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	ffmpeg-effect: handle input files without an audio track - annna - Annna the ni…
	git clone git://bitreich.org/annna/ git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws6…
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	---
	commit 3f0d1a63bf72da4943bb830d8ca7d86c6b4a8586
	parent c4bdefe72c60a62c55e32acaa0f240fe1f88633c
	Author: Anders Damsgaard <[email protected]>
	Date: Tue, 22 Jun 2021 22:08:15 +0200

	ffmpeg-effect: handle input files without an audio track

	when no audio track is present, add one from the overlay

	Signed-off-by: Annna Robert-Houdin <[email protected]>

	Diffstat:
	M ffmpeg-effect \| 45 +++++++++++++++++++++++------…

	1 file changed, 34 insertions(+), 11 deletions(-)
	---
	diff --git a/ffmpeg-effect b/ffmpeg-effect
	@@ -15,20 +15,43 @@ usage() {
	exit 1
	}

	-mix_audio() {
	- $ffmpeg_common -i "$2" -i "$1" \
	- -filter_complex "amerge=inputs=2" \
	+has_audio() {
	+ ffprobe "$1" 2>&1 \| grep -qE 'Stream .* Audio: '
	+}
	+
	+replace_audio() {
	+ $ffmpeg_common -i "$1" -i "$2" \
	+ -c:v copy -map 1:v:0 -map 0:a:0 -shortest \
	"$3" </dev/null
	}

	+mix_audio() {
	+ if has_audio "$2"; then
	+ $ffmpeg_common -i "$1" -i "$2" \
	+ -filter_complex "amerge=inputs=2" \
	+ "$3" </dev/null
	+ else
	+ replace_audio "$1" "$2" "$3"
	+ fi
	+}
	+
	mix_audio_video() {
	- $ffmpeg_common -i "$2" \
	- -i "$1" \
	- -filter_complex "
	- [0:v] scale=w=${4:-1920}:h=${5:-1080}, pad=w=${4:-1920…
	- [video0][1:v] blend=all_mode=average:shortest=1;
	- amix=inputs=2:duration=shortest:weights=3 2" \
	- "$3" </dev/null
	+ if has_audio "$2"; then
	+ $ffmpeg_common -i "$2" \
	+ -i "$1" \
	+ -filter_complex "
	+ [0:v] scale=w=${4:-1920}:h=${5:-1080}, pad=w=$…
	+ [video0][1:v] blend=all_mode=average:shortest=…
	+ amix=inputs=2:duration=shortest:weights=3 2" \
	+ "$3" </dev/null
	+ else
	+ $ffmpeg_common -i "$2" \
	+ -i "$1" \
	+ -filter_complex "
	+ [0:v] scale=w=${4:-1920}:h=${5:-1080}, pad=w=$…
	+ [video0][1:v] blend=all_mode=average:shortest=…
	+ "$3" </dev/null
	+ fi
	}

	process_filter() {
	@@ -70,7 +93,7 @@ process_filter() {
	sexify)
	mix_audio "${mediadir}/careless_whisper.mp3" "$2" "$3"…
	doomify)
	- mix_audio "$2" "${mediadir}/doom.mp3" "$3";;
	+ mix_audio "${mediadir}/doom.mp3" "$2" "$3";;
	scrollify)
	mix_audio "${mediadir}/elder_scrolls.mp3" "$2" "$3";;
	sendtohell\|amsterdamify)