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Branch one stream into several outputs with FFmpeg split and asplit
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What this guide covers
For editors and engineers who want to filter one clip several ways in one FFmpeg run, such as a cropped and a padded copy. You end with a plan for a branched filter graph. It is based on the FFmpeg manual and was not run.
More about this guide
Guide ID: art_01M6VMRPN5E1F07809MCJ0R3KX
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Guide title
Branch one stream into several outputs with FFmpeg split and asplit
Coverage
For editors and engineers who want to filter one clip several ways in one FFmpeg run, such as a cropped and a padded copy. You end with a plan for a branched filter graph. It is based on the FFmpeg manual and was not run.
Example
A hypothetical before-and-after grade comparison where one clip is split into two branches; the guide says it is an assembled idea and nothing was run.
Useful starting points
- Use split for video and asplit for audio, and give a count when you want more than two outputs.
- Every output label must be connected to a later filter or a mapped output file, or the graph reports an error.
- Syntax errors in a graph often come from missing separators between filter chains.
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