render

type Capability struct {
	// Available reports that the dvdvideo demuxer and all required options were found.
	Available bool
	// Version is a bounded first line from FFmpeg's version output.
	Version string
	// Options contains the required dvdvideo options observed by the probe.
	Options []string
}

type ExecRunner struct{}

type FrameRequest struct {
	// SourcePath is the host filesystem path of the extracted VIDEO_TS directory.
	SourcePath string
	// VTS selects zero for the manager domain or 1 through 99 for a title set.
	VTS int
	// LanguageUnit is the one-based FFmpeg dvdvideo language-unit index.
	LanguageUnit int
	// PGC is the one-based menu program-chain index.
	PGC int
	// Program is the one-based program index within PGC.
	Program int
	// Target is the non-negative seek offset within the selected program.
	Target time.Duration
	// Deinterlace enables FFmpeg's bwdif filter before frame extraction.
	Deinterlace bool
}

type Output struct {
	// Stdout contains retained output up to the requested limit.
	Stdout []byte
	// Stderr contains retained diagnostics up to MaxDiagnosticBytes.
	Stderr []byte
}

type Runner interface {
	// Run invokes executable directly with discrete args and bounded output.
	Run(ctx context.Context, executable string, args []string, stdoutLimit int) (Output, error)
}