From e6b0d05fe68ca39344e793fdb1fa21ac10ffeffd Mon Sep 17 00:00:00 2001 From: Valentin NOEL Date: Tue, 14 Jun 2022 15:17:37 +0200 Subject: [PATCH] VideoProperties: extract min and max bitrate from CPB side data if necessary --- src/AvTranscoder/properties/StreamProperties.cpp | 7 +++++-- src/AvTranscoder/properties/VideoProperties.cpp | 16 ++++++++++++++++ 2 files changed, 21 insertions(+), 2 deletions(-) diff --git a/src/AvTranscoder/properties/StreamProperties.cpp b/src/AvTranscoder/properties/StreamProperties.cpp index ced1b01a..a0e6cac1 100644 --- a/src/AvTranscoder/properties/StreamProperties.cpp +++ b/src/AvTranscoder/properties/StreamProperties.cpp @@ -28,10 +28,13 @@ StreamProperties::StreamProperties(const FileProperties& fileProperties, const s throw std::runtime_error(ss.str()); } - _codec = avcodec_find_decoder(_formatContext->streams[_streamIndex]->codecpar->codec_id); + AVStream* stream = _formatContext->streams[_streamIndex]; + _codec = avcodec_find_decoder(stream->codecpar->codec_id); _codecContext = avcodec_alloc_context3(_codec); - avcodec_parameters_to_context(_codecContext, _formatContext->streams[_streamIndex]->codecpar); + avcodec_parameters_to_context(_codecContext, stream->codecpar); + _codecContext->time_base = stream->time_base; + _codecContext->coded_side_data = stream->side_data; } // find the decoder diff --git a/src/AvTranscoder/properties/VideoProperties.cpp b/src/AvTranscoder/properties/VideoProperties.cpp index e2ab5bbd..d61dcede 100644 --- a/src/AvTranscoder/properties/VideoProperties.cpp +++ b/src/AvTranscoder/properties/VideoProperties.cpp @@ -371,6 +371,14 @@ size_t VideoProperties::getMaxBitRate() const { if(!_codecContext) throw std::runtime_error("unknown codec context"); + + if (_codecContext->rc_max_rate == 0 + && _codecContext->coded_side_data + && _codecContext->coded_side_data->type == AV_PKT_DATA_CPB_PROPERTIES) { + const AVCPBProperties* prop = (AVCPBProperties*) _codecContext->coded_side_data->data; + return prop->max_bitrate; + } + return _codecContext->rc_max_rate; } @@ -378,6 +386,14 @@ size_t VideoProperties::getMinBitRate() const { if(!_codecContext) throw std::runtime_error("unknown codec context"); + + if (_codecContext->rc_max_rate == 0 + && _codecContext->coded_side_data + && _codecContext->coded_side_data->type == AV_PKT_DATA_CPB_PROPERTIES) { + const AVCPBProperties* prop = (AVCPBProperties*) _codecContext->coded_side_data->data; + return prop->min_bitrate; + } + return _codecContext->rc_min_rate; } pFad - Phonifier reborn

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