From 92478303027358e3efdf86a8291358cfd0545f4a Mon Sep 17 00:00:00 2001
From: lhark <lhark@lharktop>
Date: Sat, 1 Oct 2022 21:57:13 +0200
Subject: [PATCH] mp3 to video

---
 how_to | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/how_to b/how_to
index bcd3bb2..9701075 100644
--- a/how_to
+++ b/how_to
@@ -450,6 +450,28 @@ Video and audio editing:
             Your text here                  # Actual text
                                             # Mandatory empty line
         ffmpeg -i in.mp4 -vf "scale=512:-2:flags=lanczos,split[x][z];[z]palettegen[y];[x][y]paletteuse,subtitles=text.srt:force_style='FontName=Oswald,Fontsize=80,FontWeight=Bold'" -r 10 out.gif
+    mp3 to video:
+        # https://shkspr.mobi/blog/2020/02/posting-audio-to-twitter/"
+        # Waveform
+        ffmpeg \
+            -i input.mp3 \
+            -filter_complex "[0:a]showwaves=s=640x480:mode=line,format=yuv420p[v]" \
+            -map "[v]" \
+            -map 0:a \
+            -c:v libx264 \
+            -c:a copy \
+            out.mkv
+        # Still image
+        ffmpeg \
+            -loop 1 \
+            -i image.jpg \
+            -i audio.mp3 \
+            -c:v libx264 \
+            -tune stillimage \
+            -c:a copy \
+            -pix_fmt yuv420p \
+            -shortest \
+            out.mp4
 
 ImageMagick:
     crop to aspect ratio