ffmpeg/wip

sh/ffmpeg.sh

@@ -26,6 +26,18 @@ rwx_ffmpeg_device_formats() {
 # │ ffmpeg │ input │
 # ╰────────┴───────╯
 
+rwx_ffmpeg_input_blue_yeti() {
+	local device="alsa_input.\
+usb-Generic_Blue_Microphones_2051BAB04XY8-00.analog-stereo"
+	set -- \
+		-f "pulse" \
+		-i "${device}" \
+		-ac "2" \
+		-ar "48000"
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
 rwx_ffmpeg_input_file() {
 	local file="${1}"
 	local from="${2}"
@@ -59,23 +71,43 @@ rwx_ffmpeg_input_nearstream_ccd10() {
 # │ ffmpeg │ output │
 # ╰────────┴────────╯
 
-rwx_ffmpeg_output_fast() {
+rwx_ffmpeg_output_audio_fast() {
+	set -- \
+		-codec:a "flac" \
+		-compression_level "0"
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+rwx_ffmpeg_output_audio_slow() {
+	set -- \
+		-codec:a "libopus" \
+		-b:a "128k"
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+rwx_ffmpeg_output_file() {
 	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
+rwx_ffmpeg_output_video_fast() {
+	set -- \
+		-codec:v "libx264" \
+		-preset "ultrafast" \
+		-crf "0"
+	local argument
+	for argument in "${@}"; do echo "${argument}"; done
+}
+
+rwx_ffmpeg_output_video_slow() {
+	local crf="${1}"
+	local codec="${2}"
 	[ -n "${codec}" ] || codec="libx264"
 	if [ -z "${crm}" ]; then
 		case "${codec}" in
@@ -89,8 +121,7 @@ rwx_ffmpeg_output_slow() {
 		-preset "veryslow" \
 		-crf "${crf}" \
 		-movflags "+faststart" \
-		-pix_fmt "yuv420p" \
-		-y "${file}"
+		-pix_fmt "yuv420p"
 	local argument
 	for argument in "${@}"; do echo "${argument}"; done
 }
@@ -99,13 +130,34 @@ rwx_ffmpeg_output_slow() {
 # │ ffmpeg │ record │
 # ╰────────┴────────╯
 
-rwx_ffmpeg_record_ccd10() {
+rwx_ffmpeg_record_ccd10_yeti() {
 	local file="${1}"
 	[ -n "${file}" ] || return
 	set -- \
 		$(rwx_ffmpeg_input_nearstream_ccd10) \
-		$(rwx_ffmpeg_output_fast "${file}")
-	local argument
+		$(rwx_ffmpeg_input_blue_yeti) \
+		$(rwx_ffmpeg_output_video_fast) \
+		$(rwx_ffmpeg_output_audio_fast) \
+		$(rwx_ffmpeg_output_file "${file}")
+	echo "${@}"
+	ffmpeg "${@}"
+}
+
+# ╭────────┬────────╮
+# │ ffmpeg │ reduce │
+# ╰────────┴────────╯
+
+rwx_ffmpeg_reduce() {
+	local input="${1}"
+	local output="${2}"
+	local from="${3}"
+	local to="${4}"
+	[ -n "${output}" ] || return
+	set -- \
+		$(rwx_ffmpeg_input_file "${input}" "${from}" "${to}") \
+		$(rwx_ffmpeg_output_video_slow) \
+		$(rwx_ffmpeg_output_audio_slow) \
+		$(rwx_ffmpeg_output_file "${output}")
 	echo "${@}"
 	ffmpeg "${@}"
 }