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29 lines
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1.5 KiB
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29 lines
No EOL
1.5 KiB
Markdown
---
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title: "How to trim a video using FFMPEG"
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date: 2022-09-28T18:46:32-04:00
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draft: false
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tags: ["Audio-Video"]
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math: false
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---
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Recently I came across a video that I wanted to split up into multiple files. Given my love for `ffmpeg` the video/audio swiss armyknife, I knew there had to be a solution for cutting a video on the terminal. Luckily on [AskUbuntu](https://askubuntu.com/a/56044), Luis Alvarado provides a command snippet. This post will go into slightly more detail on the flags used in the command
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```bash
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ffmpeg -ss 00:00:00 \
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-t 00:30:00 \
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-i input.mp4 \
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-vcodec copy \
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-acodec copy \
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output.mp4
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```
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| Command | Description |
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| --------- | ------------------------------------------------------------ |
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| `-ss` | Position within the input file. Most file formats do not allow exact seeking, so ffmpeg will pick the closest seek point. Format is in *time duration* notation. |
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| `-t` | Limits the duration of data read from the input file. Format is in *time duration* notation. |
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| `-vcodec` | Format used to transcribe the video. Use `copy` to not transcribe to a different format. |
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| `-acodec` | Format used to transcribe the audio. Use `copy` to not transcribe to a different format. |
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Time duration notation follows the format `<HH>:<MM>:<SS>` where `HH` is the number of hours, `MM` is the number of minutes, and `SS` is the number of seconds.
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For this command in general, the output video length would be the same time duration as specified in the `-t` flag. |