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Trace HEVC key frame quantization and reduce AMF log noise

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evgeny committed 2026-10-18 19:44:38 +02:00
1 parent 78b147f806
commit f7853f145c
2 files changed
+61 -10
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tools/chatgui/src/live_video_encoder.cpp
+32 -1
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@@ -32,11 +32,13 @@ struct LiveVideoEncoder::Impl {
#ifdef HAVE_FFMPEG
AVCodecContext* codec = nullptr;
AVBSFContext* filter = nullptr;
AVBSFContext* headers = nullptr; // Только чтение заголовков KEY при debug=trace, исходный пакет не меняется.
bool headersAttempted = false;
AVFrame* frame = nullptr;
AVBufferRef* device = nullptr;
SwsContext* scale = nullptr;
~Impl() {
av_bsf_free(&filter); avcodec_free_context(&codec); av_frame_free(&frame);
av_bsf_free(&headers); av_bsf_free(&filter); avcodec_free_context(&codec); av_frame_free(&frame);
av_buffer_unref(&device); sws_freeContext(scale);
}
#endif
@@ -423,6 +425,35 @@ bool LiveVideoEncoder::encode(const QImage& image, uint64_t pts, bool key, QList
if (result >= 0) result = av_bsf_receive_packet(m->filter, packet);
if (result < 0) break;
}
if (m->config.codec == STREAM_MEDIA_H265 && (packet->flags & AV_PKT_FLAG_KEY)
&& debug_should_output(DEBUG_LEVEL_TRACE, DEBUG_CATEGORY_DEBUG)) {
int diagnostic = 0;
if (!m->headersAttempted) {
m->headersAttempted = true;
const auto* trace = av_bsf_get_by_name("trace_headers");
diagnostic = trace ? av_bsf_alloc(trace, &m->headers) : AVERROR(ENOSYS);
if (diagnostic >= 0) diagnostic = m->filter ? avcodec_parameters_copy(m->headers->par_in, m->filter->par_out)
: avcodec_parameters_from_context(m->headers->par_in, m->codec);
if (diagnostic >= 0) {
m->headers->time_base_in = m->codec->time_base;
diagnostic = av_bsf_init(m->headers);
}
if (diagnostic >= 0) DEBUG_INFO(DEBUG_CATEGORY_DEBUG,
"HEVC KEY header diagnostics enabled name=%s; slice_QP=26+init_qp_minus26+slice_qp_delta",
qPrintable(m->name));
}
if (m->headers && diagnostic >= 0) {
AVPacket* copy = av_packet_clone(packet);
diagnostic = copy ? av_bsf_send_packet(m->headers, copy) : AVERROR(ENOMEM);
if (diagnostic >= 0) diagnostic = av_bsf_receive_packet(m->headers, copy);
av_packet_free(&copy);
}
if (diagnostic < 0) {
DEBUG_WARN(DEBUG_CATEGORY_VIDEO, "HEVC header diagnostics disabled name=%s pts=%lld error=%s",
qPrintable(m->name), (long long)packet->pts, qPrintable(ffError(diagnostic)));
av_bsf_free(&m->headers);
}
}
LiveEncodedFrame encoded; encoded.key = (packet->flags & AV_PKT_FLAG_KEY) != 0;
encoded.pts = packet->pts >= 0 ? static_cast<uint64_t>(packet->pts) : pts;
if (constrained) {