add channel mirror (#2390)

* add channel playout source (doesn't do anything yet)

* configure mirror channel

* fix mirror playback

* sync epg for mirror channel

* update changelog

CHANGELOG.md

@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ## [Unreleased]
 ### Added
 - Classic schedules: allow selecting multiple graphics elements on schedule items
+- Add channel `Playout Source` setting
+  - `Generated`: default/existing behavior where channel must have its own playout
+  - `Mirror`: channel will play content from the specified `Mirror Source Channel`'s playout
+    - This allows the exact same content on different channels with different channel settings
 
 ### Fixed
 - Fix transcoding content with bt709/pc color metadata
@@ -15,7 +19,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
   - `local_infile=ON` is required when using MySQL (for bulk inserts when building playouts)
   - ETV will set this automatically when it has permission
   - When ETV does not have permission, startup will fail with logged instructions on how to configure MySql
-- Fix scaling content in locales that don't use period as a decimal separator (e.g. `,`)
+- Fix scaling anamorphic content in locales that don't use period as a decimal separator (e.g. `,`)
 
 ### Changed
 - **BREAKING CHANGE**: change how `Scripted Schedule` system works

ErsatzTV.Application/Channels/ChannelViewModel.cs

@@ -16,7 +16,9 @@ public record ChannelViewModel(
     string StreamSelector,
     string PreferredAudioLanguageCode,
     string PreferredAudioTitle,
+    ChannelPlayoutSource PlayoutSource,
     ChannelPlayoutMode PlayoutMode,
+    int? MirrorSourceChannelId,
     StreamingMode StreamingMode,
     int? WatermarkId,
     int? FallbackFillerId,

ErsatzTV.Application/Channels/Commands/CreateChannel.cs

@@ -15,7 +15,9 @@ public record CreateChannel(
     string StreamSelector,
     string PreferredAudioLanguageCode,
     string PreferredAudioTitle,
+    ChannelPlayoutSource PlayoutSource,
     ChannelPlayoutMode PlayoutMode,
+    int? MirrorSourceChannelId,
     StreamingMode StreamingMode,
     int? WatermarkId,
     int? FallbackFillerId,

ErsatzTV.Application/Channels/Commands/CreateChannelHandler.cs

@@ -76,7 +76,9 @@ public class CreateChannelHandler(
                 Group = request.Group,
                 Categories = request.Categories,
                 FFmpegProfileId = ffmpegProfileId,
+                PlayoutSource = request.PlayoutSource,
                 PlayoutMode = request.PlayoutMode,
+                MirrorSourceChannelId = request.MirrorSourceChannelId,
                 StreamingMode = request.StreamingMode,
                 Artwork = artwork,
                 StreamSelectorMode = request.StreamSelectorMode,
@@ -94,6 +96,15 @@ public class CreateChannelHandler(
                 ShowInEpg = request.IsEnabled && request.ShowInEpg
             };
 
+            if (channel.PlayoutSource is ChannelPlayoutSource.Mirror)
+            {
+                channel.PlayoutMode = ChannelPlayoutMode.Continuous;
+            }
+            else
+            {
+                channel.MirrorSourceChannelId = null;
+            }
+
             foreach (int id in watermarkId)
             {
                 channel.WatermarkId = id;

ErsatzTV.Application/Channels/Commands/RefreshChannelDataHandler.cs

@@ -52,8 +52,10 @@ public class RefreshChannelDataHandler : IRequestHandler<RefreshChannelData>
         string targetFile = Path.Combine(FileSystemLayout.ChannelGuideCacheFolder, $"{request.ChannelNumber}.xml");
         await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
 
+        string channelNumber = request.ChannelNumber;
+
         int hiddenCount = await dbContext.Channels
-            .Where(c => c.Number == request.ChannelNumber && c.ShowInEpg == false)
+            .Where(c => c.Number == channelNumber && c.ShowInEpg == false)
             .CountAsync(cancellationToken);
         if (hiddenCount > 0)
         {
@@ -97,6 +99,17 @@ public class RefreshChannelDataHandler : IRequestHandler<RefreshChannelData>
         string otherVideoText = await File.ReadAllTextAsync(otherVideoTemplateFileName, cancellationToken);
         var otherVideoTemplate = Template.Parse(otherVideoText, otherVideoTemplateFileName);
 
+        Option<string> maybeMirrorNumber = await dbContext.Channels
+            .Filter(c => c.Number == channelNumber)
+            .Filter(c => c.PlayoutSource == ChannelPlayoutSource.Mirror && c.MirrorSourceChannelId != null)
+            .Map(c => c.MirrorSourceChannel.Number)
+            .ToListAsync(cancellationToken)
+            .Map(list => list.HeadOrNone());
+        foreach (string mirrorNumber in maybeMirrorNumber)
+        {
+            request = new RefreshChannelData(ChannelNumber: mirrorNumber);
+        }
+
         List<Playout> playouts = await dbContext.Playouts
             .AsNoTracking()
             .Filter(pi => pi.Channel.Number == request.ChannelNumber)

ErsatzTV.Application/Channels/Commands/UpdateChannel.cs

@@ -16,7 +16,9 @@ public record UpdateChannel(
     string StreamSelector,
     string PreferredAudioLanguageCode,
     string PreferredAudioTitle,
+    ChannelPlayoutSource PlayoutSource,
     ChannelPlayoutMode PlayoutMode,
+    int? MirrorSourceChannelId,
     StreamingMode StreamingMode,
     int? WatermarkId,
     int? FallbackFillerId,

ErsatzTV.Application/Channels/Commands/UpdateChannelHandler.cs

@@ -33,6 +33,8 @@ public class UpdateChannelHandler(
         UpdateChannel update,
         CancellationToken cancellationToken)
     {
+        bool hasEpgChange = c.PlayoutSource != update.PlayoutSource || c.ShowInEpg != update.ShowInEpg;
+
         c.Name = update.Name;
         c.Number = update.Number;
         c.Group = update.Group;
@@ -99,10 +101,24 @@ public class UpdateChannelHandler(
             }
         }
 
+        c.PlayoutSource = update.PlayoutSource;
         c.PlayoutMode = update.PlayoutMode;
+
+        if (c.PlayoutSource is ChannelPlayoutSource.Mirror)
+        {
+            c.PlayoutMode = ChannelPlayoutMode.Continuous;
+            hasEpgChange |= c.MirrorSourceChannelId != update.MirrorSourceChannelId;
+        }
+        else
+        {
+            c.MirrorSourceChannelId = null;
+        }
+
+        c.MirrorSourceChannelId = update.MirrorSourceChannelId;
         c.StreamingMode = update.StreamingMode;
         c.WatermarkId = update.WatermarkId;
         c.FallbackFillerId = update.FallbackFillerId;
+
         await dbContext.SaveChangesAsync(cancellationToken);
 
         searchTargets.SearchTargetsChanged();
@@ -119,8 +135,12 @@ public class UpdateChannelHandler(
         }
 
         await workerChannel.WriteAsync(new RefreshChannelList(), cancellationToken);
+        if (hasEpgChange)
+        {
+            await workerChannel.WriteAsync(new RefreshChannelData(c.Number), cancellationToken);
+        }
 
-        return ProjectToViewModel(c);
+        return ProjectToViewModel(c, c.Playouts?.Count ?? 0);
     }
 
     private static async Task<Validation<BaseError, Channel>> Validate(

ErsatzTV.Application/Channels/Mapper.cs

@@ -6,7 +6,7 @@ namespace ErsatzTV.Application.Channels;
 
 internal static class Mapper
 {
-    internal static ChannelViewModel ProjectToViewModel(Channel channel) =>
+    internal static ChannelViewModel ProjectToViewModel(Channel channel, int playoutCount) =>
         new(
             channel.Id,
             channel.Number,
@@ -19,11 +19,13 @@ internal static class Mapper
             channel.StreamSelector,
             channel.PreferredAudioLanguageCode,
             channel.PreferredAudioTitle,
+            channel.PlayoutSource,
             channel.PlayoutMode,
+            channel.MirrorSourceChannelId,
             channel.StreamingMode,
             channel.WatermarkId,
             channel.FallbackFillerId,
-            channel.Playouts?.Count ?? 0,
+            playoutCount,
             channel.PreferredSubtitleLanguageCode,
             channel.SubtitleMode,
             channel.MusicVideoCreditsMode,

ErsatzTV.Application/Channels/Queries/GetAllChannelsHandler.cs

@@ -1,4 +1,5 @@
-using ErsatzTV.Core.Interfaces.Repositories;
+using ErsatzTV.Core.Domain;
+using ErsatzTV.Core.Interfaces.Repositories;
 using static ErsatzTV.Application.Channels.Mapper;
 
 namespace ErsatzTV.Application.Channels;
@@ -8,5 +9,22 @@ public class GetAllChannelsHandler(IChannelRepository channelRepository)
 {
     public async Task<List<ChannelViewModel>> Handle(GetAllChannels request, CancellationToken cancellationToken) =>
         await channelRepository.GetAll(cancellationToken)
-            .Map(list => list.Map(ProjectToViewModel).ToList());
+            .Map(list => list.Map(c => ProjectToViewModel(c, GetPlayoutsCount(c))).ToList());
+
+    private static int GetPlayoutsCount(Channel channel)
+    {
+        var result = 0;
+
+        if (channel.Playouts != null)
+        {
+            result += channel.Playouts.Count;
+        }
+
+        if (channel.PlayoutSource is ChannelPlayoutSource.Mirror && channel.MirrorSourceChannel?.Playouts != null)
+        {
+            result += channel.MirrorSourceChannel.Playouts.Count;
+        }
+
+        return result;
+    }
 }

ErsatzTV.Application/Channels/Queries/GetChannelByIdHandler.cs

@@ -8,5 +8,5 @@ public class GetChannelByIdHandler(IChannelRepository channelRepository)
 {
     public Task<Option<ChannelViewModel>> Handle(GetChannelById request, CancellationToken cancellationToken) =>
         channelRepository.GetChannel(request.Id)
-            .MapT(ProjectToViewModel);
+            .MapT(c => ProjectToViewModel(c, 0));
 }

ErsatzTV.Application/Channels/Queries/GetChannelByNumberHandler.cs

@@ -3,12 +3,9 @@ using static ErsatzTV.Application.Channels.Mapper;
 
 namespace ErsatzTV.Application.Channels;
 
-public class GetChannelByNumberHandler : IRequestHandler<GetChannelByNumber, Option<ChannelViewModel>>
+public class GetChannelByNumberHandler(IChannelRepository channelRepository)
+    : IRequestHandler<GetChannelByNumber, Option<ChannelViewModel>>
 {
-    private readonly IChannelRepository _channelRepository;
-
-    public GetChannelByNumberHandler(IChannelRepository channelRepository) => _channelRepository = channelRepository;
-
     public Task<Option<ChannelViewModel>> Handle(GetChannelByNumber request, CancellationToken cancellationToken) =>
-        _channelRepository.GetByNumber(request.ChannelNumber).MapT(ProjectToViewModel);
+        channelRepository.GetByNumber(request.ChannelNumber).MapT(c => ProjectToViewModel(c, 0));
 }

ErsatzTV.Application/Streaming/Queries/GetPlayoutItemProcessByChannelNumberHandler.cs

@@ -183,7 +183,7 @@ public class GetPlayoutItemProcessByChannelNumberHandler : FFmpegProcessHandler<
             .Include(i => i.MediaItem)
             .ThenInclude(mi => (mi as RemoteStream).RemoteStreamMetadata)
             .Include(i => i.Watermarks)
-            .ForChannelAndTime(channel.Id, now)
+            .ForChannelAndTime(channel.MirrorSourceChannelId ?? channel.Id, now)
             .Map(o => o.ToEither<BaseError>(new UnableToLocatePlayoutItem()))
             .BindT(item => ValidatePlayoutItemPath(dbContext, item, cancellationToken));
 

ErsatzTV.Core/Domain/Channel.cs

@@ -32,7 +32,11 @@ public class Channel
     public ChannelMusicVideoCreditsMode MusicVideoCreditsMode { get; set; }
     public string MusicVideoCreditsTemplate { get; set; }
     public ChannelSongVideoMode SongVideoMode { get; set; }
+    public ChannelPlayoutSource PlayoutSource { get; set; }
     public ChannelPlayoutMode PlayoutMode { get; set; }
+    public int? MirrorSourceChannelId { get; set; }
+    public Channel MirrorSourceChannel { get; set; }
+    public TimeSpan? PlayoutOffset { get; set; }
     public ChannelTranscodeMode TranscodeMode { get; set; }
     public ChannelIdleBehavior IdleBehavior { get; set; }
     public bool IsEnabled { get; set; }

ErsatzTV.Core/Domain/ChannelPlayoutSource.cs

@@ -0,0 +1,7 @@
+namespace ErsatzTV.Core.Domain;
+
+public enum ChannelPlayoutSource
+{
+    Generated = 0,
+    Mirror = 1
+}

ErsatzTV.Infrastructure.MySql/Migrations/20250907150553_Add_ChannelPlayoutSource.cs

@@ -0,0 +1,71 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace ErsatzTV.Infrastructure.MySql.Migrations
+{
+    /// <inheritdoc />
+    public partial class Add_ChannelPlayoutSource : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<int>(
+                name: "MirrorSourceChannelId",
+                table: "Channel",
+                type: "int",
+                nullable: true);
+
+            migrationBuilder.AddColumn<TimeSpan>(
+                name: "PlayoutOffset",
+                table: "Channel",
+                type: "time(6)",
+                nullable: true);
+
+            migrationBuilder.AddColumn<int>(
+                name: "PlayoutSource",
+                table: "Channel",
+                type: "int",
+                nullable: false,
+                defaultValue: 0);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Channel_MirrorSourceChannelId",
+                table: "Channel",
+                column: "MirrorSourceChannelId");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Channel_Channel_MirrorSourceChannelId",
+                table: "Channel",
+                column: "MirrorSourceChannelId",
+                principalTable: "Channel",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.SetNull);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Channel_Channel_MirrorSourceChannelId",
+                table: "Channel");
+
+            migrationBuilder.DropIndex(
+                name: "IX_Channel_MirrorSourceChannelId",
+                table: "Channel");
+
+            migrationBuilder.DropColumn(
+                name: "MirrorSourceChannelId",
+                table: "Channel");
+
+            migrationBuilder.DropColumn(
+                name: "PlayoutOffset",
+                table: "Channel");
+
+            migrationBuilder.DropColumn(
+                name: "PlayoutSource",
+                table: "Channel");
+        }
+    }
+}

ErsatzTV.Infrastructure.MySql/Migrations/TvContextModelSnapshot.cs

@@ -277,6 +277,9 @@ namespace ErsatzTV.Infrastructure.MySql.Migrations
                         .HasColumnType("tinyint(1)")
                         .HasDefaultValue(true);
 
+                    b.Property<int?>("MirrorSourceChannelId")
+                        .HasColumnType("int");
+
                     b.Property<int>("MusicVideoCreditsMode")
                         .HasColumnType("int");
 
@@ -292,6 +295,12 @@ namespace ErsatzTV.Infrastructure.MySql.Migrations
                     b.Property<int>("PlayoutMode")
                         .HasColumnType("int");
 
+                    b.Property<TimeSpan?>("PlayoutOffset")
+                        .HasColumnType("time(6)");
+
+                    b.Property<int>("PlayoutSource")
+                        .HasColumnType("int");
+
                     b.Property<string>("PreferredAudioLanguageCode")
                         .HasColumnType("longtext");
 
@@ -336,6 +345,8 @@ namespace ErsatzTV.Infrastructure.MySql.Migrations
 
                     b.HasIndex("FallbackFillerId");
 
+                    b.HasIndex("MirrorSourceChannelId");
+
                     b.HasIndex("Number")
                         .IsUnique();
 
@@ -4048,6 +4059,11 @@ namespace ErsatzTV.Infrastructure.MySql.Migrations
                         .HasForeignKey("FallbackFillerId")
                         .OnDelete(DeleteBehavior.SetNull);
 
+                    b.HasOne("ErsatzTV.Core.Domain.Channel", "MirrorSourceChannel")
+                        .WithMany()
+                        .HasForeignKey("MirrorSourceChannelId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
                     b.HasOne("ErsatzTV.Core.Domain.ChannelWatermark", "Watermark")
                         .WithMany()
                         .HasForeignKey("WatermarkId")
@@ -4057,6 +4073,8 @@ namespace ErsatzTV.Infrastructure.MySql.Migrations
 
                     b.Navigation("FallbackFiller");
 
+                    b.Navigation("MirrorSourceChannel");
+
                     b.Navigation("Watermark");
                 });
 

ErsatzTV.Infrastructure.Sqlite/Migrations/20250907150639_Add_ChannelPlayoutSource.cs

@@ -0,0 +1,71 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace ErsatzTV.Infrastructure.Sqlite.Migrations
+{
+    /// <inheritdoc />
+    public partial class Add_ChannelPlayoutSource : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<int>(
+                name: "MirrorSourceChannelId",
+                table: "Channel",
+                type: "INTEGER",
+                nullable: true);
+
+            migrationBuilder.AddColumn<TimeSpan>(
+                name: "PlayoutOffset",
+                table: "Channel",
+                type: "TEXT",
+                nullable: true);
+
+            migrationBuilder.AddColumn<int>(
+                name: "PlayoutSource",
+                table: "Channel",
+                type: "INTEGER",
+                nullable: false,
+                defaultValue: 0);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Channel_MirrorSourceChannelId",
+                table: "Channel",
+                column: "MirrorSourceChannelId");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Channel_Channel_MirrorSourceChannelId",
+                table: "Channel",
+                column: "MirrorSourceChannelId",
+                principalTable: "Channel",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.SetNull);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Channel_Channel_MirrorSourceChannelId",
+                table: "Channel");
+
+            migrationBuilder.DropIndex(
+                name: "IX_Channel_MirrorSourceChannelId",
+                table: "Channel");
+
+            migrationBuilder.DropColumn(
+                name: "MirrorSourceChannelId",
+                table: "Channel");
+
+            migrationBuilder.DropColumn(
+                name: "PlayoutOffset",
+                table: "Channel");
+
+            migrationBuilder.DropColumn(
+                name: "PlayoutSource",
+                table: "Channel");
+        }
+    }
+}

ErsatzTV.Infrastructure.Sqlite/Migrations/TvContextModelSnapshot.cs

@@ -264,6 +264,9 @@ namespace ErsatzTV.Infrastructure.Sqlite.Migrations
                         .HasColumnType("INTEGER")
                         .HasDefaultValue(true);
 
+                    b.Property<int?>("MirrorSourceChannelId")
+                        .HasColumnType("INTEGER");
+
                     b.Property<int>("MusicVideoCreditsMode")
                         .HasColumnType("INTEGER");
 
@@ -279,6 +282,12 @@ namespace ErsatzTV.Infrastructure.Sqlite.Migrations
                     b.Property<int>("PlayoutMode")
                         .HasColumnType("INTEGER");
 
+                    b.Property<TimeSpan?>("PlayoutOffset")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int>("PlayoutSource")
+                        .HasColumnType("INTEGER");
+
                     b.Property<string>("PreferredAudioLanguageCode")
                         .HasColumnType("TEXT");
 
@@ -323,6 +332,8 @@ namespace ErsatzTV.Infrastructure.Sqlite.Migrations
 
                     b.HasIndex("FallbackFillerId");
 
+                    b.HasIndex("MirrorSourceChannelId");
+
                     b.HasIndex("Number")
                         .IsUnique();
 
@@ -3883,6 +3894,11 @@ namespace ErsatzTV.Infrastructure.Sqlite.Migrations
                         .HasForeignKey("FallbackFillerId")
                         .OnDelete(DeleteBehavior.SetNull);
 
+                    b.HasOne("ErsatzTV.Core.Domain.Channel", "MirrorSourceChannel")
+                        .WithMany()
+                        .HasForeignKey("MirrorSourceChannelId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
                     b.HasOne("ErsatzTV.Core.Domain.ChannelWatermark", "Watermark")
                         .WithMany()
                         .HasForeignKey("WatermarkId")
@@ -3892,6 +3908,8 @@ namespace ErsatzTV.Infrastructure.Sqlite.Migrations
 
                     b.Navigation("FallbackFiller");
 
+                    b.Navigation("MirrorSourceChannel");
+
                     b.Navigation("Watermark");
                 });
 

ErsatzTV.Infrastructure/Data/Configurations/ChannelConfiguration.cs

@@ -43,5 +43,11 @@ public class ChannelConfiguration : IEntityTypeConfiguration<Channel>
         builder.Property(c => c.Group)
             .IsRequired()
             .HasDefaultValue("ErsatzTV");
+
+        builder.HasOne(i => i.MirrorSourceChannel)
+            .WithMany()
+            .HasForeignKey(i => i.MirrorSourceChannelId)
+            .OnDelete(DeleteBehavior.SetNull)
+            .IsRequired(false);
     }
 }

ErsatzTV.Infrastructure/Data/Repositories/ChannelRepository.cs

@@ -45,6 +45,8 @@ public class ChannelRepository : IChannelRepository
             .Include(c => c.FFmpegProfile)
             .Include(c => c.Artwork)
             .Include(c => c.Playouts)
+            .Include(c => c.MirrorSourceChannel)
+            .ThenInclude(mc => mc.Playouts)
             .ToListAsync(cancellationToken);
     }
 

ErsatzTV/Pages/ChannelEditor.razor

@@ -1,5 +1,6 @@
 @page "/channels/{Id:int?}"
 @page "/channels/add"
+@using System.Globalization
 @using ErsatzTV.Application.Artworks
 @using ErsatzTV.Application.Channels
 @using ErsatzTV.Application.FFmpegProfiles
@@ -69,13 +70,41 @@
 </MudStack>
 <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
     <div class="d-flex">
-        <MudText>Playout Mode</MudText>
+        <MudText>Playout Source</MudText>
     </div>
-    <MudSelect @bind-Value="_model.PlayoutMode" For="@(() => _model.PlayoutMode)" HelperText="Controls the progression of the channel's playout">
-        <MudSelectItem Value="@(ChannelPlayoutMode.Continuous)">Continuous</MudSelectItem>
-        <MudSelectItem Value="@(ChannelPlayoutMode.OnDemand)">On Demand</MudSelectItem>
+    <MudSelect @bind-Value="_model.PlayoutSource" For="@(() => _model.PlayoutSource)" HelperText="Controls the source of the channel's content">
+        <MudSelectItem Value="@(ChannelPlayoutSource.Generated)">Generated</MudSelectItem>
+        <MudSelectItem Value="@(ChannelPlayoutSource.Mirror)">Mirror</MudSelectItem>
     </MudSelect>
 </MudStack>
+@if (_model.PlayoutSource is ChannelPlayoutSource.Mirror)
+{
+    <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
+        <div class="d-flex">
+            <MudText>Mirror Source Channel</MudText>
+        </div>
+        <MudSelect @bind-Value="_model.MirrorSourceChannelId" For="@(() => _model.MirrorSourceChannelId)"
+                   Clearable="true">
+            <MudSelectItem T="int?" Value="@((int?)null)">(none)</MudSelectItem>
+            @foreach (ChannelViewModel channel in _channels.OrderBy(c => decimal.Parse(c.Number, CultureInfo.InvariantCulture)))
+            {
+                <MudSelectItem T="int?" Value="@channel.Id">(@channel.Number) - @channel.Name</MudSelectItem>
+            }
+        </MudSelect>
+    </MudStack>
+}
+else
+{
+    <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
+        <div class="d-flex">
+            <MudText>Playout Mode</MudText>
+        </div>
+        <MudSelect @bind-Value="_model.PlayoutMode" For="@(() => _model.PlayoutMode)" HelperText="Controls the progression of the channel's playout">
+            <MudSelectItem Value="@(ChannelPlayoutMode.Continuous)">Continuous</MudSelectItem>
+            <MudSelectItem Value="@(ChannelPlayoutMode.OnDemand)">On Demand</MudSelectItem>
+        </MudSelect>
+    </MudStack>
+}
 <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
     <div class="d-flex">
         <MudText>Is Enabled</MudText>
@@ -285,6 +314,7 @@ else
     private readonly ChannelEditViewModelValidator _validator = new();
     private MudForm _form;
 
+    private List<ChannelViewModel> _channels = [];
     private List<FFmpegProfileViewModel> _ffmpegProfiles = [];
     private List<LanguageCodeViewModel> _availableCultures = [];
     private List<WatermarkViewModel> _watermarks = [];
@@ -309,6 +339,7 @@ else
         {
             var loadingTasks = new List<Task>
             {
+                LoadDataAsync(() => Mediator.Send(new GetAllChannels(), token), r => _channels = r),
                 LoadDataAsync(() => Mediator.Send(new GetAllFFmpegProfiles(), token), r => _ffmpegProfiles = r),
                 LoadDataAsync(() => Mediator.Send(new GetAllLanguageCodes(), token), r => _availableCultures = r),
                 LoadDataAsync(() => Mediator.Send(new GetAllWatermarks(), token), r => _watermarks = r),
@@ -342,7 +373,9 @@ else
                             _model.Logo = channelViewModel.Logo;
                         }
 
+                        _model.PlayoutSource = channelViewModel.PlayoutSource;
                         _model.PlayoutMode = channelViewModel.PlayoutMode;
+                        _model.MirrorSourceChannelId = channelViewModel.MirrorSourceChannelId;
                         _model.StreamingMode = channelViewModel.StreamingMode;
                         _model.StreamSelectorMode = channelViewModel.StreamSelectorMode;
                         _model.StreamSelector = channelViewModel.StreamSelector;

ErsatzTV/ViewModels/ChannelEditViewModel.cs

@@ -19,7 +19,9 @@ public class ChannelEditViewModel
     public string PreferredAudioTitle { get; set; }
     public ArtworkContentTypeModel Logo { get; set; }
     public string ExternalLogoUrl { get; set; }
+    public ChannelPlayoutSource PlayoutSource { get; set; }
     public ChannelPlayoutMode PlayoutMode { get; set; }
+    public int? MirrorSourceChannelId { get; set; }
     public StreamingMode StreamingMode { get; set; }
     public int? WatermarkId { get; set; }
     public int? FallbackFillerId { get; set; }
@@ -56,7 +58,9 @@ public class ChannelEditViewModel
             StreamSelector,
             PreferredAudioLanguageCode,
             PreferredAudioTitle,
+            PlayoutSource,
             PlayoutMode,
+            MirrorSourceChannelId,
             StreamingMode,
             WatermarkId,
             FallbackFillerId,
@@ -84,7 +88,9 @@ public class ChannelEditViewModel
             StreamSelector,
             PreferredAudioLanguageCode,
             PreferredAudioTitle,
+            PlayoutSource,
             PlayoutMode,
+            MirrorSourceChannelId,
             StreamingMode,
             WatermarkId,
             FallbackFillerId,