Updated README.md with working ffmpeg instructions.
Signed-off-by: James P. Ketrenos <james.p.ketrenos@intel.com>
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James P. Ketrenos
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README.md
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README.md
@ -23,103 +23,120 @@ docker run \
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# Usage examples
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Download stream:
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## Download test content
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You will need some test content to run the following tests. You can download a
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test stream here:
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```bash
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mkdir media
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cd media
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wget https://fate-suite.libav.org/h264-conformance/AUD_MW_E.264
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cd ..
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```
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**NOTE:** In each of the following, if you have a multi-card host system
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you may need to change the qsv_device used by changing QSV_DEVICE
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to whichever node is connected to your hardware.
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You can find out the paths via:
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```
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ls -l /dev/dri/by-path/pci-*$(lspci | grep Intel.*Graphics | cut -d " " -f1)*
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```
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On my system, my Intel graphics adapter is /dev/dri/renderD129, so I use:
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```
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export QSV_DEVICE=/dev/dri/renderD129
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[ ! -e media ] && mkdir media
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wget -q -O media/AUD_MW_E.264 https://fate-suite.libav.org/h264-conformance/AUD_MW_E.264
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```
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## Decode
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H264 video decode and save as raw file:
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### Connect to container
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```bash
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QSV_DEVICE=${QSV_DEVICE:-/dev/dri/renderD128}
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IN_FILE=AUD_WM_E.264
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OUT_FILE=AUD_MW.yuv
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HOST_MEDIA=$(pwd)/media
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docker run \
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--rm \
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--device=/dev/dri \
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--volume $(pwd)/media:/media \
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--device /dev/dri \
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--volume ${HOST_MEDIA}:/media \
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-it \
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intel-media-ffmpeg \
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ffmpeg -hwaccel qsv -qsv_device ${QSV_DEVICE} \
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-c:v h264_qsv -i /media/AUD_MW_E.264 \
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ffmpeg \
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-hwaccel qsv \
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-qsv_device ${QSV_DEVICE:-/dev/dri/renderD128} \
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-c:v h264_qsv \
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-i /media/${IN_FILE} \
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-vf hwdownload,format=nv12 -pix_fmt yuv420p \
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/media/AUD_MW.yuv
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-y \
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/media/${OUT_FILE}
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```
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### Encode
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## Encode
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Encode a 10 frames of 720p raw input as H264 with 5Mbps using VBR mode:
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```bash
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QSV_DEVICE=${QSV_DEVICE:-/dev/dri/renderD128}
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IN_FILE=AUD_MW.yuv
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OUT_FILE=AUD_MW_E.h264
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HOST_MEDIA=$(pwd)/media
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docker run \
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--rm \
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--device /dev/dri \
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--volume ${HOST_MEDIA}:/media \
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-it \
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intel-media-ffmpeg \
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ffmpeg \
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-loglevel debug \
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-init_hw_device vaapi=va:${QSV_DEVICE:-/dev/dri/renderD128} \
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-init_hw_device qsv=hw@va \
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-filter_hw_device hw \
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-f rawvideo \
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-pix_fmt yuv420p \
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-s:v 176x144 \
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-i /media/${IN_FILE} \
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-vf hwupload=extra_hw_frames=64,format=qsv \
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-c:v h264_qsv \
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-b:v 5M \
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-frames:v 10 \
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-y \
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/media/${OUT_FILE}
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```
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## Transcode
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### AVC (H.264) => HEVC (H.265) with 5Mbps using VBR
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```bash
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IN_FILE=AUD_MW_E.264
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OUT_FILE=AUD_MW_E.hevc
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HOST_MEDIA=$(pwd)/media
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docker run \
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--rm \
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--device=/dev/dri \
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--volume $(pwd)/media:/media \
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--volume ${HOST_MEDIA}:/media \
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-it \
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intel-media-ffmpeg \
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ffmpeg -loglevel debug -init_hw_device qsv=hw \
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-filter_hw_device hw -f rawvideo -pix_fmt \
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yuv420p -s:v 176x144 -i /media/AUD_MW.yuv -vf \
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hwupload=extra_hw_frames=64,format=qsv \
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-c:v h264_qsv -b:v 5M -frames:v 10 \
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-y /media/AUD_MW_E.h264
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ffmpeg \
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-loglevel debug \
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-hwaccel qsv \
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-qsv_device ${QSV_DEVICE:-/dev/dri/renderD128} \
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-c:v h264_qsv \
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-i /media/"${IN_FILE}" \
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-c:v hevc_qsv \
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-b:v 5M \
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-y \
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/media/${OUT_FILE}
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```
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### Transcode
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H264 decode && H265 encode with 5Mbps using VBR
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### 1:N transcoding
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```bash
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QSV_DEVICE=${QSV_DEVICE:-/dev/dri/renderD128}
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IN_FILE=AUD_MW_E.264
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OUT_FILE_BASE=AUD_1N_
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HOST_MEDIA=$(pwd)/media
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docker run \
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--rm \
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--device=/dev/dri \
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--volume $(pwd)/media:/media \
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--volume ${HOST_MEDIA}:/media \
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-it \
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intel-media-ffmpeg \
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ffmpeg -hwaccel qsv -qsv_device ${QSV_DEVICE} \
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-c:v h264_qsv -i /media/AUD_MW_E.264 \
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-c:v hevc_qsv -b:v 5M AUD_MW_E.hevc
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```
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1:N transcoding
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```bash
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QSV_DEVICE=${QSV_DEVICE:-/dev/dri/renderD128}
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docker run \
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--rm \
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--device=/dev/dri \
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--volume $(pwd)/media:/media \
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-it \
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intel-media-ffmpeg \
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ffmpeg -hwaccel qsv -qsv_device ${QSV_DEVICE} \
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-c:v h264_qsv -i /media/AUD_MW_E.264 \
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ffmpeg \
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-hwaccel qsv \
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-qsv_device ${QSV_DEVICE} \
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-c:v h264_qsv \
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-i /media/${IN_FILE} \
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-filter_complex "split=2[s1][s2]; \
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[s1]scale_qsv=1280:720[o1]; \
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[s2]vpp_qsv=framerate=60[o2]" \
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-map [o1] -c:v h264_qsv -b:v 5M /media/5M.mp4 \
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-map [o2] -c:v h264_qsv -b:v 4M /media/4M60FPS.h264
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-map [o1] -c:v h264_qsv -b:v 5M /media/"${OUT_FILE_BASE}5M.mp4" \
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-map [o2] -c:v h264_qsv -b:v 4M /media/"${OUT_FILE_BASE}4M60FPS.h264"
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```
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## Developing
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@ -201,3 +218,29 @@ tag:
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```bash
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. MANIFEST ; git tag -f agama-${AGAMA_VERSION}
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```
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# Appendix A: Multicard
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Most of the filters and drivers for ffmpeg will default to connecting to
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/dev/dri/renderD128.
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If you have multiple cards, the card you want to connect to might be exposed
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on a different render interface.
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You can configure which interface is used by setting the QSV_DEVICE environment
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variable prior to running intel-docker (or by passing -e QSV_DEVICE to docker
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if you run it manually.)
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You can find out the correct path for your Intel Graphics card by running:
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```
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ls -l /dev/dri/by-path/pci-*$(lspci | grep Intel.*Graphics | cut -d " " -f1)*
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```
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If the interface is on /dev/dri/renderD129, set QSV_DEVICE as follows:
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```
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export QSV_DEVICE=/dev/dri/renderD129
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```
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