[MPlayer-users] H263 decoding or encoding - aspect ratio problem ?

[Teetrinker at gmx.net]

Hi,     
if I open a 3gp(created: look below) file with h263/amr in a ffmpeg based 
player (xine,mplayer..) the video get always resized. But the PAR should 
be 1:1. I tried different ways to create a 3gp file always the same 
result - the h263 video get resized. What I am doing wrong ? Is it an 
encoding or decoding problem ?    
     
     
Source: http://www.pocketmovies.net/detail_274.html     
     
First try:     
     
video(2pass):     
     
mencoder iceegg_320x184.mpg -vf scale=176:106,expand=176:144 -ovc lavc      
-passlogfile mencoder-2pass.log -nosound -lavcopts      
vcodec=h263:vbitrate=48:vpass=1 -ofps 12 -o /dev/null -of rawvideo     
     
mencoder iceegg_320x184.mpg -vf scale=176:106,expand=176:144 -ovc lavc      
-passlogfile mencoder-2pass.log -nosound -lavcopts      
vcodec=h263:vbitrate=48:vpass=2 -ofps 12 -o video_qcif.h263 -of rawvideo    

     
audio:     
     
ffmpeg -i iceegg_320x184.mpg -vn -ac 1 -ab 16 -ar 8000 audio.amr     
     
muxing:     
     
MP4Box -3gp -fps 12 -add video_qcif.h263 -add audio.amr iceegg.3gp     
     
Sample: http://rapidshare.de/files/3204348/iceegg.3gp.html     
     
     
Second try:     
     
ffmpeg -i iceegg_320x184.mpg -r 12 -s 176:106 -padtop 20 -padbottom 18     
-aspect 1.2222 -b 48 -ab 16 -ac 1 -ar 8000 iceeg_ffmpeg.3gp      
     
Sample: http://rapidshare.de/files/3204743/iceeg_ffmpeg.3gp.html   
 
   
     
Other source: http://www.pocketmovies.net/detail_278.html   
    
First try:     
     
video(2pass):     
     
mencoder greynautz_320x240.mpg -vf scale=128:96 -ovc lavc      
-passlogfile mencoder-2pass.log -nosound -lavcopts      
vcodec=h263:vbitrate=32:vpass=1 -ofps 10 -o /dev/null -of rawvideo     
     
mencoder greynautz_320x240.mpg -vf scale=128:96 -ovc lavc      
-passlogfile mencoder-2pass.log -nosound -lavcopts      
vcodec=h263:vbitrate=32:vpass=2 -ofps 10 -o video_sqcif.h263 -of rawvideo   
 
     
audio:     
     
ffmpeg -i greynautz_320x240.mpg -vn -ac 1 -ab 16 -ar 8000 audio.amr     
     
muxing:     
     
MP4Box -3gp -fps 10 -add video_sqcif.h263 -add audio.amr greynautz.3gp 
 
Sample: http://rapidshare.de/files/3205296/greynautz.3gp.html 
 
 
Second try:     
     
ffmpeg -i greynautz_320x240.mpg -r 12 -s sqcif -b 32 -ab 16 -ac 1 -ar 
8000 greynautz_ffmpeg.3gp  
 
Sample: http://rapidshare.de/files/3205440/greynautz_ffmpeg.3gp.html 
 
Richard  
 
     
      

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