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Add concat compatible files docs

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Joey Hafner 2023-03-28 09:45:24 -07:00
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docs/ffmpeg Notes.md
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@ -6,6 +6,7 @@
- [Adding ffmpeg Scripts to Windows SendTo Menu](#adding-ffmpeg-scripts-to-windows-sendto-menu) - [Adding ffmpeg Scripts to Windows SendTo Menu](#adding-ffmpeg-scripts-to-windows-sendto-menu)
- [Get Test Image with ffmpeg](#get-test-image-with-ffmpeg) - [Get Test Image with ffmpeg](#get-test-image-with-ffmpeg)
- [Batch-ify ffmpeg Command](#batch-ify-ffmpeg-command) - [Batch-ify ffmpeg Command](#batch-ify-ffmpeg-command)
- [Concatenate Compatible Files](#concatenate-compatible-files)
- [Add Metadata to File](#add-metadata-to-file) - [Add Metadata to File](#add-metadata-to-file)
- [Create Slow-mo](#create-slow-mo) - [Create Slow-mo](#create-slow-mo)
- [Transcode Profiles](#transcode-profiles) - [Transcode Profiles](#transcode-profiles)
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done done
``` ```
# Concatenate Compatible Files
If two (or more) recordings should be joined, and are compatible (same codec, resolution), you can concatenate them in two steps:
1. Write a `cat.txt` file with the filenames to be concatenated, preceded with the keyword `file`.
For example:
```
file 'part1.mp4'
file 'part2.mp4'
file 'part3.mp4'
```
2. Run ffmpeg with the concat demuxer: `ffmpeg -f concat -safe 0 -i cat.txt -c copy "$output"`
# Add Metadata to File # Add Metadata to File
ffmpeg can add metadata to files using the `-metadata` flag. In the profiles described below, this is used to add a comment describing the profile used to create the file (e.g. `-metadata comment="x264 720p CRF 27"`). ffmpeg can add metadata to files using the `-metadata` flag. In the profiles described below, this is used to add a comment describing the profile used to create the file (e.g. `-metadata comment="x264 720p CRF 27"`).