• The patch allows you copy a SCTE-35 stream over as SCTE-35, when you're encoding with ffmpeg.
• The patch also adds the SCTE-35 Descriptor (CUEI / 0x49455543) , just to be fancy.
• The patch adds only seven lines of code to two files, libavformat/mpegts.c and libavformat/mpegtsenc.c.
• Everything else works just like unpatched ffmpeg.

in five easy steps.

1. git clone https://github.com/superkabuki/FFmpeg_SCTE35.git

2. cd FFmpeg_SCTE35

3. ./configure --enable-shared --extra-version=-SuperKabuki-patch

   you can customize configure as needed.
   There are a lot of ffmpeg configure options available.
   The superkabuki patch doesn't require any special configure options.

4. make all

On OpenBSD use gmake instead of make.

5. sudo make install

Use it just like unpatched FFmpeg.

• I build my ffmpeg with libx265 enabled. --enable-libx265 --enable-nonfree

ffmpeg -copyts -i input.ts -map 0  -c:v libx265 -c:a aac -c:d copy -muxpreload 0 -muxdelay 0 output.ts

ffmpeg -copyts -ss 200 -i input.ts -map 0  -c copy -muxpreload 0 -muxdelay 0 output.ts

Notice the start time and duration have both changed by ~200 seconds.

ffmpeg -i input.ts -map 0:d -f data  -y output.bin