[MEncoder-users] Neewbie question : need to resample avi file from 15fps to 25fps

[Dave P]

On Mon, Jan 4, 2010 at 11:49, 7willows <7willows at dsl.pipex.com> wrote:
> On 04/01/2010 15:13, 7willows wrote:
>>
>> Hi,
>>
>>
>> I have twelve AVI files which were recorded at 640x480 @ 15fps recorded on
>> my Nikon L20 camera which I want to add onto a DVD with AVI files from my
>> Canon MV650 which records at 25fps.
>>
>> I have had a look through the MEncoder documentation but can not find what
>> I need.
>>
>> Could you advise on the options required to resample the 640x480 @15fps to
>> 640x480 @25fps ?
>>
>> TIA
>>
>>
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>> MEncoder-users at mplayerhq.hu
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>>
> Hi,
>
> Thanks for all the feedback, I tried the following and get the output below
>
>
> $ mencoder -fps 15 oldfile.avi -ofps 30 -o newfile.avi -vf harddup
> MEncoder UNKNOWN-4.4.1 (C) 2000-2009 MPlayer Team
> success: format 0 data 0x0 - 0x90000
> AVI file format detected.
> [aviheader] Video stream found, -vid 0
> [aviheader] Video stream found, -vid 1
> VIDEO: [MJPG] 640x480 24bpp 15.000 fps 4205.1 kbps (513.3 kbyte/s)
> [V] filefmt:3 fourcc:0x47504A4D size:640x480 fps:15.000 ftime=0.0667
> Input fps will be interpreted as 15.000 instead
>
> No audio encoder (-oac) selected. Select one (see -oac help) or use -nosound
>
> Exiting...
>
>
> Checking the file properties on with SMPlayer on Ubuntu 9.10, it reports the
> audio
> information as
> Format           85
> Bitrate          32kbps
> Rate             16000Hz
> Selected Codec   mp3
>
> When I have tried various options and managed only to create a new file but
> with no audio.
>
> Can you point me in the right direction
>
> TIA
>
>
>
> --
> Russell                           7willows at dsl.pipex.com

You're almost there.  You need to specify which audio and video codecs
to use.  While you RTFM from top to bottom, you may notice others
things you might want to specify, such as audio and video bitrates,
audio sample rate, etc.