[FFmpeg-user] ffv1 level

[Dave Rice]

> On Oct 13, 2016, at 12:50 PM, Jim Shupert <jshupert at theppsgroup.com> wrote:
> 
> if one does not declare a level or a gop  what is the default
> 
> meaning
> 
> 
> ffmpeg -i <input_video> \
>    -acodec  copy       \
>    -vcodec  ffv1       \
>    -level   3          \
>    -coder   1          \
>    -context 1          \
>    -g       1          \
>    <output_video>
> 
> 
> -level   3
> declares   , ffv1 vers 3
> -g       1
> declares a gop of 1
> 
> what is the default if not declared
> 
> ffmpeg -i <input_video> \
>    -acodec  copy       \
>    -vcodec  ffv1       \
>    -coder   1          \
>    <output_video>

From running your example command and examining the output via:
ffmpeg -debug 1 -i output.mkv -f null -

The default gop size appears to be 12.

Dave Rice