[FFmpeg-devel] Gaining access to a encoder context in avformat?

Kevin Wheatley kevin.j.wheatley at gmail.com
Fri Feb 20 08:57:05 CET 2015

Sent on the go...

> On 19 Feb 2015, at 18:35, Michael Niedermayer <michaelni at gmx.at> wrote:
> theres no encoder, the data could instead come from another mov
> file or a binary encoder used by some user application with
> libavformat


Thanks for your response, I must be confused then. What I thought was based on the following.

I have say a set of image files that I want to encode as dnxhd in QuickTime, so ffmpeg sets up the encoder, and during each image's encoding the encoder needs some information such as if the movie is encoded with interlaced fields, and also the specifics of the resolution and bit rates there's a codec/compression Id associated with those settings. When writing the avid atoms, they also should have those same values encoded in them.

This is important as if instead of starting from image files we start from an existing movie with the atom present, we would not want to use values based on that atom, which is what s currently done, I wanted to find the dnxencoder structure to correctly populate the atom.


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