使用 MediaConvert for C++ 的 SDK 範例 - AWS SDK 程式碼範例
動作

文件 AWS SDK AWS 範例 SDK 儲存庫中有更多可用的 GitHub 範例。

本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

使用 MediaConvert for C++ 的 SDK 範例

下列程式碼範例示範如何使用 AWS SDK for C++ with MediaConvert 來執行動作和實作常見案例。

Actions 是大型程式的程式碼摘錄，必須在內容中執行。雖然 動作會示範如何呼叫個別服務函數，但您可以在其相關案例中查看內容中的動作。

每個範例都包含完整原始程式碼的連結，您可以在其中找到如何在內容中設定和執行程式碼的指示。

主題

動作

下列程式碼範例示範如何使用 CreateJob。

C++ 的 SDK
注意

還有更多 on GitHub。尋找完整範例，並了解如何在 AWS 程式碼範例儲存庫中設定和執行。

//! Create an AWS Elemental MediaConvert job.
/*!
  \param mediaConvertRole: An Amazon Resource Name (ARN) for the AWS Identity and
                           Access Management (IAM) role for the job.
  \param fileInput: A URI to an input file that is stored in Amazon Simple Storage Service
                    (Amazon S3) or on an HTTP(S) server.
  \param fileOutput: A URI for an Amazon S3 output location and the output file name base.
  \param jobSettingsFile: An optional JSON settings file.
  \param clientConfiguration: AWS client configuration.
  \return bool: Function succeeded.
 */

bool AwsDoc::MediaConvert::createJob(const Aws::String &mediaConvertRole,
                                     const Aws::String &fileInput,
                                     const Aws::String &fileOutput,
                                     const Aws::String &jobSettingsFile,
                                     const Aws::Client::ClientConfiguration &clientConfiguration) {
    Aws::MediaConvert::Model::CreateJobRequest createJobRequest;

    createJobRequest.SetRole(mediaConvertRole);
    Aws::Http::HeaderValueCollection hvc;
    hvc.emplace("Customer", "Amazon");
    createJobRequest.SetUserMetadata(hvc);

    if (!jobSettingsFile.empty()) // Use a JSON file for the job settings.
    {
        std::ifstream jobSettingsStream(jobSettingsFile, std::ios::ate);
        if (!jobSettingsStream) {
            std::cerr << "Unable to open the job template file." << std::endl;
            return false;
        }
        std::vector<char> buffer(jobSettingsStream.tellg());
        jobSettingsStream.seekg(0);
        jobSettingsStream.read(buffer.data(), buffer.size());
        std::string jobSettingsJSON(buffer.data(), buffer.size());
        size_t pos = jobSettingsJSON.find(INPUT_FILE_PLACEHOLDER);
        if (pos != std::string::npos) {
            jobSettingsJSON.replace(pos, strlen(INPUT_FILE_PLACEHOLDER), fileInput);
        }

        pos = jobSettingsJSON.find(OUTPUT_FILE_PLACEHOLDER);
        if (pos != std::string::npos) {
            jobSettingsJSON.replace(pos, strlen(OUTPUT_FILE_PLACEHOLDER), fileOutput);
        }
        Aws::Utils::Json::JsonValue jsonValue(jobSettingsJSON);
        Aws::MediaConvert::Model::JobSettings jobSettings(jsonValue);

        createJobRequest.SetSettings(jobSettings);
    }
    else { // Configure the job settings programmatically.
        Aws::MediaConvert::Model::JobSettings jobSettings;
        jobSettings.SetAdAvailOffset(0);
        Aws::MediaConvert::Model::TimecodeConfig timecodeConfig;
        timecodeConfig.SetSource(Aws::MediaConvert::Model::TimecodeSource::EMBEDDED);
        jobSettings.SetTimecodeConfig(timecodeConfig);

        // Configure the output group.
        Aws::MediaConvert::Model::OutputGroup outputGroup;
        outputGroup.SetName("File Group");
        Aws::MediaConvert::Model::OutputGroupSettings outputGroupSettings;
        outputGroupSettings.SetType(
                Aws::MediaConvert::Model::OutputGroupType::FILE_GROUP_SETTINGS);
        Aws::MediaConvert::Model::FileGroupSettings fileGroupSettings;
        fileGroupSettings.SetDestination(fileOutput);
        outputGroupSettings.SetFileGroupSettings(fileGroupSettings);
        outputGroup.SetOutputGroupSettings(outputGroupSettings);

        Aws::MediaConvert::Model::Output output;
        output.SetNameModifier("_1");

        Aws::MediaConvert::Model::VideoDescription videoDescription;
        videoDescription.SetScalingBehavior(
                Aws::MediaConvert::Model::ScalingBehavior::DEFAULT);
        videoDescription.SetTimecodeInsertion(
                Aws::MediaConvert::Model::VideoTimecodeInsertion::DISABLED);
        videoDescription.SetAntiAlias(Aws::MediaConvert::Model::AntiAlias::ENABLED);
        videoDescription.SetSharpness(50);
        videoDescription.SetAfdSignaling(Aws::MediaConvert::Model::AfdSignaling::NONE);
        videoDescription.SetDropFrameTimecode(
                Aws::MediaConvert::Model::DropFrameTimecode::ENABLED);
        videoDescription.SetRespondToAfd(Aws::MediaConvert::Model::RespondToAfd::NONE);
        videoDescription.SetColorMetadata(
                Aws::MediaConvert::Model::ColorMetadata::INSERT);

        Aws::MediaConvert::Model::VideoCodecSettings videoCodecSettings;
        videoCodecSettings.SetCodec(Aws::MediaConvert::Model::VideoCodec::H_264);
        Aws::MediaConvert::Model::H264Settings h264Settings;
        h264Settings.SetNumberReferenceFrames(3);
        h264Settings.SetSyntax(Aws::MediaConvert::Model::H264Syntax::DEFAULT);
        h264Settings.SetSoftness(0);
        h264Settings.SetGopClosedCadence(1);
        h264Settings.SetGopSize(90);
        h264Settings.SetSlices(1);
        h264Settings.SetGopBReference(
                Aws::MediaConvert::Model::H264GopBReference::DISABLED);
        h264Settings.SetSlowPal(Aws::MediaConvert::Model::H264SlowPal::DISABLED);
        h264Settings.SetSpatialAdaptiveQuantization(
                Aws::MediaConvert::Model::H264SpatialAdaptiveQuantization::ENABLED);
        h264Settings.SetTemporalAdaptiveQuantization(
                Aws::MediaConvert::Model::H264TemporalAdaptiveQuantization::ENABLED);
        h264Settings.SetFlickerAdaptiveQuantization(
                Aws::MediaConvert::Model::H264FlickerAdaptiveQuantization::DISABLED);
        h264Settings.SetEntropyEncoding(
                Aws::MediaConvert::Model::H264EntropyEncoding::CABAC);
        h264Settings.SetBitrate(5000000);
        h264Settings.SetFramerateControl(
                Aws::MediaConvert::Model::H264FramerateControl::SPECIFIED);
        h264Settings.SetRateControlMode(
                Aws::MediaConvert::Model::H264RateControlMode::CBR);
        h264Settings.SetCodecProfile(Aws::MediaConvert::Model::H264CodecProfile::MAIN);
        h264Settings.SetTelecine(Aws::MediaConvert::Model::H264Telecine::NONE);
        h264Settings.SetMinIInterval(0);
        h264Settings.SetAdaptiveQuantization(
                Aws::MediaConvert::Model::H264AdaptiveQuantization::HIGH);
        h264Settings.SetCodecLevel(Aws::MediaConvert::Model::H264CodecLevel::AUTO);
        h264Settings.SetFieldEncoding(
                Aws::MediaConvert::Model::H264FieldEncoding::PAFF);
        h264Settings.SetSceneChangeDetect(
                Aws::MediaConvert::Model::H264SceneChangeDetect::ENABLED);
        h264Settings.SetQualityTuningLevel(
                Aws::MediaConvert::Model::H264QualityTuningLevel::SINGLE_PASS);
        h264Settings.SetFramerateConversionAlgorithm(
                Aws::MediaConvert::Model::H264FramerateConversionAlgorithm::DUPLICATE_DROP);
        h264Settings.SetUnregisteredSeiTimecode(
                Aws::MediaConvert::Model::H264UnregisteredSeiTimecode::DISABLED);
        h264Settings.SetGopSizeUnits(
                Aws::MediaConvert::Model::H264GopSizeUnits::FRAMES);
        h264Settings.SetParControl(Aws::MediaConvert::Model::H264ParControl::SPECIFIED);
        h264Settings.SetNumberBFramesBetweenReferenceFrames(2);
        h264Settings.SetRepeatPps(Aws::MediaConvert::Model::H264RepeatPps::DISABLED);
        h264Settings.SetFramerateNumerator(30);
        h264Settings.SetFramerateDenominator(1);
        h264Settings.SetParNumerator(1);
        h264Settings.SetParDenominator(1);
        videoCodecSettings.SetH264Settings(h264Settings);
        videoDescription.SetCodecSettings(videoCodecSettings);
        output.SetVideoDescription(videoDescription);

        Aws::MediaConvert::Model::AudioDescription audioDescription;
        audioDescription.SetLanguageCodeControl(
                Aws::MediaConvert::Model::AudioLanguageCodeControl::FOLLOW_INPUT);
        audioDescription.SetAudioSourceName(AUDIO_SOURCE_NAME);
        Aws::MediaConvert::Model::AudioCodecSettings audioCodecSettings;
        audioCodecSettings.SetCodec(Aws::MediaConvert::Model::AudioCodec::AAC);
        Aws::MediaConvert::Model::AacSettings aacSettings;
        aacSettings.SetAudioDescriptionBroadcasterMix(
                Aws::MediaConvert::Model::AacAudioDescriptionBroadcasterMix::NORMAL);
        aacSettings.SetRateControlMode(
                Aws::MediaConvert::Model::AacRateControlMode::CBR);
        aacSettings.SetCodecProfile(Aws::MediaConvert::Model::AacCodecProfile::LC);
        aacSettings.SetCodingMode(
                Aws::MediaConvert::Model::AacCodingMode::CODING_MODE_2_0);
        aacSettings.SetRawFormat(Aws::MediaConvert::Model::AacRawFormat::NONE);
        aacSettings.SetSampleRate(48000);
        aacSettings.SetSpecification(Aws::MediaConvert::Model::AacSpecification::MPEG4);
        aacSettings.SetBitrate(64000);
        audioCodecSettings.SetAacSettings(aacSettings);
        audioDescription.SetCodecSettings(audioCodecSettings);
        Aws::Vector<Aws::MediaConvert::Model::AudioDescription> audioDescriptions;
        audioDescriptions.emplace_back(audioDescription);
        output.SetAudioDescriptions(audioDescriptions);

        Aws::MediaConvert::Model::ContainerSettings mp4container;
        mp4container.SetContainer(Aws::MediaConvert::Model::ContainerType::MP4);
        Aws::MediaConvert::Model::Mp4Settings mp4Settings;
        mp4Settings.SetCslgAtom(Aws::MediaConvert::Model::Mp4CslgAtom::INCLUDE);
        mp4Settings.SetFreeSpaceBox(Aws::MediaConvert::Model::Mp4FreeSpaceBox::EXCLUDE);
        mp4Settings.SetMoovPlacement(
                Aws::MediaConvert::Model::Mp4MoovPlacement::PROGRESSIVE_DOWNLOAD);
        mp4container.SetMp4Settings(mp4Settings);
        output.SetContainerSettings(mp4container);

        outputGroup.AddOutputs(output);
        jobSettings.AddOutputGroups(outputGroup);

        // Configure inputs.
        Aws::MediaConvert::Model::Input input;
        input.SetFilterEnable(Aws::MediaConvert::Model::InputFilterEnable::AUTO);
        input.SetPsiControl(Aws::MediaConvert::Model::InputPsiControl::USE_PSI);
        input.SetFilterStrength(0);
        input.SetDeblockFilter(Aws::MediaConvert::Model::InputDeblockFilter::DISABLED);
        input.SetDenoiseFilter(Aws::MediaConvert::Model::InputDenoiseFilter::DISABLED);
        input.SetTimecodeSource(
                Aws::MediaConvert::Model::InputTimecodeSource::EMBEDDED);
        input.SetFileInput(fileInput);

        Aws::MediaConvert::Model::AudioSelector audioSelector;
        audioSelector.SetOffset(0);
        audioSelector.SetDefaultSelection(
                Aws::MediaConvert::Model::AudioDefaultSelection::NOT_DEFAULT);
        audioSelector.SetProgramSelection(1);
        audioSelector.SetSelectorType(
                Aws::MediaConvert::Model::AudioSelectorType::TRACK);
        audioSelector.AddTracks(1);
        input.AddAudioSelectors(AUDIO_SOURCE_NAME, audioSelector);

        Aws::MediaConvert::Model::VideoSelector videoSelector;
        videoSelector.SetColorSpace(Aws::MediaConvert::Model::ColorSpace::FOLLOW);
        input.SetVideoSelector(videoSelector);

        jobSettings.AddInputs(input);

        createJobRequest.SetSettings(jobSettings);
    }

    Aws::MediaConvert::MediaConvertClient client(clientConfiguration);
    Aws::MediaConvert::Model::CreateJobOutcome outcome = client.CreateJob(
            createJobRequest);
    if (outcome.IsSuccess()) {
        std::cout << "Job successfully created with ID - "
                  << outcome.GetResult().GetJob().GetId() << std::endl;
    }
    else {
        std::cerr << "Error CreateJob - " << outcome.GetError().GetMessage()
                  << std::endl;
    }

    return outcome.IsSuccess();
}

  • 如需 API 詳細資訊，請參閱 CreateJob AWS SDK for C++ 參考中的 API。

下列程式碼範例示範如何使用 GetJob。

C++ 的 SDK
注意

還有更多 on GitHub。尋找完整範例，並了解如何在 AWS 程式碼範例儲存庫中設定和執行。

//! Retrieve the information for a specific completed transcoding job.
/*!
  \param jobID: A job ID.
  \param clientConfiguration: AWS client configuration.
  \return bool: Function succeeded.
 */
bool AwsDoc::MediaConvert::getJob(const Aws::String &jobID,
                                  const Aws::Client::ClientConfiguration &clientConfiguration) {
    Aws::MediaConvert::MediaConvertClient client(clientConfiguration);

    Aws::MediaConvert::Model::GetJobRequest request;
    request.SetId(jobID);
    const Aws::MediaConvert::Model::GetJobOutcome outcome = client.GetJob(
            request);
    if (outcome.IsSuccess()) {
        std::cout << outcome.GetResult().GetJob().Jsonize().View().WriteReadable()
                  << std::endl;
    }
    else {
        std::cerr << "DescribeEndpoints error - " << outcome.GetError().GetMessage()
                  << std::endl;
    }


    return outcome.IsSuccess();
}

  • 如需 API 詳細資訊，請參閱 GetJob AWS SDK for C++ 參考中的 API。

下列程式碼範例示範如何使用 ListJobs。

C++ 的 SDK
注意

還有更多 on GitHub。尋找完整範例，並了解如何在 AWS 程式碼範例儲存庫中設定和執行。

//! Retrieve a list of created jobs.
/*!
  \param clientConfiguration: AWS client configuration.
  \return bool: Function succeeded.
 */
bool AwsDoc::MediaConvert::listJobs(
        const Aws::Client::ClientConfiguration &clientConfiguration) {

    Aws::MediaConvert::MediaConvertClient client(clientConfiguration);

    bool result = true;
    Aws::String nextToken; // Used to handle paginated results.
    do {
        Aws::MediaConvert::Model::ListJobsRequest request;
        if (!nextToken.empty()) {
            request.SetNextToken(nextToken);
        }
        const Aws::MediaConvert::Model::ListJobsOutcome outcome = client.ListJobs(
                request);
        if (outcome.IsSuccess()) {
            const Aws::Vector<Aws::MediaConvert::Model::Job> &jobs =
                    outcome.GetResult().GetJobs();
            std::cout << jobs.size() << " jobs retrieved." << std::endl;
            for (const Aws::MediaConvert::Model::Job &job: jobs) {
                std::cout << "  " << job.Jsonize().View().WriteReadable() << std::endl;
            }

            nextToken = outcome.GetResult().GetNextToken();
        }
        else {
            std::cerr << "DescribeEndpoints error - " << outcome.GetError().GetMessage()
                      << std::endl;
            result = false;
            break;

        }
    } while (!nextToken.empty());


    return result;
}

  • 如需 API 詳細資訊，請參閱 ListJobs AWS SDK for C++ 參考中的 API。