>
> The image size is 0 x 0.
>
> Can you explain it please ?
>
> Regards
> --
> ZikZak
>
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