How to use Python's ffmpy3 package to batch merge TS files into a single MP4 file.

Before reading, you need to know:

  • ffmpy3 is a Python wrapper for FFmpeg
  • ffmpy3 complies FFmpeg command line based on provided parameters and options

Using ffmpy3

Installing ffmpy3 Package

Install using pip:

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pip install ffmpy3

Simple ffmpy3 Example

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import ffmpy3
ff = ffmpy3.FFmpeg(
    inputs={'input_file': 'parameter1'},
    outputs={'output_file': 'parameter2'}
)

The final result is equivalent to entering in terminal:

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FFmpeg parameter1 -i input_file parameter2 output_file

Batch Merging TS Files

Directory Structure

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├───folder
│    python_file.py
│    file.txt
│    fileA.ts
│    fileB.ts
│    fileC.ts
│    fileD.ts
...

file.txt

Write the TS filenames in file.txt:

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file 'fileA.ts'
file 'fileB.ts'
file 'fileC.ts'
file 'fileD.ts'

Note:

  1. Use single quotes, not double quotes - the latter will cause errors!
  2. Use relative paths within the quotes

Python File

Use this code to batch merge TS files:

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ff = ffmpy3.FFmpeg(
        inputs={f'file.txt': '-f concat'},
        outputs={f'filename.mp4': '-c copy'}
)
ff.run()

The above code is equivalent to entering in terminal:

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FFmpeg -f concat -i file.txt -c copy filename.mp4