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How can I use one streamwriter to write multiple videos? #4132

@Z-NAVY

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@Z-NAVY

🚀 The feature

Use one streamwriter to write multiple videos.

Motivation, pitch

Can the streamwriter support writing multiple videos using the same object, with each video corresponding to a different stream when I use gpu to encode? In current situation, this result in writing to the same buffer, ultimately producing one video. How can I do this? This can avoid the overhead caused by multiple initializations and destructions of the streamwriter.

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