[MEncoder-users] Re: how to set dimensions for FLV?

[Nick Fedchik]

On Friday 01 December 2006 19:29, Jon Drukman wrote:
> try adding -vf scale=320:240 and see if that does anything for you.
fnm at voodle-ci:/usr/local/src$ /usr/local/bin/mencoder ./testfeed.ts -o ./output.flv -of 
lavf -lavfopts 
i_certify_that_my_video_stream_does_not_use_b_frames:format=flv -oac 
mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts 
vcodec=flv:vbitrate=500:mbd=2:mv0:trell:v4mv:cbp:last_pred=3 -srate 22050 -vf 
scale=320:240
CPLAYER: MEncoder dev-SVN-r21410-4.0.3 (C) 2000-2006 MPlayer Team
CPUDETECT: CPU: Dual Core AMD Opteron(tm) Processor 285 (Family: 15, Model: 
33, Stepping: 2)
CPLAYER: CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 1
CPLAYER: Compiled with runtime CPU detection.
...
MUXER: OK, exit
VFILTER: Opening video filter: [expand osd=1]
VFILTER: Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
VFILTER: Opening video filter: [scale w=320 h=240]
CPLAYER:====================================================================
DECVIDEO: Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
DECVIDEO: VDec: vo config request - 704 x 576 (preferred colorspace: Mpeg PES)
CPLAYER: The selected video_out device is incompatible with this codec.
Try adding the scale filter, e.g. -vf spp,scale instead of -vf spp.
DECVIDEO: VDecoder init failed :(
DECVIDEO: Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder 
libmpeg2-v0.4.0b
DECVIDEO: Selected video codec: [mpeg12] vfm: libmpeg2 (MPEG-1 or 2 
(libmpeg2))
CPLAYER:====================================================================
GLOBAL: MP3 audio selected.
Segmentation fault                                                                                                                           

:(

The same command line runned from valgrind are successfull
fnm at voodle-ci:/usr/local/src$ 
valgrind /usr/local/bin/mencoder ./testfeed.ts -o ./output.flv -of 
lavf -lavfopts 
i_certify_that_my_video_stream_does_not_use_b_frames:format=flv -oac 
mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts 
vcodec=flv:vbitrate=500:mbd=2:mv0:trell:v4mv:cbp:last_pred=3 -srate 22050 -vf 
scale=320:240
...
CPLAYER: MEncoder dev-SVN-r21410-4.0.3 (C) 2000-2006 MPlayer Team
CPUDETECT: CPU: Intel Pentium 4/Celeron 4 Northwood; Pentium 4 EE/Xeon 
Prestonia,Gallatin (Family: 15, Model: 2, Stepping: 7)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
CPLAYER: CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
CPLAYER: Compiled with runtime CPU detection.
 ...

   GLOBAL: MP3 audio selected.
 DECVIDEO: VDec: vo config request - 704 x 576 (preferred colorspace: Planar 
YV12)
  CPLAYER: VDec: using Planar YV12 as output csp (no 0)
  CPLAYER: Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
SwScaler: reducing / aligning filtersize 10 -> 12
SwScaler: reducing / aligning filtersize 10 -> 12
SwScaler: reducing / aligning filtersize 11 -> 10
SwScaler: reducing / aligning filtersize 11 -> 10
SwScaler: BICUBIC scaler, from yuv420p to yuv420p using MMX2
SwScaler: using n-tap MMX scaler for horizontal luminance scaling
SwScaler: using n-tap MMX scaler for horizontal chrominance scaling
SwScaler: using n-tap MMX scaler for vertical scaling (YV12 like)
SwScaler: 704x576 -> 320x240
 MENCODER: videocodec: libavcodec (320x240 fourcc=31564c46 [FLV1])
 MENCODER: [VE_LAVC] High quality encoding selected (non-realtime)!                                                                          
...
    MUXER: VIDEO CODEC ID: 22
    MUXER: AUDIO CODEC ID: 15001, TAG: 0
    MUXER: Writing header...
 MENCODER:
1 duplicate frame(s)!
 MENCODER: Pos:   0.8s     22f (33%)  1.22fps Trem:   0min   0mb  A-V:-0.084 
[0:58]
...
Flushing video frames.
    MUXER: Writing index...
 MENCODER:
Video stream:  481.594 kbit/s  (60199 B/s)  size: 248021 bytes  4.120 secs  96 
frames
 MENCODER:
Audio stream:   59.704 kbit/s  (7462 B/s)  size: 31777 bytes  4.258 secs


-- 
Best regards, Nick Fedchik