Patch via https://github.com/HandBrake/HandBrake/commit/8a0847806d558b252daceb5610d2ba61f7e9ba5a
you can test it with matrixbench trailer: bin/cin /home/admin/K38/files/home/HUAWEI/home/matrixbench_highdivx_ac3.avi and set encoder to FFMPEG webm - libopus (and video encoder of your choice). For some reason 4 ch. still does not work, but those files must be rare (made one by accident, trying to encode 2 stereo tracks avi into mp4 without any audio track disabling)
From 4e558d31dcd92a93154d286aa1d292ec960f0193 Mon Sep 17 00:00:00 2001 From: Andrew Randrianasulu <[email protected]> Date: Mon, 22 Apr 2024 11:26:21 +0300 Subject: [PATCH] Set mapping_family to 1 for 5.1 libopus --- cinelerra-5.1/cinelerra/ffmpeg.C | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/cinelerra-5.1/cinelerra/ffmpeg.C b/cinelerra-5.1/cinelerra/ffmpeg.C index 9b8832dd..1f00b883 100644 --- a/cinelerra-5.1/cinelerra/ffmpeg.C +++ b/cinelerra-5.1/cinelerra/ffmpeg.C @@ -2951,6 +2951,10 @@ int FFMPEG::open_encoder(const char *type, const char *spec) sprintf(arg, "%d", ctx->global_quality); av_dict_set(&sopts, "global_quality", arg, 0); } + if(!strcmp(codec_name, "libopus")) { + if(asset->channels > 2) + av_dict_set(&sopts, "mapping_family", "1", 0); + } int aidx = ffaudio.size(); int fidx = aidx + ffvideo.size(); FFAudioStream *aud = new FFAudioStream(this, st, aidx, fidx); -- 2.35.8
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