From 006abeb31ccd569df19654610b1b6601ea48e891 Mon Sep 17 00:00:00 2001
From: Marc Beninca <git@marc.beninca.link>
Date: Mon, 13 Jan 2025 00:14:47 +0100
Subject: [PATCH] ffmpeg/draft

---
 sh/ffmpeg.sh | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)

diff --git a/sh/ffmpeg.sh b/sh/ffmpeg.sh
index 0fb29e1..da6b5ee 100644
--- a/sh/ffmpeg.sh
+++ b/sh/ffmpeg.sh
@@ -21,3 +21,91 @@ rwx_ffmpeg_device_formats() {
 		-list_formats "all" \
 		-i "${device}"
 }
+
+# ╭────────┬───────╮
+# │ ffmpeg │ input │
+# ╰────────┴───────╯
+
+rwx_ffmpeg_input_file() {
+	local file="${1}"
+	local from="${2}"
+	local to="${3}"
+	[ -n "${file}" ] || return
+	set -- \
+		-i "${file}"
+	if [ -n "${to}" ]; then
+		set -- "${@}" \
+			-ss "${from}" \
+			-to "${to}"
+	fi
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+rwx_ffmpeg_input_nearstream_ccd10() {
+	local device="${1}"
+	[ -n "${device}" ] || device="/dev/video0"
+	set -- \
+		-f "v4l2" \
+		-video_size "1920x1080" \
+		-framerate "60" \
+		-input_format "yuyv422" \
+		-i "${device}"
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+# ╭────────┬────────╮
+# │ ffmpeg │ output │
+# ╰────────┴────────╯
+
+rwx_ffmpeg_output_fast() {
+	local file="${1}"
+	[ -n "${file}" ] || return
+	set -- \
+		-codec:v "libx264" \
+		-preset "ultrafast" \
+		-crf "0" \
+		-y "${file}"
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+rwx_ffmpeg_output_slow() {
+	local file="${1}"
+	local crf="${2}"
+	local codec="${3}"
+	[ -n "${file}" ] || return
+	[ -n "${codec}" ] || codec="libx264"
+	if [ -z "${crm}" ]; then
+		case "${codec}" in
+			"libx264") crf="23" ;;
+			"libx265") crf="28" ;;
+			*) ;;
+		esac
+	fi
+	set -- \
+		-codec:v "${codec}" \
+		-preset "veryslow" \
+		-crf "${crf}" \
+		-movflags "+faststart" \
+		-pix_fmt "yuv420p" \
+		-y "${file}"
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+# ╭────────┬────────╮
+# │ ffmpeg │ record │
+# ╰────────┴────────╯
+
+rwx_ffmpeg_record_ccd10() {
+	local file="${1}"
+	[ -n "${file}" ] || return
+	set -- \
+		$(rwx_ffmpeg_input_nearstream_ccd10) \
+		$(rwx_ffmpeg_output_fast "${file}")
+	local argument
+	echo "${@}"
+	ffmpeg "${@}"
+}