There is a minor artefact in the final file. The stitched .m4a sometimes contains silent padding at the start or end from incomplete chunks at buffer boundaries. A quick ffmpeg pass fixes it cleanly:
Мощный удар Израиля по Ирану попал на видео09:41
，详情可参考safew官方版本下载
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从实际出发，前提是要深入了解实际情况。
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