feat: 인코딩 로직 작성

src/main/java/com/j9/bestmoments/service/FfmpegService.java

@@ -0,0 +1,77 @@
+package com.j9.bestmoments.service;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Service;
+import java.io.IOException;
+
+@Slf4j
+@Service
+public class FfmpegService {
+
+    @Value("${ffmpeg.path}")
+    private String ffmpegPath;
+
+    public void encodeVideo(String inputFilePath, String outputFilePath, String resolution) {
+        try {
+            ProcessBuilder processBuilder = new ProcessBuilder(
+                    ffmpegPath, "-i", inputFilePath, "-s", resolution, "-codec:v", "libx264", outputFilePath
+            );
+
+            Process process = processBuilder.start();
+
+            // 로그 스트림 처리
+            try (BufferedReader reader = new BufferedReader(new InputStreamReader(process.getErrorStream()))) {
+                String line;
+                while ((line = reader.readLine()) != null) {
+                    System.out.println(line);  // 로그를 출력하거나 저장할 수 있습니다.
+                }
+            }
+
+            int exitCode = process.waitFor();
+            if (exitCode != 0) {
+                throw new RuntimeException("비디오 인코딩 실패");
+            }
+
+            log.info("인코딩 완료 : {}", outputFilePath);
+        } catch (IOException | InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public String getVideoResolution(String inputFilePath) {
+        try {
+            ProcessBuilder processBuilder = new ProcessBuilder(
+                    ffmpegPath, "-i", inputFilePath
+            );
+
+            Process process = processBuilder.start();
+            BufferedReader reader = new BufferedReader(new InputStreamReader(process.getErrorStream()));
+            String line;
+            String resolution = null;
+
+            // FFmpeg의 출력에서 해상도를 파싱하여 추출
+            while ((line = reader.readLine()) != null) {
+                if (line.contains("Video:")) {
+                    String[] parts = line.split(",");
+                    for (String part : parts) {
+                        if (part.trim().matches("\\d{2,}x\\d{2,}")) {
+                            resolution = part.trim(); // 해상도 부분을 찾음
+                            break;
+                        }
+                    }
+                }
+            }
+
+            process.waitFor();
+            return resolution;
+
+        } catch (Exception e) {
+            e.printStackTrace();
+            return "해상도 파싱 실패";
+        }
+    }
+
+}