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lavd/lavfi: support unknown channel layouts.
(cherry picked from commit 863fb11f63
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9422cd85a0
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31647c5a46
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@ -248,6 +248,10 @@ av_cold static int lavfi_read_header(AVFormatContext *avctx)
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ret = av_opt_set_int_list(sink, "sample_fmts", sample_fmts, AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN);
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if (ret < 0)
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goto end;
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ret = av_opt_set_int(sink, "all_channel_counts", 1,
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AV_OPT_SEARCH_CHILDREN);
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if (ret < 0)
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goto end;
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}
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lavfi->sinks[i] = sink;
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