ffmpeg: added version that takes binaries from host

Signed-off-by: Waldemar Kozaczuk <[email protected]>

ffmpeg-from-host/Makefile

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+.PHONY: module clean
+
+SRC = $(shell readlink -f ../..)
+
+ffmpeg_path = $(shell realpath $$(which ffmpeg)) 
+
+module:
+	$(SRC)/scripts/manifest_from_host.sh $(ffmpeg_path) > usr.manifest
+
+clean:
+	rm -rf usr.manifest

ffmpeg-from-host/README.md

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+Open source audio & video processing framework - https://www.ffmpeg.org/
+
+The default command prints list of supported formats.
+
+Examples:
+- get details of video - ./scripts/run.py -e '/ffmpeg -i http://clips.vorwaerts-gmbh.de/VfE_html5.mp4'
+- extract 10 seconds of video starting at 10 seconds offset - ./scripts/run.py -e '/ffmpeg -i http://clips.vorwaerts-gmbh.de/VfE_html5.mp4 -ss 00:00:10 -codec copy -t 10 output.mp4'
+- extract png image for each second of video - ./scripts/run.py -e '/ffmpeg -i http://clips.vorwaerts-gmbh.de/VfE_html5.mp4 -r 1 -f image2 image-%2d.png
+
+For more examples read https://www.ostechnix.com/20-ffmpeg-commands-beginners/
+
+There are number of test videos of different formats you can use from here - https://standaloneinstaller.com/blog/big-list-of-sample-videos-for-testers-124.html

ffmpeg-from-host/module.py

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+from osv.modules import api
+
+api.require("libz")
+default = api.run("/ffmpeg -formats")