[MEncoder-users] Creating animated screenshots

[Volker Poplawski]

vbitrate seems to be ignored on every codec whenever mf is used. It is 
respected i.g. when encoding from .vob to .avi.

BTW: My mediaplayer doesn't accept mpeg4 also.

Invocation and output of mplayer below:
> mencoder "mf://*.jpg" -mf fps=10:type=jpg -ovc lavc -lavcopts 
vcodec=mpeg4:vbitrate=1200 -nosound -o output_mpeg4.avi
MEncoder 1.0pre7try3-SUSE Linux 10.0 (x86_64)-Packman-4.0.2 (C) 2000-2005 
MPlayer Team
CPU: Advanced Micro Devices Opteron Sledgehammer (Family: 8, Stepping: 10)
Detected cache-line size is 64 bytes
CPUflags: Type: 8 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE SSE2

File not found: 'frameno.avi'
Failed to open frameno.avi
success: format: 16  data: 0x0 - 0x0
[demuxer] mf support.
[mf] search expr: *.jpg
[mf] number of files: 3161 (25288)
VIDEO:  [IJPG]  0x0  24bpp  10.000 fps    0.0 kbps ( 0.0 kbyte/s)
[V] filefmt:16  fourcc:0x47504A49  size:0x0  fps:10.00  ftime:=0.1000
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1  (-1=autodetect) osd: 1
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffmjpeg] vfm:ffmpeg (FFmpeg MJPEG decoder)
==========================================================================
Writing AVI header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp 
header.
VDec: vo config request - 1024 x 768 (preferred csp: Planar YV12)
VDec: using Planar YV12 as output csp (no 3)
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
videocodec: libavcodec (1024x768 fourcc=34504d46 [FMP4])
ODML: Aspect information not (yet?) available or unspecified, not writing vprp 
header
Pos: 316.1s   3161f ( 0%)  26fps Trem:   0min   0mb  A-V:0.000 [737:0]]
Flushing video frames

Writing AVI index...
Fixing AVI header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp 
header.

Video stream:  737.411 kbit/s  (92176 bps)  size: 29136962 bytes  316.100 secs  
3161 frames
> Hi,
>
> On 5/23/06, Volker Poplawski <volker at openbios.org> wrote:
> > msmpeg2v2 at least leads to playable results. But bitrate is silently
> > ignored by mencoder. no matter what vbitrate=xxxx specified, i always end
> > up with ca 850kbit/s.
>
> It obviously shouldn't ignore it. Please retry with "standard" mpeg4
> codec (which is known to work). If it doesn't change anything, that
> means that there's smth wrong with the options you gave to mencoder.
>
>
> Guillaume