Extract audio clips by timestamp

Extracting audio clips by timestamp typically involves cutting or splitting an audio file based on start and end times you specify. Here’s a concise guide for different methods you can use:

Using Audacity (Free Audio Editor)

1. Open your audio file in Audacity.

2. Use the Selection Tool to highlight the section you want to extract by dragging over the waveform according to the timestamps.

3. Go to File > Export > Export Selected Audio.

4. Choose the format and save the clip.

Using FFmpeg (Command Line Tool)

FFmpeg is powerful for precise timestamp extraction.

Command structure:

bash
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ffmpeg -i input.mp3 -ss [start_time] -to [end_time] -c copy output_clip.mp3

• -ss = start time (format: HH:MM:SS or seconds)

• -to = end time (format: HH:MM:SS or seconds)

• -c copy copies the audio without re-encoding for speed and quality retention.

Example:

Extract audio from 00:01:30 to 00:02:00

bash
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ffmpeg -i input.mp3 -ss 00:01:30 -to 00:02:00 -c copy clip.mp3

Using Python (Pydub Library)

If you want to automate with Python:

python
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from pydub import AudioSegment

audio = AudioSegment.from_file("input.mp3")

start_ms = 90 * 1000  # 1 min 30 sec
end_ms = 120 * 1000   # 2 min

clip = audio[start_ms:end_ms]
clip.export("clip.mp3", format="mp3")

Would you like a more detailed tutorial or code snippet for any specific method?