Differential D3507 Diff 18141 source/tools/trailer/ffmpeg_concat.sh

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				FRAMERATE=${FRAMERATE:="60"}
				INPUT=${INPUT:="screens/videoscreen%04d.jpeg"}
				OUTPUT=${OUTPUT:="trailer_crf15.mp4"}

				# x264 constant rate factor. 0 is lossless, 23 default, 51 worst.
				CONSTANT_RATE_FACTOR=${CRF:="15"}

				# Scale to 1080p, size x (as a factor of two)
				FILTER=${FILTER:="scale=-2:1080"}

				ffmpeg \
				-start_number 0 \
				-framerate "$FRAMERATE" \
				-i "$INPUT" \
				-codec:v libx264 \
				-crf "$CONSTANT_RATE_FACTOR" \
				-filter:v "$FILTER" \
				"$OUTPUT"