[FFmpeg-devel] Is a avfilter applied before encoding/decoding or after that?
mark at mdsh.com
Fri Nov 18 11:40:40 CET 2011
On 18/11/2011 07:07, Harry Ma wrote:
> Hi, All,
> I wonder when a avfilter is applied? is it applied before encoding/decoding
> or after that?
> could anyone give me a brief introduction how ffmpeg process a video: what
> happens to the pipe line from src input to the output sink?
> thanks very much.
avfilter is applied after decode and before encode, therefore avfilter
is applied to raw uncompressed  frames.
roughly (and simply), the process is:
acquire -> demux -> decode -> filter -> encode -> mux -> disperse
 if you consider yuv422, 420, 411 etc uncompressed
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