![]() ![]() ![]() Next tried to use -silence-detection with m4b-tool split and had memory errors and even tried upping memory limit in or whatever but no luck. Wanted to get chapters for some a pre-existing m4b audiobook that had no chapters and do it automatically. So that worked great and works on IINA and BookPlayer (iOS) and shows chapters in the resulting m4b. use-filenames-as-chapters (put the mp3s and appropriately name with the chapters. This speeds it up so much faster (4x faster) than $5 AudioBook Builder on Mac) jobs 4 (I have a quad core CPU so it uses all cores to process. audio-bitrate (done tons of testing and 32kbps with 22050 Hz and AAC using aac_he_v2 (AAC High Efficiency version 2) seems to save about 7MB for a typically audiobook) audio-codec (AAC I think this one is default so might not have to specify this.can't remember) Of course if plays to both left and right but for audio books no need for stereo) skip-cover (I hardly ever use covers otherwise put cover.jpg in same directory as all the mp3 files and don't specify this option) M4b-tool merge -v -skip-cover -audio-channels 1 -audio-bitrate 32k -audio-samplerate 22050 -audio-codec aac -audio-profile aac_he_v2 -jobs 4 -use-filenames-as-chapters "data/my-audio-book/" -o "data/my-audio-book.m4b" Then I wish I read the instructions better but after that's finished upgrade to the latest pre-release (Feb 9, 2021) or if a newer one comes out. I spent many hours yesterday screwing around with m4b-tool (command line (win, linux, Mac - free wrapper for ffmpeg to create m4b audiobooks).įollowed the instructions to install on macOS Catalina with brew m4b-tool version 0.4.2 (from August 11, 2019) ![]()
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