Merge branch 'master' into removeGlobalSubtitleConfiguration

3 files changed, 450 insertions, 1 deletions

diff --git a/tests/Jellyfin.MediaEncoding.Tests/Probing/ProbeResultNormalizerTests.cs b/tests/Jellyfin.MediaEncoding.Tests/Probing/ProbeResultNormalizerTests.cs
index 94710a0957..3369af0e84 100644
--- a/tests/Jellyfin.MediaEncoding.Tests/Probing/ProbeResultNormalizerTests.cs
+++ b/tests/Jellyfin.MediaEncoding.Tests/Probing/ProbeResultNormalizerTests.cs
@@ -39,6 +39,23 @@ namespace Jellyfin.MediaEncoding.Tests.Probing
         public void GetFrameRate_Success(string value, float? expected)
             => Assert.Equal(expected, ProbeResultNormalizer.GetFrameRate(value));
 
+        [Theory]
+        [InlineData("1:1", true)]
+        [InlineData("3201:3200", true)]
+        [InlineData("1215:1216", true)]
+        [InlineData("1001:1000", true)]
+        [InlineData("16:15", false)]
+        [InlineData("8:9", false)]
+        [InlineData("32:27", false)]
+        [InlineData("10:11", false)]
+        [InlineData("64:45", false)]
+        [InlineData("4:3", false)]
+        [InlineData("0:1", false)]
+        [InlineData("", false)]
+        [InlineData(null, false)]
+        public void IsNearSquarePixelSar_DetectsCorrectly(string? sar, bool expected)
+            => Assert.Equal(expected, ProbeResultNormalizer.IsNearSquarePixelSar(sar));
+
         [Fact]
         public void GetMediaInfo_MetaData_Success()
         {
@@ -123,6 +140,7 @@ namespace Jellyfin.MediaEncoding.Tests.Probing
             Assert.Equal(358, res.VideoStream.Height);
             Assert.Equal(720, res.VideoStream.Width);
             Assert.Equal("2.40:1", res.VideoStream.AspectRatio);
+            Assert.True(res.VideoStream.IsAnamorphic); // SAR 32:27 — genuinely anamorphic NTSC DVD 16:9
             Assert.Equal("yuv420p", res.VideoStream.PixelFormat);
             Assert.Equal(31d, res.VideoStream.Level);
             Assert.Equal(1, res.VideoStream.RefFrames);
@@ -191,8 +209,20 @@ namespace Jellyfin.MediaEncoding.Tests.Probing
             Assert.Equal("mkv,webm", res.Container);
 
             Assert.Equal(2, res.MediaStreams.Count);
+            Assert.Equal(540, res.MediaStreams[0].Width);
+            Assert.Equal(360, res.MediaStreams[0].Height);
+        }
 
-            Assert.False(res.MediaStreams[0].IsAVC);
+        [Fact]
+        public void GetMediaInfo_WebM_Like_Mkv()
+        {
+            var bytes = File.ReadAllBytes("Test Data/Probing/video_web_like_mkv_with_subtitle.json");
+            var internalMediaInfoResult = JsonSerializer.Deserialize<InternalMediaInfoResult>(bytes, _jsonOptions);
+
+            MediaInfo res = _probeResultNormalizer.GetMediaInfo(internalMediaInfoResult, VideoType.VideoFile, false, "Test Data/Probing/video_metadata.mkv", MediaProtocol.File);
+
+            Assert.Equal("mkv", res.Container);
+            Assert.Equal(3, res.MediaStreams.Count);
         }
 
         [Fact]
diff --git a/tests/Jellyfin.MediaEncoding.Tests/Subtitles/FilterEventsTests.cs b/tests/Jellyfin.MediaEncoding.Tests/Subtitles/FilterEventsTests.cs
new file mode 100644
index 0000000000..5f84e85592
--- /dev/null
+++ b/tests/Jellyfin.MediaEncoding.Tests/Subtitles/FilterEventsTests.cs
@@ -0,0 +1,282 @@
+using System;
+using AutoFixture;
+using AutoFixture.AutoMoq;
+using MediaBrowser.MediaEncoding.Subtitles;
+using MediaBrowser.Model.MediaInfo;
+using Xunit;
+
+namespace Jellyfin.MediaEncoding.Subtitles.Tests
+{
+    public class FilterEventsTests
+    {
+        private readonly SubtitleEncoder _encoder;
+
+        public FilterEventsTests()
+        {
+            var fixture = new Fixture().Customize(new AutoMoqCustomization { ConfigureMembers = true });
+            _encoder = fixture.Create<SubtitleEncoder>();
+        }
+
+        [Fact]
+        public void FilterEvents_SubtitleSpanningSegmentBoundary_IsRetained()
+        {
+            // Subtitle starts at 5s, ends at 15s.
+            // Segment requested from 10s to 20s.
+            // The subtitle is still on screen at 10s and should NOT be dropped.
+            var track = new SubtitleTrackInfo
+            {
+                TrackEvents = new[]
+                {
+                    new SubtitleTrackEvent("1", "Still on screen")
+                    {
+                        StartPositionTicks = TimeSpan.FromSeconds(5).Ticks,
+                        EndPositionTicks = TimeSpan.FromSeconds(15).Ticks
+                    },
+                    new SubtitleTrackEvent("2", "Next subtitle")
+                    {
+                        StartPositionTicks = TimeSpan.FromSeconds(12).Ticks,
+                        EndPositionTicks = TimeSpan.FromSeconds(17).Ticks
+                    }
+                }
+            };
+
+            _encoder.FilterEvents(
+                track,
+                startPositionTicks: TimeSpan.FromSeconds(10).Ticks,
+                endTimeTicks: TimeSpan.FromSeconds(20).Ticks,
+                preserveTimestamps: true);
+
+            Assert.Equal(2, track.TrackEvents.Count);
+            Assert.Equal("1", track.TrackEvents[0].Id);
+            Assert.Equal("2", track.TrackEvents[1].Id);
+        }
+
+        [Fact]
+        public void FilterEvents_SubtitleFullyBeforeSegment_IsDropped()
+        {
+            // Subtitle starts at 2s, ends at 5s.
+            // Segment requested from 10s.
+            // The subtitle ended before the segment — should be dropped.
+            var track = new SubtitleTrackInfo
+            {
+                TrackEvents = new[]
+                {
+                    new SubtitleTrackEvent("1", "Already gone")
+                    {
+                        StartPositionTicks = TimeSpan.FromSeconds(2).Ticks,
+                        EndPositionTicks = TimeSpan.FromSeconds(5).Ticks
+                    },
+                    new SubtitleTrackEvent("2", "Visible")
+                    {
+                        StartPositionTicks = TimeSpan.FromSeconds(12).Ticks,
+                        EndPositionTicks = TimeSpan.FromSeconds(17).Ticks
+                    }
+                }
+            };
+
+            _encoder.FilterEvents(
+                track,
+                startPositionTicks: TimeSpan.FromSeconds(10).Ticks,
+                endTimeTicks: TimeSpan.FromSeconds(20).Ticks,
+                preserveTimestamps: true);
+
+            Assert.Single(track.TrackEvents);
+            Assert.Equal("2", track.TrackEvents[0].Id);
+        }
+
+        [Fact]
+        public void FilterEvents_SubtitleAfterSegment_IsDropped()
+        {
+            // Segment is 10s-20s, subtitle starts at 25s.
+            var track = new SubtitleTrackInfo
+            {
+                TrackEvents = new[]
+                {
+                    new SubtitleTrackEvent("1", "In range")
+                    {
+                        StartPositionTicks = TimeSpan.FromSeconds(12).Ticks,
+                        EndPositionTicks = TimeSpan.FromSeconds(15).Ticks
+                    },
+                    new SubtitleTrackEvent("2", "After segment")
+                    {
+                        StartPositionTicks = TimeSpan.FromSeconds(25).Ticks,
+                        EndPositionTicks = TimeSpan.FromSeconds(30).Ticks
+                    }
+                }
+            };
+
+            _encoder.FilterEvents(
+                track,
+                startPositionTicks: TimeSpan.FromSeconds(10).Ticks,
+                endTimeTicks: TimeSpan.FromSeconds(20).Ticks,
+                preserveTimestamps: true);
+
+            Assert.Single(track.TrackEvents);
+            Assert.Equal("1", track.TrackEvents[0].Id);
+        }
+
+        [Fact]
+        public void FilterEvents_PreserveTimestampsFalse_AdjustsTimestamps()
+        {
+            var track = new SubtitleTrackInfo
+            {
+                TrackEvents = new[]
+                {
+                    new SubtitleTrackEvent("1", "Subtitle")
+                    {
+                        StartPositionTicks = TimeSpan.FromSeconds(15).Ticks,
+                        EndPositionTicks = TimeSpan.FromSeconds(20).Ticks
+                    }
+                }
+            };
+
+            _encoder.FilterEvents(
+                track,
+                startPositionTicks: TimeSpan.FromSeconds(10).Ticks,
+                endTimeTicks: TimeSpan.FromSeconds(30).Ticks,
+                preserveTimestamps: false);
+
+            Assert.Single(track.TrackEvents);
+            // Timestamps should be shifted back by 10s
+            Assert.Equal(TimeSpan.FromSeconds(5).Ticks, track.TrackEvents[0].StartPositionTicks);
+            Assert.Equal(TimeSpan.FromSeconds(10).Ticks, track.TrackEvents[0].EndPositionTicks);
+        }
+
+        [Fact]
+        public void FilterEvents_PreserveTimestampsTrue_KeepsOriginalTimestamps()
+        {
+            var startTicks = TimeSpan.FromSeconds(15).Ticks;
+            var endTicks = TimeSpan.FromSeconds(20).Ticks;
+
+            var track = new SubtitleTrackInfo
+            {
+                TrackEvents = new[]
+                {
+                    new SubtitleTrackEvent("1", "Subtitle")
+                    {
+                        StartPositionTicks = startTicks,
+                        EndPositionTicks = endTicks
+                    }
+                }
+            };
+
+            _encoder.FilterEvents(
+                track,
+                startPositionTicks: TimeSpan.FromSeconds(10).Ticks,
+                endTimeTicks: TimeSpan.FromSeconds(30).Ticks,
+                preserveTimestamps: true);
+
+            Assert.Single(track.TrackEvents);
+            Assert.Equal(startTicks, track.TrackEvents[0].StartPositionTicks);
+            Assert.Equal(endTicks, track.TrackEvents[0].EndPositionTicks);
+        }
+
+        [Fact]
+        public void FilterEvents_SubtitleEndingExactlyAtSegmentStart_IsRetained()
+        {
+            // Subtitle ends exactly when the segment begins.
+            // EndPositionTicks == startPositionTicks means (end - start) == 0, not < 0,
+            // so SkipWhile stops and the subtitle is retained.
+            var track = new SubtitleTrackInfo
+            {
+                TrackEvents = new[]
+                {
+                    new SubtitleTrackEvent("1", "Boundary subtitle")
+                    {
+                        StartPositionTicks = TimeSpan.FromSeconds(5).Ticks,
+                        EndPositionTicks = TimeSpan.FromSeconds(10).Ticks
+                    },
+                    new SubtitleTrackEvent("2", "In range")
+                    {
+                        StartPositionTicks = TimeSpan.FromSeconds(12).Ticks,
+                        EndPositionTicks = TimeSpan.FromSeconds(15).Ticks
+                    }
+                }
+            };
+
+            _encoder.FilterEvents(
+                track,
+                startPositionTicks: TimeSpan.FromSeconds(10).Ticks,
+                endTimeTicks: TimeSpan.FromSeconds(20).Ticks,
+                preserveTimestamps: true);
+
+            Assert.Equal(2, track.TrackEvents.Count);
+            Assert.Equal("1", track.TrackEvents[0].Id);
+        }
+
+        [Fact]
+        public void FilterEvents_SpanningBoundaryWithTimestampAdjustment_DoesNotProduceNegativeTimestamps()
+        {
+            // Subtitle starts at 5s, ends at 15s.
+            // Segment requested from 10s to 20s, preserveTimestamps = false.
+            // The subtitle spans the boundary and is retained, but shifting
+            // StartPositionTicks by -10s would produce -5s (negative).
+            var track = new SubtitleTrackInfo
+            {
+                TrackEvents = new[]
+                {
+                    new SubtitleTrackEvent("1", "Spans boundary")
+                    {
+                        StartPositionTicks = TimeSpan.FromSeconds(5).Ticks,
+                        EndPositionTicks = TimeSpan.FromSeconds(15).Ticks
+                    },
+                    new SubtitleTrackEvent("2", "Fully in range")
+                    {
+                        StartPositionTicks = TimeSpan.FromSeconds(12).Ticks,
+                        EndPositionTicks = TimeSpan.FromSeconds(17).Ticks
+                    }
+                }
+            };
+
+            _encoder.FilterEvents(
+                track,
+                startPositionTicks: TimeSpan.FromSeconds(10).Ticks,
+                endTimeTicks: TimeSpan.FromSeconds(20).Ticks,
+                preserveTimestamps: false);
+
+            Assert.Equal(2, track.TrackEvents.Count);
+            // Subtitle 1: start should be clamped to 0, not -5s
+            Assert.True(track.TrackEvents[0].StartPositionTicks >= 0, "StartPositionTicks must not be negative");
+            Assert.Equal(TimeSpan.FromSeconds(5).Ticks, track.TrackEvents[0].EndPositionTicks);
+            // Subtitle 2: normal shift (12s - 10s = 2s, 17s - 10s = 7s)
+            Assert.Equal(TimeSpan.FromSeconds(2).Ticks, track.TrackEvents[1].StartPositionTicks);
+            Assert.Equal(TimeSpan.FromSeconds(7).Ticks, track.TrackEvents[1].EndPositionTicks);
+        }
+
+        [Fact]
+        public void FilterEvents_NoEndTimeTicks_ReturnsAllFromStartPosition()
+        {
+            var track = new SubtitleTrackInfo
+            {
+                TrackEvents = new[]
+                {
+                    new SubtitleTrackEvent("1", "Before")
+                    {
+                        StartPositionTicks = TimeSpan.FromSeconds(2).Ticks,
+                        EndPositionTicks = TimeSpan.FromSeconds(4).Ticks
+                    },
+                    new SubtitleTrackEvent("2", "After")
+                    {
+                        StartPositionTicks = TimeSpan.FromSeconds(12).Ticks,
+                        EndPositionTicks = TimeSpan.FromSeconds(15).Ticks
+                    },
+                    new SubtitleTrackEvent("3", "Much later")
+                    {
+                        StartPositionTicks = TimeSpan.FromSeconds(500).Ticks,
+                        EndPositionTicks = TimeSpan.FromSeconds(505).Ticks
+                    }
+                }
+            };
+
+            _encoder.FilterEvents(
+                track,
+                startPositionTicks: TimeSpan.FromSeconds(10).Ticks,
+                endTimeTicks: 0,
+                preserveTimestamps: true);
+
+            Assert.Equal(2, track.TrackEvents.Count);
+            Assert.Equal("2", track.TrackEvents[0].Id);
+            Assert.Equal("3", track.TrackEvents[1].Id);
+        }
+    }
+}
diff --git a/tests/Jellyfin.MediaEncoding.Tests/Test Data/Probing/video_web_like_mkv_with_subtitle.json b/tests/Jellyfin.MediaEncoding.Tests/Test Data/Probing/video_web_like_mkv_with_subtitle.json
new file mode 100644
index 0000000000..4f52dd90dc
--- /dev/null
+++ b/tests/Jellyfin.MediaEncoding.Tests/Test Data/Probing/video_web_like_mkv_with_subtitle.json
@@ -0,0 +1,137 @@
+{
+    "streams": [
+        {
+            "index": 0,
+            "codec_name": "vp8",
+            "codec_long_name": "On2 VP8",
+            "profile": "1",
+            "codec_type": "video",
+            "codec_tag_string": "[0][0][0][0]",
+            "codec_tag": "0x0000",
+            "width": 540,
+            "height": 360,
+            "coded_width": 540,
+            "coded_height": 360,
+            "closed_captions": 0,
+            "film_grain": 0,
+            "has_b_frames": 0,
+            "sample_aspect_ratio": "1:1",
+            "display_aspect_ratio": "3:2",
+            "pix_fmt": "yuv420p",
+            "level": -99,
+            "field_order": "progressive",
+            "refs": 1,
+            "r_frame_rate": "2997/125",
+            "avg_frame_rate": "2997/125",
+            "time_base": "1/1000",
+            "start_pts": 0,
+            "start_time": "0.000000",
+            "disposition": {
+                "default": 1,
+                "dub": 0,
+                "original": 0,
+                "comment": 0,
+                "lyrics": 0,
+                "karaoke": 0,
+                "forced": 0,
+                "hearing_impaired": 0,
+                "visual_impaired": 0,
+                "clean_effects": 0,
+                "attached_pic": 0,
+                "timed_thumbnails": 0,
+                "captions": 0,
+                "descriptions": 0,
+                "metadata": 0,
+                "dependent": 0,
+                "still_image": 0
+            },
+            "tags": {
+                "language": "eng"
+            }
+        },
+        {
+            "index": 1,
+            "codec_name": "vorbis",
+            "codec_long_name": "Vorbis",
+            "codec_type": "audio",
+            "codec_tag_string": "[0][0][0][0]",
+            "codec_tag": "0x0000",
+            "sample_fmt": "fltp",
+            "sample_rate": "44100",
+            "channels": 2,
+            "channel_layout": "stereo",
+            "bits_per_sample": 0,
+            "r_frame_rate": "0/0",
+            "avg_frame_rate": "0/0",
+            "time_base": "1/1000",
+            "start_pts": 0,
+            "start_time": "0.000000",
+            "duration": "117.707000",
+            "bit_rate": "127998",
+            "disposition": {
+                "default": 1,
+                "dub": 0,
+                "original": 0,
+                "comment": 0,
+                "lyrics": 0,
+                "karaoke": 0,
+                "forced": 0,
+                "hearing_impaired": 0,
+                "visual_impaired": 0,
+                "clean_effects": 0,
+                "attached_pic": 0,
+                "timed_thumbnails": 0,
+                "captions": 0,
+                "descriptions": 0,
+                "metadata": 0,
+                "dependent": 0,
+                "still_image": 0
+            },
+            "tags": {
+                "language": "eng"
+            }
+        },
+        {
+            "index": 2,
+            "codec_name": "subrip",
+            "codec_long_name": "SubRip subtitle",
+            "codec_type": "subtitle",
+            "codec_tag_string": "[0][0][0][0]",
+            "codec_tag": "0x0000",
+            "disposition": {
+                "default": 0,
+                "dub": 0,
+                "original": 0,
+                "comment": 0,
+                "lyrics": 0,
+                "karaoke": 0,
+                "forced": 0,
+                "hearing_impaired": 0,
+                "visual_impaired": 0,
+                "clean_effects": 0,
+                "attached_pic": 0,
+                "timed_thumbnails": 0,
+                "captions": 0,
+                "descriptions": 0,
+                "metadata": 0,
+                "dependent": 0,
+                "still_image": 0
+            },
+            "tags": {
+                "language": "eng"
+            }
+        }
+    ],
+    "format": {
+        "filename": "sample.mkv",
+        "nb_streams": 3,
+        "nb_programs": 0,
+        "format_name": "matroska,webm",
+        "format_long_name": "Matroska / WebM",
+        "start_time": "0.000000",
+        "duration": "117.700914",
+        "size": "8566268",
+        "bit_rate": "582239",
+        "probe_score": 100
+    }
+}