[FFmpeg-devel] How to pass metadata between filters

[wm4]

On Fri, 9 Feb 2018 18:43:11 +0000
Mujib Haider <mujibh at xilinx.com> wrote:

> Dear ffmpeg-devel,
> 
> I have a general question about the capabilities of avfilter.
> 
> Is it possible to send meta-data between avfilters? Specifically, I want to create a filter to take a single input image, and produce a single output image along with metadata which encodes information about the image.

Currently only via the fields AVFrames provides. There's
AVFrame.metadata, and also new side data types could be added for
important enough things.