Summarized changelog:

• Fix warning: comparison of integers of different signs.
• Fix undefined behavior: index out of bounds.
• Fix data race.
• x86inc: Fix warnings when using nasm 2.15.
• Remove code for non-positive f_ip_factor/f_pb_factor (currently they are guaranteed to be positive).
• Fix compilation with nasm 2.15.

1. Encoded H264 video from raw frames using x264 binary.
2. Transcoded VC-1 video to H264 with yuv420p10 pixel format using ffmpeg and tested output in mpv and VLC.
3. Rebuilt revdeps:
   • avidemux
   • ffmpeg
   • gst-plugins-ugly
   • gstreamer-1.0-plugins-ugly
   • handbrake
   • obs-studio
   • vlc