Live Streaming: Real-time translated subtile with AWS

const startIndex = translationContext.lastProcessedItemIndex || 0;
const newItems = items.slice(startIndex);

translationContext.lastProcessedItemIndex = items.length;

if (newItems.length > 0) {
    const newText = reconstructTranscript(newItems);
    translationContext.untranslatedBuffer += newText;
}

const shouldTranslate = checkShouldTranslate(translationContext.untranslatedBuffer);

function checkShouldTranslate(buffer) {
  // Check for sentence-ending punctuation
  const punctuationRegex = /[.!?。！？]/;
  const commaRegex = /[,]/;
  if (punctuationRegex.test(buffer)) {
    return true;
  }
  if (buffer.length > 60 && commaRegex.test(buffer)) {
    console.log("more than 60 char & comma: ", buffer)
    return true;
  }
  // Check if word count exceeds threshold (14 words) and ends with comma
  // const words = buffer.trim().split(/\s+/);
  if (buffer.length > 76) {
    console.log("more than 76 char: ", buffer)
    return true;
  }

if (shouldTranslate || !result.IsPartial) {
    const prompt = `You receive a processed text and a reference text. 
    IMPORTANT: Fix ONLY the actual errors in the range of processed text by referring to the reference text. If the reference text is completely different, or has more content, return the processed text as is.
    Reference text: ${parsedTranscription.text}
    Return ONLY fixed text, no explanations.
    Example: 
      Processed text: "A strong refer needed today , Howard Webb , is that , England'sA strong refer needed today , Howard Webb , is that , England's represent at Euro 20 ."
      Reference text: "Not many managers can claim degree of success. A strong referee needed today, Howard Webb is that man, England's representative at Euro 2008"
      Response: "A strong referee needed today, Howard Webb is that man, England's representative at Euro 2008"
    Processed text: ${translationContext.untranslatedBuffer}`;

    const message = {
        content: [{ text: prompt }],
        role: ConversationRole.USER,
    };
    const request = {
      modelId,
      messages: [message],
      inferenceConfig: {
        maxTokens: 500, // The maximum response length
        temperature: 0.0, // Using temperature for randomness control
        top_K: 1,        // Alternative: use topP instead of temperature
      },
    };
    const response = await client.send(new ConverseCommand(request));
    const ModelHandledUntranslatedBuffer = response.output.message.content[0].text;
    translationContext.untranslatedBuffer = ModelHandledUntranslatedBuffer;
}

untranslatedBuffer:   200
partial live:  2008.
ModelHandledResult:  2008.

Phrase  IPA SoundsLike  DisplayAs
Amazon  æ m ə z ɑ n      Amazon
I.V.S.  aɪ v i ɛ s        IVS
Twitch      twitch  Twitch
Szczesny            Szczesny
Danilo          Danilo
Bonucci         Bonucci
Boucci          Bonucci
De-Ligt         De Ligt
Alex-Sandro         Alex Sandro
Alexandra           Alex Sandro
Alexandro           Alex Sandro
Chiesa          Chiesa
Chiea           Chiesa
McKennie            McKennie
Bentancur           Bentancur
Bentanco            Bentancur
Ramsey          Ramsey
Dybala          Dybala
Paulo-Dybala            Paulo-Dybala
Cristiano-Ronaldo           Cristiano-Ronaldo
Andrea-Pirlo            Andrea-Pirlo
Andrea          Andrea
Pirlo           Pirlo
Juventus            Juventus
Ju-V.           JUV
JuVe            JUV
Ju-Ve           JuV
Udinese         Udinese
Udi         Udinese
U-di            UDI
Musso           Musso
Moosa           Musso
Mooso           Musso
Mosso           Musso
Mousso          Musso
Bonifazi            Bonifazi
De-Maio         De Maio
De-Mao          De Maio
De-Ma-O         De Maio
Samir           Samir
Stryger-Larsen          Stryger-Larsen
De-Paul         De Paul
Walace          Walace
Wallace         Walace
Pereyra         Pereyra
Zeegelaar           Zeegelaar
Aal         Zeegelaar
Lasagna         Lasagna
Pussello            Pussello
Serie-A.            Serie A
amer            amer