diff --git a/internal/encoder/encoder.go b/internal/encoder/encoder.go
new file mode 100644
index 0000000..d3f92e8
--- /dev/null
+++ b/internal/encoder/encoder.go
@@ -0,0 +1,159 @@
+package encoder
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strconv"
+	"strings"
+
+	"videnc-vibe/pkg/types"
+)
+
+type Encoder struct {
+	ffmpegPath  string
+	opusencPath string
+}
+
+func New() *Encoder {
+	return &Encoder{
+		ffmpegPath:  "ffmpeg",
+		opusencPath: "opusenc",
+	}
+}
+
+func (e *Encoder) CheckDeps() error {
+	if _, err := exec.LookPath(e.ffmpegPath); err != nil {
+		return fmt.Errorf("ffmpeg not found")
+	}
+	if _, err := exec.LookPath(e.opusencPath); err != nil {
+		return fmt.Errorf("opusenc not found")
+	}
+	return nil
+}
+
+func (e *Encoder) GetMediaInfo(path string) (width, height int, err error) {
+	cmd := exec.Command(e.ffmpegPath, "-i", path, "-hide_banner")
+	output, _ := cmd.StderrPipe()
+	cmd.Start()
+
+	buf := make([]byte, 8192)
+	n, _ := output.Read(buf)
+	output.Close()
+
+	var w, h int
+	fmt.Sscanf(string(buf[:n]), "%dx%d", &w, &h)
+	return w, h, nil
+}
+
+func (e *Encoder) Transcode(input string, job *types.Job, metadata *types.Metadata) error {
+	dir := filepath.Dir(input)
+	audioWavs, err := e.extractAudio(input, dir)
+	if err != nil {
+		return fmt.Errorf("extracting audio: %w", err)
+	}
+	defer e.cleanupWavs(audioWavs)
+
+	opusFiles, err := e.encodeOpus(audioWavs, dir)
+	if err != nil {
+		return fmt.Errorf("encoding opus: %w", err)
+	}
+	defer e.cleanupOpus(opusFiles)
+
+	if err := e.encodeVideo(input, opusFiles, job, metadata); err != nil {
+		return fmt.Errorf("encoding video: %w", err)
+	}
+
+	return nil
+}
+
+func (e *Encoder) extractAudio(input, dir string) ([]string, error) {
+	cmd := exec.Command(e.ffmpegPath, "-i", input,
+		"-vn", "-c:a", "pcm_s16le", "-ar", "48000",
+		"-f", "wav", filepath.Join(dir, "audio_%d.wav"))
+	if out, err := cmd.CombinedOutput(); err != nil {
+		return nil, fmt.Errorf("ffmpeg extract: %s %w", out, err)
+	}
+
+	matches, _ := filepath.Glob(filepath.Join(dir, "audio_*.wav"))
+	return matches, nil
+}
+
+func (e *Encoder) encodeOpus(wavs []string, dir string) ([]string, error) {
+	var opusFiles []string
+	for _, wav := range wavs {
+		out := strings.TrimSuffix(wav, ".wav") + ".opus"
+		cmd := exec.Command(e.opusencPath, "--bitrate", "128k", wav, out)
+		if out, err := cmd.CombinedOutput(); err != nil {
+			return nil, fmt.Errorf("opusenc: %s %w", out, err)
+		}
+		opusFiles = append(opusFiles, out)
+	}
+	return opusFiles, nil
+}
+
+func (e *Encoder) encodeVideo(input string, opusFiles []string, job *types.Job, metadata *types.Metadata) error {
+	dir := filepath.Dir(input)
+	outFile := filepath.Join(dir, "output.mkv")
+
+	svtParams := fmt.Sprintf("film-grain=10:film-grain-denoise=1:scd=1:qm-min=4:qm-max=15:preset=%d", job.Preset)
+
+	args := []string{
+		"-y",
+		"-i", input,
+		"-c:v", "libsvtav1",
+		"-crf", strconv.Itoa(job.CRF),
+		"-svtav1-params", svtParams,
+		"-pix_fmt", "yuv420p10le",
+		"-vf", "zscale=filter=spline36:mode=16:9",
+		"-c:a", "copy",
+		"-c:s", "copy",
+	}
+
+	for _, opus := range opusFiles {
+		args = append(args, "-i", opus)
+	}
+
+	args = append(args, "-map", "0:v")
+	args = append(args, "-map", "0:s?")
+
+	for i := range opusFiles {
+		args = append(args, "-map", fmt.Sprintf("%d:a", i+1))
+	}
+
+	args = append(args, "-metadata", fmt.Sprintf("TITLE=%s", metadata.Title))
+	args = append(args, "-metadata", fmt.Sprintf("DATE_RELEASED=%s", metadata.DateReleased))
+	args = append(args, "-metadata", fmt.Sprintf("IMDBID=%s", metadata.IMDBID))
+	args = append(args, "-metadata", fmt.Sprintf("ORIGINAL_MEDIA_TYPE=%s", metadata.OriginalMedia))
+
+	if metadata.IsSeries {
+		args = append(args, "-metadata", fmt.Sprintf("COLLECTION=%s", metadata.Collection))
+		args = append(args, "-metadata", fmt.Sprintf("SEASON=%s", metadata.Season))
+		args = append(args, "-metadata", fmt.Sprintf("EPISODE=%s", metadata.Episode))
+		if metadata.TVMazeID != "" {
+			args = append(args, "-metadata", fmt.Sprintf("TVMAZE_ID=%s", metadata.TVMazeID))
+		}
+	}
+
+	args = append(args, outFile)
+
+	cmd := exec.Command(e.ffmpegPath, args...)
+	if out, err := cmd.CombinedOutput(); err != nil {
+		return fmt.Errorf("ffmpeg encode: %s %w", out, err)
+	}
+
+	return nil
+}
+
+func (e *Encoder) cleanupWavs(files []string) {
+	for _, f := range files {
+		os.Remove(f)
+	}
+}
+
+func (e *Encoder) cleanupOpus(files []string) {
+	for _, f := range files {
+		os.Remove(f)
+	}
+}
diff --git a/internal/logger/logger.go b/internal/logger/logger.go
new file mode 100644
index 0000000..4789a90
--- /dev/null
+++ b/internal/logger/logger.go
@@ -0,0 +1,94 @@
+package logger
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+
+	"videnc-vibe/pkg/types"
+)
+
+type Logger struct {
+	infoPath   string
+	errorPath  string
+	structPath string
+	infoFile   *os.File
+	errorFile  *os.File
+	structFile *os.File
+}
+
+func New(logDir string) (*Logger, error) {
+	if err := os.MkdirAll(logDir, 0755); err != nil {
+		return nil, fmt.Errorf("creating log directory: %w", err)
+	}
+
+	now := time.Now().Format("2006-01-02")
+	infoPath := filepath.Join(logDir, fmt.Sprintf("info_%s.log", now))
+	errorPath := filepath.Join(logDir, fmt.Sprintf("error_%s.log", now))
+	structPath := filepath.Join(logDir, "structured.json")
+
+	infoFile, err := os.OpenFile(infoPath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	if err != nil {
+		return nil, fmt.Errorf("opening info log: %w", err)
+	}
+
+	errorFile, err := os.OpenFile(errorPath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	if err != nil {
+		return nil, fmt.Errorf("opening error log: %w", err)
+	}
+
+	structFile, err := os.OpenFile(structPath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	if err != nil {
+		return nil, fmt.Errorf("opening structured log: %w", err)
+	}
+
+	return &Logger{
+		infoPath:   infoPath,
+		errorPath:  errorPath,
+		structPath: structPath,
+		infoFile:   infoFile,
+		errorFile:  errorFile,
+		structFile: structFile,
+	}, nil
+}
+
+func (l *Logger) Info(message string) {
+	timestamp := time.Now().Format("2006-01-02 15:04:05")
+	entry := fmt.Sprintf("[%s] INFO: %s\n", timestamp, message)
+	l.infoFile.WriteString(entry)
+	l.writeStructured("info", message, "", "")
+}
+
+func (l *Logger) Error(message, err string) {
+	timestamp := time.Now().Format("2006-01-02 15:04:05")
+	entry := fmt.Sprintf("[%s] ERROR: %s - %s\n", timestamp, message, err)
+	l.errorFile.WriteString(entry)
+	l.writeStructured("error", message, err, "")
+}
+
+func (l *Logger) ErrorFile(file string, message, err string) {
+	timestamp := time.Now().Format("2006-01-02 15:04:05")
+	entry := fmt.Sprintf("[%s] ERROR: %s - %s (file: %s)\n", timestamp, message, err, file)
+	l.errorFile.WriteString(entry)
+	l.writeStructured("error", message, err, file)
+}
+
+func (l *Logger) writeStructured(level, message, err, file string) {
+	entry := types.LogEntry{
+		Timestamp: time.Now(),
+		Level:     level,
+		Message:   message,
+		Error:     err,
+		File:      file,
+	}
+	data, _ := json.Marshal(entry)
+	l.structFile.WriteString(string(data) + "\n")
+}
+
+func (l *Logger) Close() {
+	l.infoFile.Close()
+	l.errorFile.Close()
+	l.structFile.Close()
+}
diff --git a/internal/mover/mover.go b/internal/mover/mover.go
new file mode 100644
index 0000000..ff0cac0
--- /dev/null
+++ b/internal/mover/mover.go
@@ -0,0 +1,42 @@
+package mover
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+func MoveToOutput(input, outputDir string) error {
+	if err := os.MkdirAll(outputDir, 0755); err != nil {
+		return fmt.Errorf("creating output dir: %w", err)
+	}
+	filename := filepath.Base(input)
+	dest := filepath.Join(outputDir, filename)
+	return os.Rename(input, dest)
+}
+
+func MoveToFailed(input, failedDir string) error {
+	if err := os.MkdirAll(failedDir, 0755); err != nil {
+		return fmt.Errorf("creating failed dir: %w", err)
+	}
+	filename := filepath.Base(input)
+	dest := filepath.Join(failedDir, filename)
+	return os.Rename(input, dest)
+}
+
+func MoveToOriginals(input, originalsDir string) error {
+	if err := os.MkdirAll(originalsDir, 0755); err != nil {
+		return fmt.Errorf("creating originals dir: %w", err)
+	}
+	filename := filepath.Base(input)
+	dest := filepath.Join(originalsDir, filename)
+	return os.Rename(input, dest)
+}
+
+func Delete(path string) error {
+	return os.Remove(path)
+}
+
+func Rename(source, dest string) error {
+	return os.Rename(source, dest)
+}
diff --git a/internal/watcher/watcher.go b/internal/watcher/watcher.go
new file mode 100644
index 0000000..61f8b13
--- /dev/null
+++ b/internal/watcher/watcher.go
@@ -0,0 +1,66 @@
+package watcher
+
+import (
+	"fmt"
+	"path/filepath"
+	"time"
+
+	"videnc-vibe/pkg/types"
+)
+
+type Watcher struct {
+	inputDir string
+	interval time.Duration
+}
+
+func New(inputDir string, intervalSeconds int) *Watcher {
+	interval := time.Duration(intervalSeconds) * time.Second
+	if interval < 10*time.Second {
+		interval = 10 * time.Second
+	}
+	if interval > 30*time.Second {
+		interval = 30 * time.Second
+	}
+	return &Watcher{
+		inputDir: inputDir,
+		interval: interval,
+	}
+}
+
+func (w *Watcher) Start(processFn func(string) error, done chan struct{}) {
+	ticker := time.NewTicker(w.interval)
+	defer ticker.Stop()
+
+	w.scanAndProcess(processFn)
+
+	for {
+		select {
+		case <-done:
+			return
+		case <-ticker.C:
+			w.scanAndProcess(processFn)
+		}
+	}
+}
+
+func (w *Watcher) scanAndProcess(processFn func(string) error) {
+	files, err := filepath.Glob(filepath.Join(w.inputDir, "*.mkv"))
+	if err != nil {
+		fmt.Printf("Error scanning input directory: %v\n", err)
+		return
+	}
+
+	for _, file := range files {
+		if err := processFn(file); err != nil {
+			fmt.Printf("Error processing %s: %v\n", file, err)
+		}
+	}
+}
+
+func DetectMediaType(width, height int) types.MediaType {
+	pixels := width * height
+	if pixels < 600000 {
+		return types.MediaTypeDVD
+	}
+	return types.MediaTypeBluRay
+}