For context, Putin released a video claiming he is sitting with officials and leaders of the world in talks to have a peaceful resolution. But the video shown is fake as you can see Putin's hand move through the mic.
Zelenskyy has been stating that Putin has been in hiding since the invasion while he is on the front lines willing to fight to the death. He proves he is really willing to have resolution talks in person by releasing a video of him moving a real mic.