ffmepg: aquiring target file size

[raschko]

Ive seen documentation for mencoder stating that using a negative bitrate will cause that program gestimate the required bitrate for the desired file size.

Though, my program of choice is ffmpeg for other reasons.
The question is, there is a command option for ffpeg -fs' that sets the desired file size.
However, when used ..it seems to cut video short once it has reached the desired size..and exiting.

it's either look for a command line dvd bitrate calculator, or am missing something in ffmpegs documentation.

Any help or ideas is appreciated.

the video source is mov..target ntsc dvd.


Raschko.

[45tripp]

The question is, there is a command option for ffpeg -fs' that sets the desired file size.
However, when used ..it seems to cut video short once it has reached the desired size..and exiting.

that's what it's meant to do.

it's either look for a command line dvd bitrate calculator, or am missing something in ffmpegs documentation.

You don't need a separate utility.
It's simple math,
you can write out the expressions yourself.

at the bottom of the page is a bitrate calculation formula
https://www.videohelp.com/calc.htm

gl

[raschko]

Had a feeling that was the case..throw a little hope in the mix and there I was.
thanks for showing me the calc.

Raschko