"I had hoped for a long time that the fork situation would resolve and both sides somehow merging back into one team. All the Libav developers joining FFmpeg again. But even now as the last distributions are preparing to remove Libav, still theres no hint of that happening. Maybe even the opposite."
and
"Do friendly merges, and if you like do hostile merges. Its all up to you now!"
That isn't "a ton of derogatory remarks".
libav is working to the same goal as ffmpeg. The split is due to idealism and politics, not due to the goal of the project. I'm not going to pick a side in this, as interpersonal relationships are impossible to accurately gauge from an external viewpoint.
I'm not sure if you have a personal stake in this argument, and I apologize, and sympathize if you do.
Best of luck in the future Mr Niedermayer. Thanks for all the work over the years.