Itsy Bitsy Spider translated back into English, Daniel voice, synchronized text on screen - ffmpeg command:
I used Balabolka for TTS.
Options: Audio Files : LRC : Create LRC for audio files
Then "Save Audio File".
Then make a batch file with the following, call it speech2mpeg.bat
ffmpeg -f lavfi -i color=c=black:s=720x480 -i %1 -c:v libx264 -vf fps=12 -tune stillimage -pix_fmt yuv420p -shortest -c:a aac -b:a 128k -y %1-mp4.mp4
ffmpeg -i %1-mp4.mp4 -vf subtitles=%2:force_style='Alignment=10,FontName=Verdana,FontSize=28' -y %1-%2.mp4
del %1-mp4.mp4
Then run it with speech2mpeg yourthing.mp3 yourthing.lrc in the directory the two files were saved in.
It'll make an MP4 like you see above.