Сохранять выдачу старого GPU до первого IDR замены

tools/chatgui/src/live_video_encoder.cpp

@@ -215,6 +215,7 @@ bool LiveVideoEncoder::open(const LiveVideoConfig& config, Backend backend) {
                 if (m->forcedKeys) av_dict_set(&options, "forced_idr", "1", 0);
                 if (constrained) {
                     av_dict_set(&options, "rc", "cbr", 0);
+                    av_dict_set(&options, "skip_frame", "0", 0);
                     av_dict_set(&options, "profile", config.codec == STREAM_MEDIA_H264 ? "constrained_baseline" : "main", 0);
                     if (config.codec == STREAM_MEDIA_H265) av_dict_set(&options, "profile_tier", "main", 0);
                 }
@@ -282,6 +283,9 @@ bool LiveVideoEncoder::open(const LiveVideoConfig& config, Backend backend) {
                                 return false;
                             }
                             verified = {frame};
+                            if (constrained) DEBUG_DEBUG(DEBUG_CATEGORY_VIDEO,
+                                "call GPU probe name=%s pts=%llu pipeline_frames=%d time_base=%d/%d",
+                                name.constData(), (unsigned long long)pts, attempt, c->time_base.num, c->time_base.den);
                             return true;
                         }
                         output.clear();