package main

import (
	"fmt"
	"log"

	"google.golang.org/api/youtube/v3"
)

// Retrieve playlistItems in the specified playlist
func playlistItemsList(service *youtube.Service, part string, playlistId string, pageToken string) *youtube.PlaylistItemListResponse {
	call := service.PlaylistItems.List(part)
	call = call.PlaylistId(playlistId)
	if pageToken != "" {
		call = call.PageToken(pageToken)
	}
	response, err := call.Do()
	handleError(err, "")
	return response
}

// Retrieve resource for the authenticated user's channel
func channelsListMine(service *youtube.Service, part string) *youtube.ChannelListResponse {
	call := service.Channels.List(part)
	call = call.Mine(true)
	response, err := call.Do()
	handleError(err, "")
	return response
}

func main() {
	client := getClient(youtube.YoutubeReadonlyScope)
	service, err := youtube.New(client)
	
	if err != nil {
		log.Fatalf("Error creating YouTube client: %v", err)
	}

	response := channelsListMine(service, "contentDetails")

	for _, channel := range response.Items {
		playlistId := channel.ContentDetails.RelatedPlaylists.Uploads
		
		// Print the playlist ID for the list of uploaded videos.
		fmt.Printf("Videos in list %s\r\n", playlistId)

		nextPageToken := ""
		for {
			// Retrieve next set of items in the playlist.
			playlistResponse := playlistItemsList(service, "snippet", playlistId, nextPageToken)
			
			for _, playlistItem := range playlistResponse.Items {
				title := playlistItem.Snippet.Title
				videoId := playlistItem.Snippet.ResourceId.VideoId
				fmt.Printf("%v, (%v)\r\n", title, videoId)
			}

			// Set the token to retrieve the next page of results
			// or exit the loop if all results have been retrieved.
			nextPageToken = playlistResponse.NextPageToken
			if nextPageToken == "" {
				break
			}
			fmt.Println()
		}
	}
}
my_uploads.go

using System;
using System.IO;
using System.Reflection;
using System.Threading;
using System.Threading.Tasks;

using Google.Apis.Auth.OAuth2;
using Google.Apis.Services;
using Google.Apis.Upload;
using Google.Apis.Util.Store;
using Google.Apis.YouTube.v3;
using Google.Apis.YouTube.v3.Data;

namespace Google.Apis.YouTube.Samples
{
  /// <summary>
  /// YouTube Data API v3 sample: retrieve my uploads.
  /// Relies on the Google APIs Client Library for .NET, v1.7.0 or higher.
  /// See https://developers.google.com/api-client-library/dotnet/get_started
  /// </summary>
  internal class MyUploads
  {
    [STAThread]
    static void Main(string[] args)
    {
      Console.WriteLine("YouTube Data API: My Uploads");
      Console.WriteLine("============================");

      try
      {
        new MyUploads().Run().Wait();
      }
      catch (AggregateException ex)
      {
        foreach (var e in ex.InnerExceptions)
        {
          Console.WriteLine("Error: " + e.Message);
        }
      }

      Console.WriteLine("Press any key to continue...");
      Console.ReadKey();
    }

    private async Task Run()
    {
      UserCredential credential;
      using (var stream = new FileStream("client_secrets.json", FileMode.Open, FileAccess.Read))
      {
        credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(
            GoogleClientSecrets.Load(stream).Secrets,
            // This OAuth 2.0 access scope allows for read-only access to the authenticated 
            // user's account, but not other types of account access.
            new[] { YouTubeService.Scope.YoutubeReadonly },
            "user",
            CancellationToken.None,
            new FileDataStore(this.GetType().ToString())
        );
      }

      var youtubeService = new YouTubeService(new BaseClientService.Initializer()
      {
        HttpClientInitializer = credential,
        ApplicationName = this.GetType().ToString()
      });

      var channelsListRequest = youtubeService.Channels.List("contentDetails");
      channelsListRequest.Mine = true;

      // Retrieve the contentDetails part of the channel resource for the authenticated user's channel.
      var channelsListResponse = await channelsListRequest.ExecuteAsync();

      foreach (var channel in channelsListResponse.Items)
      {
        // From the API response, extract the playlist ID that identifies the list
        // of videos uploaded to the authenticated user's channel.
        var uploadsListId = channel.ContentDetails.RelatedPlaylists.Uploads;

        Console.WriteLine("Videos in list {0}", uploadsListId);

        var nextPageToken = "";
        while (nextPageToken != null)
        {
          var playlistItemsListRequest = youtubeService.PlaylistItems.List("snippet");
          playlistItemsListRequest.PlaylistId = uploadsListId;
          playlistItemsListRequest.MaxResults = 50;
          playlistItemsListRequest.PageToken = nextPageToken;

          // Retrieve the list of videos uploaded to the authenticated user's channel.
          var playlistItemsListResponse = await playlistItemsListRequest.ExecuteAsync();

          foreach (var playlistItem in playlistItemsListResponse.Items)
          {
            // Print information about each video.
            Console.WriteLine("{0} ({1})", playlistItem.Snippet.Title, playlistItem.Snippet.ResourceId.VideoId);
          }

          nextPageToken = playlistItemsListResponse.NextPageToken;
        }
      }
    }
  }
}
MyUploads.cs

#!/usr/bin/ruby

require 'rubygems'
gem 'google-api-client', '>0.7'
require 'google/api_client'
require 'google/api_client/client_secrets'
require 'google/api_client/auth/file_storage'
require 'google/api_client/auth/installed_app'

# This OAuth 2.0 access scope allows for read-only access to the authenticated
# user's account, but not other types of account access.
YOUTUBE_READONLY_SCOPE = 'https://www.googleapis.com/auth/youtube.readonly'
YOUTUBE_API_SERVICE_NAME = 'youtube'
YOUTUBE_API_VERSION = 'v3'

def get_authenticated_service
  client = Google::APIClient.new(
    :application_name => $PROGRAM_NAME,
    :application_version => '1.0.0'
  )
  youtube = client.discovered_api(YOUTUBE_API_SERVICE_NAME, YOUTUBE_API_VERSION)

  file_storage = Google::APIClient::FileStorage.new("#{$PROGRAM_NAME}-oauth2.json")
  if file_storage.authorization.nil?
    client_secrets = Google::APIClient::ClientSecrets.load
    flow = Google::APIClient::InstalledAppFlow.new(
      :client_id => client_secrets.client_id,
      :client_secret => client_secrets.client_secret,
      :scope => [YOUTUBE_READONLY_SCOPE]
    )
    client.authorization = flow.authorize(file_storage)
  else
    client.authorization = file_storage.authorization
  end

  return client, youtube
end

def main
  client, youtube = get_authenticated_service

  begin
    # Retrieve the "contentDetails" part of the channel resource for the
    # authenticated user's channel.
    channels_response = client.execute!(
      :api_method => youtube.channels.list,
      :parameters => {
        :mine => true,
        :part => 'contentDetails'
      }
    )

    channels_response.data.items.each do |channel|
      # From the API response, extract the playlist ID that identifies the list
      # of videos uploaded to the authenticated user's channel.
      uploads_list_id = channel['contentDetails']['relatedPlaylists']['uploads']

      # Retrieve the list of videos uploaded to the authenticated user's channel.
      next_page_token = ''
      until next_page_token.nil?
        playlistitems_response = client.execute!(
          :api_method => youtube.playlist_items.list,
          :parameters => {
            :playlistId => uploads_list_id,
            :part => 'snippet',
            :maxResults => 50,
            :pageToken => next_page_token
          }
        )

        puts "Videos in list #{uploads_list_id}"

        # Print information about each video.
        playlistitems_response.data.items.each do |playlist_item|
          title = playlist_item['snippet']['title']
          video_id = playlist_item['snippet']['resourceId']['videoId']

          puts "#{title} (#{video_id})"
        end

        next_page_token = playlistitems_response.next_page_token
      end

      puts
    end
  rescue Google::APIClient::TransmissionError => e
    puts e.result.body
  end
end

main
my_uploads.rb