From 8ee0742297a0e595551454568793f4f68b8af340 Mon Sep 17 00:00:00 2001
From: cpu <cpu@virtonline.eu>
Date: Thu, 21 Dec 2023 01:24:59 +0100
Subject: [PATCH] added VAAPI acceleration

---
 README.md | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index cb57da9..1c810f7 100644
--- a/README.md
+++ b/README.md
@@ -120,7 +120,7 @@ Or using ffmpeg
 Compressed:       mjpeg :          Motion-JPEG : 160x120 176x144 320x240 352x288 640x480 800x600 960x720
 Raw       :     yuyv422 :           YUYV 4:2:2 : 160x120 176x144 320x240 352x288 640x480 800x600 960x720 1600x1200
 ```
-Lists all available recording devices
+Lists all available audio recording devices
 > `arecord -l`  
 ```
 **** List of CAPTURE Hardware Devices ****
@@ -140,8 +140,8 @@ Note: Does not work on Waylad ([What is Wayland in Linux Distros and Should You
 > `DISPLAY=:0 ffmpeg -hide_banner -f x11grab -framerate 5 -video_size 830x630 -i :0.0+50,95 -vf format=pix_fmts=yuv420p -vcodec libx264 -tune zerolatency -preset veryfast -f flv rtmp://peertube.virtonline.eu:1935/live/LIVE-STREAM-KEY`
 
 ### Live stream camera with sound and desktop as an overlay to peertube
-> `DISPLAY=:0` # select display (only if run remotely e.g. ssh)
-`ffmpeg -hide_banner` # do not output compile flags
+> `DISPLAY=:0` # select display (only if run remotely e.g. ssh)  
+`ffmpeg -hide_banner` # do not output compile flags  
 `-thread_queue_size 4096 -f pulse -ac 2 -i default` # audio input from PulseAudio  
 `-thread_queue_size 512 -f v4l2 -framerate 5 -video_size 1600x1200 -input_format yuyv422 -i /dev/video0` # camera input  
 `-thread_queue_size 512 -f x11grab -framerate 5 -video_size 830x630 -i :0.0+50,95` # 830x630 window from screen 0 with offset 50,95  
@@ -154,6 +154,13 @@ Note: Does not work on Waylad ([What is Wayland in Linux Distros and Should You
 ### Live stream white text on black background [ffmpeg create blank screen with text video](https://stackoverflow.com/questions/22710099/ffmpeg-create-blank-screen-with-text-video)
 > `ffmpeg -hide_banner -f lavfi -i color=size=320x240:rate=25:color=black -vf "drawtext=fontfile=/usr/share/fonts/truetype/freefont/FreeSans.ttf:fontsize=30:fontcolor=white:x=(w-text_w)/2:y=(h-text_h)/2:text='Stream začne čoskoro...'" -vcodec libx264 -preset slow -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)
+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'`
+
+Adjust `/dev/video2`, `-video_size 1920x1080 -framerate 60` and stream to peertube (if it can handle that much)
+> `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`
+
 Adjusting camera functions
 --------------------------
 Brightness, zoom, focus, etc, can be adjusted