fix: replace broken ffmpeg webp encoder with native gif2webp bypass

helper/media_convert.go

@@ -35,18 +35,21 @@ func ConvertImageToWebp(imgData []byte) ([]byte, error) {
 }
 
 func ConvertVideoToWebp(vidData []byte) ([]byte, error) {
-	webpPath := filepath.Join("temp", fmt.Sprintf("%s.webp", uuid.New().String()))
+	id := uuid.New().String()
+	gifPath := filepath.Join("temp", fmt.Sprintf("%s.gif", id))
+	webpPath := filepath.Join("temp", fmt.Sprintf("%s.webp", id))
+
+	defer os.Remove(gifPath)
 	defer os.Remove(webpPath)
 
 	ffmpegCmd := exec.Command("ffmpeg",
 		"-y", "-hide_banner", "-loglevel", "error",
-		"-i", "pipe:0", "-f", "mp4",
+		"-i", "pipe:0",
 		"-ss", "00:00:00", "-t", "00:00:15",
 		"-vf", "fps=10,scale=720:-1:flags=lanczos:force_original_aspect_ratio=increase,crop=512:512,pad=512:512:(ow-iw)/2:(oh-ih)/2:color=#00000000,setsar=1",
-		"-compression_level", "6",
-		"-q:v", "60", "-loop", "0",
-		"-preset", "picture", "-an",
-		"-f", "webp", webpPath,
+		"-loop", "0",
+		"-an",
+		"-f", "gif", gifPath,
 	)
 	var stderr bytes.Buffer
 	ffmpegCmd.Stderr = &stderr
@@ -55,5 +58,12 @@ func ConvertVideoToWebp(vidData []byte) ([]byte, error) {
 		return nil, fmt.Errorf("ffmpeg failed: %w, stderr: %s", err, stderr.String())
 	}
 
+	gif2webpCmd := exec.Command("gif2webp", "-quiet", "-q", "60", "-m", "6", gifPath, "-o", webpPath)
+	var g2wStderr bytes.Buffer
+	gif2webpCmd.Stderr = &g2wStderr
+	if err := gif2webpCmd.Run(); err != nil {
+		return nil, fmt.Errorf("gif2webp failed: %w, stderr: %s", err, g2wStderr.String())
+	}
+
 	return os.ReadFile(webpPath)
 }