Add examples

Signed-off-by: James P. Ketrenos <james.p.ketrenos@intel.com>

README.md

@@ -21,6 +21,86 @@ docker run \
   intel-media-ffmpeg
 ```
 
+# Usage examples
+
+Download stream:
+
+```bash
+mkdir media
+cd media
+wget https://fate-suite.libav.org/h264-conformance/AUD_MW_E.264
+cd ..
+```
+
+## Decode
+
+H264 video decode and save as raw file:
+
+### Connect to container
+```bash
+docker run \
+  --rm \
+  --device=/dev/dri \
+  --volume $(pwd)/media:/media \
+  -it \
+  intel-media-ffmpeg \
+  ffmpeg -hwaccel qsv -c:v h264_qsv -i /media/AUD_MW_E.264  \
+       -vf hwdownload,format=nv12 -pix_fmt yuv420p          \
+       /media/AUD_MW.yuv
+```
+
+### Encode
+
+Encode a 10 frames of 720p raw input as H264 with 5Mbps using VBR mode:
+
+```bash
+docker run \
+  --rm \
+  --device=/dev/dri \
+  --volume $(pwd)/media:/media \
+  -it \
+  intel-media-ffmpeg \
+  ffmpeg -loglevel debug -init_hw_device qsv=hw      \
+       -filter_hw_device hw -f rawvideo -pix_fmt     \
+       yuv420p -s:v 176x144 -i /media/AUD_MW.yuv -vf \
+       hwupload=extra_hw_frames=64,format=qsv        \
+       -c:v h264_qsv -b:v 5M -frames:v 10            \
+       -y /media/AUD_MW_E.h264
+```
+
+### Transcode
+
+H264 decode && H265 encode with 5Mbps using VBR
+
+```bash
+docker run \
+  --rm \
+  --device=/dev/dri \
+  --volume $(pwd)/media:/media \
+  -it \
+  intel-media-ffmpeg \
+  ffmpeg -hwaccel qsv -c:v h264_qsv -i /media/AUD_MW_E.264 \
+       -c:v hevc_qsv -b:v 5M AUD_MW_E.hevc
+```
+
+1:N transcoding
+
+```bash
+docker run \
+  --rm \
+  --device=/dev/dri \
+  --volume $(pwd)/media:/media \
+  -it \
+  intel-media-ffmpeg \
+  ffmpeg -hwaccel qsv -c:v h264_qsv                    \
+    -i /media/AUD_MW_E.264                             \
+    -filter_complex "split=2[s1][s2];                  \
+                     [s1]scale_qsv=1280:720[o1];       \
+                     [s2]vpp_qsv=framerate=60[o2]"     \
+    -map [o1] -c:v h264_qsv -b:v 5M /media/5M.mp4      \
+    -map [o2] -c:v h264_qsv -b:v 4M /media/4M60FPS.h264
+```
+
 ## Developing
 
 The Dockerfile itself is constructed from re-usable snippets,