ffrewrite.md

Ffmpeg rewriting SCTE-35 packets.

As of 2.4.55, threefive can parse the packet either way.

I love you msnbc, (please don't get mad at me for using your SCTE-35)

Let me preface this by saying this is not a criticism of ffmpeg.
In my experience, ffmpeg tends to do things the correct way,
and I have no problem adapting to them.

My goal is to keep threefive as flexible and compatible as possible.

This is what I usually get for SCTE-35 packets.

• four byte header
• \x00
• SCTE-35 Cue
• padding to 188 bytes

ffmpeg -copyts -i msnbc-latest.ts -map 0 -c copy msnbc-latest-ffmpeg.ts

Now ffmpeg changes that packet to look like this.

• four byte header + AFC
• padding to 188 bytes
• PES header
• SCTE-35 Cue

As of 2.4.55, threefive can parse the packet either way.