Output file contains two audio streams #10
Description
The output m4b file seems to contain two aac audio streams but should of course only contain one. This also causes the doubling of the filesize.
Here is a the ffprobe output of one of the audio files I created with autiobooks:
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x6062adfe0440] stream 0, timescale not set
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Reentry - Eric Berger.m4b':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2mp41
title : Reentry
artist : Eric Berger
encoder : Lavf61.7.100
Duration: 01:27:57.13, start: 0.000000, bitrate: 146 kb/s
Chapters:
Chapter #0:0: start 0.000000, end 5277.125000
Metadata:
title : Chapter {i}
Stream #0:0[0x1](und): Audio: aac (LC) (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 71 kb/s (default)
Metadata:
handler_name : SoundHandler
vendor_id : [0][0][0][0]
Stream #0:1[0x3](und): Audio: aac (LC) (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 71 kb/s (default)
Metadata:
handler_name : SoundHandler
vendor_id : [0][0][0][0]
Stream #0:2[0x4](eng): Data: bin_data (text / 0x74786574)
Metadata:
handler_name : SubtitleHandler
Stream #0:3[0x0]: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 1200x1800, 90k tbr, 90k tbn (attached pic)
Unsupported codec with id 98314 for input stream 2
I glanced over the code but I couldn't find the bug that causes this.