Function generateProviderBackedTopicsFromTranscript

lib/ai-processing.ts:756–1036

(
  transcript: TranscriptSegment[],
  options: GenerateTopicsOptions,
  provider: ProviderKey
)

}

async function generateProviderBackedTopicsFromTranscript(
  transcript: TranscriptSegment[],
  options: GenerateTopicsOptions,
  provider: ProviderKey
): Promise<ProviderBackedTopicGenerationResult> {
  const {
    videoInfo,
    chunkDurationSeconds = DEFAULT_CHUNK_DURATION_SECONDS,
    chunkOverlapSeconds = DEFAULT_CHUNK_OVERLAP_SECONDS,
    maxTopics = 5,
    theme,
    excludeTopicKeys,
    mode = 'smart',
    fastModel: fastModelOverride,
    proModel: proModelOverride,
    language
  } = options;

  const providerModelDefaults = getProviderModelDefaults(provider);
  const fastModel = fastModelOverride ?? providerModelDefaults.fastModel;
  const proModel = proModelOverride ?? providerModelDefaults.proModel;
  const forceFullTranscript =
    getProviderBehavior(provider).forceFullTranscriptTopicGeneration;
  const requestedTopics = Math.max(1, Math.min(maxTopics, 5));
  const isSmartMode = mode === 'smart';
  const transcriptWithTimestamps = formatTranscriptWithTimestamps(transcript);
  const videoDurationSeconds =
    transcript.length > 0
      ? transcript[transcript.length - 1].start +
        transcript[transcript.length - 1].duration
      : 0;
  const isShortVideo = videoDurationSeconds <= 30 * 60;
  const smartModeModel = getProviderBackedTopicModel({
    provider,
    mode,
    transcript,
    fastModel,
    proModel
  });

  let topicsArray: ParsedTopic[] = [];
  let candidateTopics: CandidateTopic[] = [];
  const excludedKeys = excludeTopicKeys ?? new Set<string>();
  let resolvedModel = isSmartMode ? smartModeModel : fastModel;

  if (isSmartMode || forceFullTranscript) {
    const singlePassModel = isSmartMode ? smartModeModel : fastModel;
    resolvedModel = singlePassModel;

    const smartTopics = await runSinglePassTopicGeneration(
      transcript,
      transcriptWithTimestamps,
      singlePassModel,
      provider,
      theme,
      language
    );