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package video
import (
"context"
"fmt"
)
// GenerateSelectedVideos animates gallery PNG files into MP4 clips using
// Google's Veo model. It processes pages sequentially (Veo generation is slow
// and API quotas make parallelism impractical).
//
// apiKey is the Google/Gemini API key passed by the caller.
// selectedPaths contains the absolute (or relative) paths of the PNGs to animate.
//
// Each page prints a "Generating…" line before the API call and a "Video saved:"
// line with the output path on success. The MP4 is written next to its source
// PNG so that gallery images and their videos stay in the same directory.
// The function stops and returns on the first error so the caller can log it.
func GenerateSelectedVideos(apiKey string, selectedPaths []string) error {
if len(selectedPaths) == 0 {
return nil
}
gen, err := NewVeoGenerator(apiKey)
if err != nil {
return fmt.Errorf("video: initialising Veo generator: %w", err)
}
ctx := context.Background()
for _, imgPath := range selectedPaths {
fmt.Printf("Generating video for: %s\n", imgPath)
// GenerateVideoFromPath applies an operation-level deadline when ctx has none.
mp4Path, err := gen.GenerateVideoFromPath(ctx, imgPath)
if err != nil {
return fmt.Errorf("video: generating video for %s: %w", imgPath, err)
}
fmt.Printf("Video saved: %s\n", mp4Path)
}
return nil
}
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