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07d504e5c7
Introduce support for delivering BPM (Broadcast Performance Metrics) over SEI (for AVC/H.264 and HEVC/H.265) and OBU (for AV1) unregistered messages. Metrics being sent are the session frame counters, per-rendition frame counters, and RFC3339-based timestamping information to support end-to-end latency measurement. SEI/OBU messages are generated and sent with each IDR frame, and the frame counters are diff-based, meaning the counts reflect the diff between IDRs, not the running totals. BPM documentation is available at [1]. BPM relies on the recently introduced encoder packet timing support and the packet callback mechanism. BPM injection is enabled for an output by registering the `bpm_inject()` callback via `obs_output_add_packet_callback()` function. The callback must be unregistered using `obs_output_remove_packet_callback()` and `bpm_destroy()` must be used by the caller to release the BPM structures. It is important to measure the number of frames successfully encoded by the obs_encoder_t instances, particularly for renditions where the encoded frame rate differs from the canvas frame rate. The encoded_frames counter and `obs_encoder_get_encoded_frames()` API is introduced to measure and report this in the encoded rendition metrics message. [1] https://d50yg09cghihd.cloudfront.net/other/20240718-MultitrackVideoIntegrationGuide.pdf |
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| .. | ||
| bpm | ||
| file-updater | ||
| happy-eyeballs | ||
| ipc-util | ||
| media-playback | ||
| obs-d3d8-api | ||
| obs-hook-config | ||
| obs-inject-library | ||
| obs-scripting | ||
| obs-shared-memory-queue | ||
| obs-tiny-nv12-scale | ||
| opts-parser | ||
| properties-view | ||
| qt | ||