On the video front, the HandBrake 1.0.3 update addresses various issues and memory leaks for libav and OpenCL, improves sync for video streams that usually have a big delay, makes H.264 decoding work even in those cases where the initial GOP was dropped, and improves the 2-pass encoding, including for x265. Thanks to this new update, the libav library should now be able to open WMV sources, as well as to seek in MKV files that contain embedded subtitles. On the audio front, HandBrake 1.0.3 improves mapping of single channel layouts and libav audio sync with MP4 files that contain edit lists.