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INPUT_VIDEO = <please select a video file as INPUT_VIDEO>
TEMPFILE = tmp.uivf
DRAFT = -d
# Useful for better performance when not working
# with colours or not caring about colours.
FFMPEG_ARGS = -c:v libx264 -preset veryslow -crf 0 -pix_fmt yuv444p
# ↑~~~~~~~~~~~ ↑~~~~~~~~~~~~~~~ ↑~~~~~~~~~~~~~~~~~~~~~~
# │ │ │
# │ │ └──── Lossless
# │ │
# │ └──── High compression
# │
# └──── H.264, a lossless-capable codec
START = 20
END = 40
reversed.mkv: $(TEMPFILE)
framerate=$$(ffprobe -v quiet -show_streams -select_streams v - < "$(INPUT_VIDEO)" | \
grep '^r_frame_rate=' | cut -d = -f 2) && \
../../blind-reverse $(TEMPFILE) | ../../blind-to-video $(DRAFT) $${framerate} $(FFMPEG_ARGS) reversed.mkv
$(TEMPFILE): $(INPUT_VIDEO)
../../blind-from-video -L $(DRAFT) "$(INPUT_VIDEO)" - | \
../../blind-split -L /dev/null $(START) $(TEMPFILE) $(END)
clean:
-rm reversed.mkv $(TEMPFILE)
.PHONY: clean
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