How to Capture Time Parameter in ffmpeg Output

In this article, we will discuss how to capture a specific time parameter from an ffmpeg output. We will use the ffmpeg command to process an .flac audio file, and we will explain the key concepts, subtopics, and provide detailed context.

Prerequisites

To follow this article, you need to have the following:

• An .flac audio file named itest.flac
• Installed ffmpeg on your system

Capture Time Parameter with ffmpeg

The ffmpeg command-line tool is a powerful multimedia processing software. It can be used to transcode media files between various formats, extract audio or video streams, and perform various other tasks. In this section, we will discuss how to capture a specific time parameter from an ffmpeg output.

Command to Capture a Specific Time Range

To capture a specific time range from an audio file using ffmpeg, you can use the following command:

 ffmpeg -i itest.flac -ss 00:00:10.31 -t 00:00:10 -c:a copy output.flac
 

Here, we are using the following options:

• -i itest.flac: Input file
• -ss 00:00:10.31: Start time (10 seconds and 31 milliseconds)
• -t 00:00:10: Duration of the output file (10 seconds)
• -c:a copy: Copy the audio codec without re-encoding

The output file will be named output.flac and will contain the audio data from the specified time range.

Capture Time Parameter from Command Output

If you want to capture the time parameter from the command output instead of creating a new file, you can use the following command:

 ffmpeg -i itest.flac -ss 00:00:10.31 -t 00:00:10 -print_format json -show_format "itest.json"
 

Here, we are using the following options:

• -print_format json: Output format as JSON
• -show_format itest.json: Output file name for the JSON output

The output file itest.json will contain the metadata of the specified time range, including the start time and duration.

In this article, we discussed how to capture a specific time parameter from an ffmpeg output using the command-line tool. We covered the key concepts, provided examples, and explained how to capture the time parameter from the command output instead of creating a new file.

References

• ffmpeg.org
• ffmpeg Documentation