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Fix wav concat FFmpeg command, solve #130 #117 #90 #78 #131

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Fix wav concat FFmpeg command, solve #130 #117 #90 #78 #131

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@stockmind stockmind commented Oct 31, 2025 •
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This should solve issue with error:

Input #0, concat, from 'ebook_wav_list.txt': Duration: N/A, start: 0.000000, bitrate: 384 kb/s Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 24000 Hz, mono, s16, 384 kb/s [mp4 @ 0x5a5bc5ce3580] Could not find tag for codec pcm_s16le in stream #0, codec not currently supported in container Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument Error initializing output stream 0:0 -- Stream mapping: Stream #0:0 -> #0:0

Apparently codec pcm_s16le is not supported inside an .mp4 or .m4b container.

Same error mentioned in #130 #117 #90 #78

I'm using Google Colab and the notebook mentioned in the README https://colab.research.google.com/drive/164PQLowogprWQpRjKk33e-8IORAvqXKI?usp=sharing%5D.

How is this working for others? Different ffmpeg versions and safeguards?

I guess this broke since commit c64ff04: c64ff04#diff-fb537b920c6469e3aceef43eb79c680b752ed5ed134bf22be761b04e69a0727fR301

@stockmind stockmind mentioned this pull request Nov 1, 2025
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@stockmind stockmind changed the title Fix wav concat FFmpeg command, solve #130 #117 Fix wav concat FFmpeg command, solve #130 #117 #90 #78 Nov 1, 2025
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