ptch it bro

patches/go-transcode-vaapi.patch

@@ -0,0 +1,63 @@
+diff --git a/hlsvod/transcode.go b/hlsvod/transcode.go
+index 1b04b00..12eb935 100644
+--- a/hlsvod/transcode.go
++++ b/hlsvod/transcode.go
+@@ -6,5 +6,6 @@ import (
+ 	"fmt"
+ 	"log"
++	"os"
+ 	"os/exec"
+ 	"path"
+ 	"strings"
+@@ -56,6 +57,16 @@ func TranscodeSegments(ctx context.Context, ffmpegBinary string, config Transcod
+ 		}...)
+ 	}
+ 
++	// Decode and filter on the GPU when a VAAPI render device is configured.
++	// This is opt-in so upstream's software behavior remains available.
++	vaapiDevice := os.Getenv("TRANSCODE_VAAPI_DEVICE")
++	if vaapiDevice != "" {
++		args = append(args, []string{
++			"-init_hw_device", "vaapi=va:" + vaapiDevice,
++			"-filter_hw_device", "va", "-hwaccel", "vaapi", "-hwaccel_output_format", "vaapi",
++		}...)
++	}
++
+ 	// Input specs
+ 	args = append(args, []string{
+ 		"-i", config.InputFilePath, // Input file
+@@ -79,17 +89,26 @@ func TranscodeSegments(ctx context.Context, ffmpegBinary string, config Transcod
+ 		if profile.Width >= profile.Height {
+ 			scale = fmt.Sprintf("scale=-2:%d", profile.Height)
+ 		} else {
+ 			scale = fmt.Sprintf("scale=%d:-2", profile.Width)
+ 		}
+ 
+-		args = append(args, []string{
+-			"-vf", scale,
+-			"-c:v", "libx264",
+-			"-preset", "faster",
+-			"-profile:v", "high",
+-			"-level:v", "4.0",
+-			"-b:v", fmt.Sprintf("%dk", profile.Bitrate),
+-		}...)
++		if vaapiDevice != "" {
++			if profile.Width >= profile.Height {
++				scale = fmt.Sprintf("scale_vaapi=w=-2:h=%d:format=nv12", profile.Height)
++			} else {
++				scale = fmt.Sprintf("scale_vaapi=w=%d:h=-2:format=nv12", profile.Width)
++			}
++			args = append(args, []string{
++				"-vf", scale, "-c:v", "h264_vaapi", "-profile:v", "high",
++				"-level:v", "4.0", "-b:v", fmt.Sprintf("%dk", profile.Bitrate),
++			}...)
++		} else {
++			args = append(args, []string{
++				"-vf", scale, "-c:v", "libx264", "-preset", "faster",
++				"-profile:v", "high", "-level:v", "4.0",
++				"-b:v", fmt.Sprintf("%dk", profile.Bitrate),
++			}...)
++		}
+ 	}
+ 
+ 	// Audio specs