Here's my latest script. It makes aac-in-m4a
ffmpeg^
-i "c:\chapters.txt"^
-i c:\01.WAV^
-i c:\02.WAV^
-i c:\03.WAV^
-i c:\04.WAV^
-i c:\05.WAV^
-i c:\06.WAV^
-i c:\07.WAV^
-i c:\08.WAV^
-filter_complex
"[1:0][2:0][3:0][4:0][5:0][6:0][7:0][8:0]concat=n=8:v=0:a=1[out]"^
-map_metadata 0 -map "[out]"^
-c aac -b:a 657.6k^
"c:\Ashra, Belle Alliance [1980].m4a"
The aac-in-m4a is 125,341,168 bytes. It sounds much smoother than mp3-in-mp4.
The mp3-in-mp4 using lame was 42,705,917 bytes.
8 wav files total 466,343,152 bytes.
The script above provoked this: "Too many bits 15269.442177 > 12288 per frame requested, clamping to
max". Of course, I have no idea what that's about. Do you? "Too many bits"?
I just downloaded this:
https://www.videohelp.com/software/MP4Box
I've read that mp4box will package pcm-in-mp4. I don't know anything else about it yet. It's not a
big deal since aac-in-m4a (above) is so good.
--Mark.
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