FFmpegScte-35patch

[superkabuki]

https://github.com/superkabuki/SuperKabuki_SCTE35patch

Super Kabuki SCTE-35 patch for FFmpeg.

...why?

If you work with SCTE-35 and you use ffmpeg,
having the SCTE-35 stream type 0x86 changed to bin data 0x06, makess life hard.

How does it work?

• The patch is only nine lines of code, it 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.
• Everything else works just like unpatched ffmpeg.

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Install

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 this as needed )

4. make all

5. sudo make install

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How to use:

Use it just like unpatched FFmpeg.

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Examples

1. Re-encode video to h.265, audio to aac, copy over the SCTE-35, and keep the timestamps.

ffmpeg -copyts -i input.ts -map 0  -c:v h265 -c:a aac -c:d copy -muxpreload 0 -muxdelay 0 output.ts

• original file
  

• ffmpeg command
  

• new file
  

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2. Copy all streams including SCTE-35, cut the first 200 seconds, and keep the timestamps.

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

• original file
  

• ffmpeg command
  

• new file
  

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

• old

 Duration: 00:04:56.30, start: 72667.595200, bitrate: 962 kb/s

• new

  Duration: 00:01:37.75, start: 72866.141867, bitrate: 962 kb/s

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