[MEncoder-users] removing duplicate frames from avi mp4 source file

[L. Lee]

Most of what I encode has to incorporate some kind of pullup, but when the
duplicates are consistent, I can use "-vf framestep=2...". In other cases I
force the  frame rate, such as "-fps 30000/1001 -ofps 24000/1001 -mc 0.1".
That in of itself is not enough to accomplish pullup, but you might use the
strategy if no pullup is required (maybe "-fps 15 -ofps 15" or something).

Laine Lee


On 9/8/11 8:27 PM, "ted morris" <ted.morris at gmail.com> wrote:

> Greetings,
> 
> I have these really big *.avi contained mp4 video files,
> that were originally captured via OpenRTSP/live555 @
> 15 fps. (1970x1440). x 1 hr .
> 
> mencoder determines that there are duplicate frames
> and then proceeds to encode the duplicates. Then, when playing
> back the video, the video has these annoying little pauses
> due to the duplicate frames -- and ofcourse makes the file
> larger than it should be (~3 GB).
> 
> I tried the -noencodeduplicat option but I get the same
> result. I also use the -nosound option because
> the videos don't have audio.(nor do I want it).
> 
> I would prefer to still use lavc (ffmpeg codec) for my
> processed avi file.
> 
> Would anyone know a trick to get rid of the duplicate
> frames?
> 
> thanks for any suggestions in advance,
> 
> t
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