decoder/ffmpeg: call avcodec_parameters_to_context()

These bug reports describe problems with some FFmpeg codecs: https://bugs.musicpd.org/view.php?id=4564 https://bugs.musicpd.org/view.php?id=4568 https://bugs.musicpd.org/view.php?id=4572 According to the FFmpeg bug tracker, a call to avcodec_parameters_to_context() is required after avcodec_alloc_context3(): https://trac.ffmpeg.org/ticket/5781 This requirement was previously undocumented.

decoder/ffmpeg: call avcodec_parameters_to_context()
05de0ece · Max Kellermann · Max Kellermann · b05beb00 · 05de0ece · 05de0ece
Commit 05de0ece authored Aug 23, 2016 by Max Kellermann Committed by Max Kellermann Aug 23, 2016
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NEWS NEWS +1 -0

FfmpegDecoderPlugin.cxx src/decoder/plugins/FfmpegDecoderPlugin.cxx +2 -0

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--- a/NEWS
+++ b/NEWS
 ver 0.19.19 (not yet released)
 * decoder
+  - ffmpeg: bug fix for FFmpeg 3.1 support
  - wildmidi: support libWildMidi 0.4
 * output
  - pulse: support 32 bit, 24 bit and floating point playback

--- a/src/decoder/plugins/FfmpegDecoderPlugin.cxx
+++ b/src/decoder/plugins/FfmpegDecoderPlugin.cxx
@@ -547,6 +547,8 @@ FfmpegDecode(Decoder &decoder, InputStream &input,
 	AtScopeExit(&codec_context) {
 		avcodec_free_context(&codec_context);
 	};
+
+	avcodec_parameters_to_context(codec_context, av_stream.codecpar);
 #endif

 	const SampleFormat sample_format =