feat(thumb): adding option to define custom input argument for FFmpeg (#2657)

inventory/setting.go

@@ -430,6 +430,7 @@ var DefaultSettings = map[string]string{
 	"thumb_ffmpeg_max_size":                      "10737418240", // 10 GB
 	"thumb_ffmpeg_exts":                          "3g2,3gp,asf,asx,avi,divx,flv,m2ts,m2v,m4v,mkv,mov,mp4,mpeg,mpg,mts,mxf,ogv,rm,swf,webm,wmv",
 	"thumb_ffmpeg_seek":                          "00:00:01.00",
+	"thumb_ffmpeg_extra_args":                    "-hwaccel auto",
 	"thumb_libreoffice_path":                     "soffice",
 	"thumb_libreoffice_max_size":                 "78643200", // 75 MB
 	"thumb_libreoffice_enabled":                  "0",

pkg/setting/provider.go

@@ -202,6 +202,8 @@ type (
 		CustomNavItems(ctx context.Context) []CustomNavItem
 		// CustomHTML returns the custom HTML settings.
 		CustomHTML(ctx context.Context) *CustomHTML
+		// FFMpegExtraArgs returns the extra arguments of ffmpeg thumb generator.
+		FFMpegExtraArgs(ctx context.Context) string
 	}
 	UseFirstSiteUrlCtxKey = struct{}
 )
@@ -406,6 +408,10 @@ func (s *settingProvider) FFMpegThumbSeek(ctx context.Context) string {
 	return s.getString(ctx, "thumb_ffmpeg_seek", "00:00:01.00")
 }
 
+func (s *settingProvider) FFMpegExtraArgs(ctx context.Context) string {
+	return s.getString(ctx, "thumb_ffmpeg_extra_args", "")
+}
+
 func (s *settingProvider) FFMpegThumbMaxSize(ctx context.Context) int64 {
 	return s.getInt64(ctx, "thumb_ffmpeg_max_size", 10737418240)
 }

pkg/thumb/ffmpeg.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"os/exec"
 	"path/filepath"
+	"strings"
 	"time"
 
 	"github.com/cloudreve/Cloudreve/v4/pkg/filemanager/driver"
@@ -64,9 +65,22 @@ func (f *FfmpegGenerator) Generate(ctx context.Context, es entitysource.EntitySo
 	// Invoke ffmpeg
 	w, h := f.settings.ThumbSize(ctx)
 	scaleOpt := fmt.Sprintf("scale=%d:%d:force_original_aspect_ratio=decrease", w, h)
-	cmd := exec.CommandContext(ctx,
-		f.settings.FFMpegPath(ctx), "-ss", f.settings.FFMpegThumbSeek(ctx), "-i", input,
-		"-vf", scaleOpt, "-vframes", "1", tempOutputPath)
+	args := []string{
+		"-ss", f.settings.FFMpegThumbSeek(ctx),
+	}
+
+	extraArgs := f.settings.FFMpegExtraArgs(ctx)
+	if extraArgs != "" {
+		args = append(args, strings.Split(extraArgs, " ")...)
+	}
+
+	args = append(args, []string{
+		"-i", input,
+		"-vf", scaleOpt,
+		"-vframes", "1",
+		tempOutputPath,
+	}...)
+	cmd := exec.CommandContext(ctx, f.settings.FFMpegPath(ctx), args...)
 
 	// Redirect IO
 	var stdErr bytes.Buffer