diff --git a/README.md b/README.md
index f21b141..f6b6760 100644
--- a/README.md
+++ b/README.md
@@ -108,6 +108,22 @@ card 1: Q9000 [QuickCam Pro 9000], device 0: USB Audio [USB Audio]
 > `ffmpeg -loglevel error -i rtsp://garagecam.virtonline.eu:554/live3.sdp -c copy -f flv rtmp://peertube.virtonline.eu:1935/live/LIVE-STREAM-KEY`
 
 ### Live stream camera using h.264 hardware acceleration [VAAPI](https://trac.ffmpeg.org/wiki/Hardware/VAAPI) (e.g. on Intel iGPU)
+Check your GPU
+> `sudo lshw -C display`
+```
+  *-display                 
+       description: VGA compatible controller
+       product: Skylake GT2 [HD Graphics 520]
+       vendor: Intel Corporation
+       physical id: 2
+       bus info: pci@0000:00:02.0
+       version: 07
+       width: 64 bits
+       clock: 33MHz
+       capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
+       configuration: driver=i915 latency=0
+       resources: irq:134 memory:de000000-deffffff memory:c0000000-cfffffff ioport:f000(size=64) memory:c0000-dffff
+```
 Use the dockerized ffmpeg with precompiled vaapi support, adjust `/dev/video2`
 > `alias ffmpeg='docker run --rm -w $(pwd) -v $(pwd):$(pwd) --device=/dev/dri --device=/dev/video2 jrottenberg/ffmpeg:vaapi'`
 
@@ -115,7 +131,7 @@ Adjust `/dev/video2`, `-video_size 1920x1080 -framerate 60` and stream to peertu
 > `ffmpeg -hide_banner -y -f v4l2 -input_format mjpeg -video_size 1920x1080 -framerate 60 -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i /dev/video2 -vf 'scale_vaapi=format=nv12' -c:v h264_vaapi -b:v 10M -f flv rtmp://peertube.virtonline.eu:1935/live/LIVE-STREAM-KEY`
 
 ### Setup a systemd service for a non-stop streaming
-Adapt 'video_bitrate=3500000' to your Raspberry Pi (Zero W) max upload speed
+Adapt 'VIDEO_BITRATE="3500000"' to your max network upload speed
 ```
 sudo tee /etc/systemd/system/webcam-streamer.service <<EOF
 [Unit]
@@ -130,20 +146,22 @@ Type=simple
 Environment="HOME=/root"
 Environment=PEERTUBE_LIVE="rtmp://peertube.virtonline.eu:1935/live/9671cdd4-694d-4645-8d86-30df2297eb10"
 Environment=VIDEO_DEVICE="/dev/video0"
-Environment=VIDEO_CODEC="h264" # h264
-Environment=VIDEO_BITRATE="3500000" # 3500000 (3,5Mbit/s)
-Environment=VIDEO_RESOLUTION="1920x1080" # 1920x1080 (Full-HD)
-Environment=VIDEO_FRAMERATE="30" # 30
+Environment=VIDEO_CODEC="h264"
+Environment=VIDEO_BITRATE="3500000"
+Environment=VIDEO_RESOLUTION="1920x1080"
+Environment=VIDEO_FRAMERATE="30"
 
 ExecStartPre=-/usr/bin/env sh -c 'killall ffmpeg 2>/dev/null || true'
 ExecStartPre=-/usr/bin/env sh -c 'v4l2-ctl -d ${VIDEO_DEVICE} -c video_bitrate=${VIDEO_BITRATE}'
 
 ExecStart=/bin/bash -c 'ffmpeg -loglevel error \
-                                -f v4l2 -input_format ${VIDEO_CODEC} \
+                                -f v4l2 \
+								-input_format ${VIDEO_CODEC} \
                                 -video_size ${VIDEO_RESOLUTION} \
                                 -framerate ${VIDEO_FRAMERATE} \
                                 -i ${VIDEO_DEVICE} \
-                                -c copy -f flv \
+                                -c copy \
+								-f flv \
                                 -tune zerolatency \
                                 ${PEERTUBE_LIVE}'