Good news! With the help of some great people, I was able to provide subtitles for the recording of my talk at the 28c3 conference. You can watch the video on youtube and switch on the subtitles as explained in the following screenshot.
Just click on the “CC” button at the left bottom of the video.
If you have any problems viewing the video, please let me know. Also, I highly appreciate it if you have feedback for me. Just send me an email or drop a comment here. Thanks a lot!