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Fix OPUS transcoding quality

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Alexey Khit
2023-07-04 10:37:40 +03:00
parent c34f9ae2b7
commit 6c2f883f9e
1 changed files with 3 additions and 1 deletions
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4
internal/ffmpeg/ffmpeg.go
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@@ -62,7 +62,9 @@ var defaults = map[string]string{
//"mjpeg": "-c:v mjpeg -force_duplicated_matrix:v 1 -huffman:v 0 -pix_fmt:v yuvj420p", //"mjpeg": "-c:v mjpeg -force_duplicated_matrix:v 1 -huffman:v 0 -pix_fmt:v yuvj420p",
// https://ffmpeg.org/ffmpeg-codecs.html#libopus-1 // https://ffmpeg.org/ffmpeg-codecs.html#libopus-1
"opus": "-c:a libopus -ar:a 48000 -ac:a 2 -application:a voip -compression_level:a 0", // https://github.com/pion/webrtc/issues/1514
// `-af adelay=0|0` - force frame_size=960, important for WebRTC audio quality
"opus": "-c:a libopus -ar:a 48000 -ac:a 2 -application:a voip -af adelay=0|0",
"pcmu": "-c:a pcm_mulaw -ar:a 8000 -ac:a 1", "pcmu": "-c:a pcm_mulaw -ar:a 8000 -ac:a 1",
"pcmu/16000": "-c:a pcm_mulaw -ar:a 16000 -ac:a 1", "pcmu/16000": "-c:a pcm_mulaw -ar:a 16000 -ac:a 1",
"pcmu/48000": "-c:a pcm_mulaw -ar:a 48000 -ac:a 1", "pcmu/48000": "-c:a pcm_mulaw -ar:a 48000 -ac:a 1",