Conferences for developers with video presentations

To develop it is necessary to keep up with the times, and a good place to learn something new and get valuable experience - concerts and master classes. I decided to collect some meaningful conferences and their video channels with performances. I tried not to include small conferences that were too remote from programming (for PM and marketing), or not uploading videos.

Unfortunately, some conferences

order third-party people who put everything on their channel along with other conferences or personal stuff;
They build in their website without the possibility of sharing, and sometimes even close the key on a turnkey basis or with payment;
do not spread materials and three years ago;
they do not care about the quality of the video - the dark room, the presentation is completely invisible, there is no installation, there are no problems with sound, there are no questions, etc.

It is clear that the organizers have their own business model and opportunities, but I want to unify and motivate the organizers to treat the reports and their authors with respect, upload videos over time, synchronize with the slides.

With video

No normal video