This release improves support for MKV files by fixing an issue that made ISO 639-2/B language codes not to be set correctly, which affected Hebrew, Indonesian, Japanese, and Yiddish languages, and improves Intel QSV memory footprint and H.265 memory buffer size as needed by newer Intel Media SDK. HandBrake 1.3.3 also adds better support for SSA (SubStation Alpha) subtitles by fixing a handling issue of overlapping imported SSA subtitles and improving support for out-of-order SSA subtitles. Also improved is Flatpak support, especially the build efficiency of the Intel QSV Flatpak plugin.