Mp4: mp4_start_key_frame directive. The directive enables including all frames from start time to the most recent key frame in the result. Those frames are removed from presentation timeline using mp4 edit lists. Edit lists are currently supported by popular players and browsers such as Chrome, Safari, QuickTime and ffmpeg. Among those not supporting them properly is Firefox[1]. Based on a patch by Tracey Jaquith, Internet Archive. [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1735300

# Copyright (C) Nginx, Inc.


if [ $USE_THREADS = YES ]; then

    if [ "$NGX_PLATFORM" = win32 ]; then
        cat << END

$0: --with-threads is not supported on Windows

END
        exit 1
    fi

    have=NGX_THREADS . auto/have
    CORE_DEPS="$CORE_DEPS $THREAD_POOL_DEPS"
    CORE_SRCS="$CORE_SRCS $THREAD_POOL_SRCS"
    CORE_LIBS="$CORE_LIBS -lpthread"
    NGX_LIBPTHREAD="-lpthread"
fi