diff --git a/src/main/kotlin/pw/binom/mirror/worker/convert/FileInfo.kt b/src/main/kotlin/pw/binom/mirror/worker/convert/FileInfo.kt
index 7796897..0e1d6f6 100644
--- a/src/main/kotlin/pw/binom/mirror/worker/convert/FileInfo.kt
+++ b/src/main/kotlin/pw/binom/mirror/worker/convert/FileInfo.kt
@@ -37,7 +37,7 @@ data class FileInfo(
         override val duration: Duration? = null,
         @SerialName("start_time")
         @Serializable(DurationAsSecondsString::class)
-        override val startTime: Duration?,
+        override val startTime: Duration? = null,
         override val tags: Map<String, String> = emptyMap(),
     ) : Stream
 
@@ -95,6 +95,18 @@ data class FileInfo(
             get() = tags["language"] ?: tags["lang"]
     }
 
+    @Serializable
+    @SerialName("data")
+    data class Data(
+        override val index: Int,
+        @Serializable(DurationAsSecondsString::class)
+        override val duration: Duration? = null,
+        @SerialName("start_time")
+        @Serializable(DurationAsSecondsString::class)
+        override val startTime: Duration? = null,
+        override val tags: Map<String, String> = emptyMap(),
+    ) : Stream
+
     @Serializable
     data class Format(
         @SerialName("format_name")
diff --git a/src/test/kotlin/pw/binom/mirror/worker/TestMedia.kt b/src/test/kotlin/pw/binom/mirror/worker/TestMedia.kt
index ef0012a..74917c9 100644
--- a/src/test/kotlin/pw/binom/mirror/worker/TestMedia.kt
+++ b/src/test/kotlin/pw/binom/mirror/worker/TestMedia.kt
@@ -33,6 +33,23 @@ object TestMedia {
         return out
     }
 
+    fun generateSourceWithDataStream(dir: Path, durationSeconds: Int = 2): Path {
+        val base = generateSource(dir, durationSeconds)
+        val out = dir.resolve("source-with-data.mov")
+        val command = listOf(
+            FFMPEG,
+            "-y",
+            "-i", base.toString(),
+            "-map", "0:v",
+            "-map", "0:a",
+            "-c", "copy",
+            "-timecode", "00:00:00:00",
+            out.toString(),
+        )
+        run(command)
+        return out
+    }
+
     fun generateBrokenFile(dir: Path): Path {
         Files.createDirectories(dir)
         val out = dir.resolve("broken.bin")
diff --git a/src/test/kotlin/pw/binom/mirror/worker/convert/FfprobeServiceTest.kt b/src/test/kotlin/pw/binom/mirror/worker/convert/FfprobeServiceTest.kt
index a328ed9..1e3b62e 100644
--- a/src/test/kotlin/pw/binom/mirror/worker/convert/FfprobeServiceTest.kt
+++ b/src/test/kotlin/pw/binom/mirror/worker/convert/FfprobeServiceTest.kt
@@ -43,6 +43,16 @@ class FfprobeServiceTest {
         assertTrue(audio.channels >= 1)
     }
 
+    @Test
+    fun `getInfo ignores data streams and keeps audio and video`() {
+        val source = TestMedia.generateSourceWithDataStream(tempDir)
+        val info = service().getInfo(source)
+
+        assertTrue(info.streams.any { it is FileInfo.Data })
+        assertEquals(1, info.videoStreams.size)
+        assertEquals(2, info.audioStreams.size)
+    }
+
     @Test
     fun `getInfo fails on broken file`() {
         val broken = TestMedia.generateBrokenFile(tempDir)
diff --git a/src/test/kotlin/pw/binom/mirror/worker/convert/FileInfoTest.kt b/src/test/kotlin/pw/binom/mirror/worker/convert/FileInfoTest.kt
index 4efbc70..af26728 100644
--- a/src/test/kotlin/pw/binom/mirror/worker/convert/FileInfoTest.kt
+++ b/src/test/kotlin/pw/binom/mirror/worker/convert/FileInfoTest.kt
@@ -4,6 +4,7 @@ import kotlinx.serialization.json.Json
 import kotlin.time.Duration.Companion.seconds
 import kotlin.test.Test
 import kotlin.test.assertEquals
+import kotlin.test.assertIs
 import kotlin.test.assertNotNull
 import kotlin.test.assertTrue
 
@@ -92,6 +93,91 @@ class FileInfoTest {
         assertEquals(3, info.videoStreams[0].index)
     }
 
+    @Test
+    fun `parses ffprobe json with data stream`() {
+        val fixture = """
+            {
+              "streams": [
+                {
+                  "index": 0,
+                  "codec_name": "h264",
+                  "codec_type": "video",
+                  "width": 1920,
+                  "height": 1080,
+                  "duration": "10.000000",
+                  "start_time": "0.000000",
+                  "tags": {"title": "Main"}
+                },
+                {
+                  "index": 1,
+                  "codec_name": "aac",
+                  "codec_type": "audio",
+                  "channels": 2,
+                  "channel_layout": "stereo",
+                  "duration": "10.000000",
+                  "start_time": "0.000000",
+                  "tags": {"language": "eng", "title": "English"}
+                },
+                {
+                  "index": 2,
+                  "codec_type": "data",
+                  "codec_tag_string": "tmcd",
+                  "tags": {"language": "eng", "handler_name": "SubtitleHandler"}
+                },
+                {
+                  "index": 3,
+                  "codec_name": "subrip",
+                  "codec_type": "subtitle",
+                  "start_time": "0.000000",
+                  "tags": {"language": "rus"}
+                }
+              ],
+              "format": {
+                "format_name": "matroska,webm",
+                "format_long_name": "Matroska / WebM",
+                "duration": "10.000000",
+                "size": "1000",
+                "bit_rate": "2000",
+                "tags": {"encoder": "x"}
+              }
+            }
+        """.trimIndent()
+
+        val info = json.decodeFromString(FileInfo.serializer(), fixture)
+
+        assertEquals(4, info.streams.size)
+        assertEquals(1, info.videoStreams.size)
+        assertEquals(1, info.audioStreams.size)
+        assertIs<FileInfo.VideoStream>(info.streams[0])
+        assertIs<FileInfo.AudioStream>(info.streams[1])
+        assertIs<FileInfo.Data>(info.streams[2])
+        assertIs<FileInfo.Subtitle>(info.streams[3])
+        assertEquals(1920, info.videoStreams.single().width)
+        assertEquals(2, info.audioStreams.single().channels)
+        assertEquals(10.seconds, info.format.duration)
+    }
+
+    @Test
+    fun `data stream round trip`() {
+        val info = FileInfo(
+            streams = listOf(
+                FileInfo.VideoStream(index = 0, codecName = "vp9", width = 1920, height = 1080, startTime = 0.seconds),
+                FileInfo.Data(index = 1, tags = mapOf("language" to "eng")),
+            ),
+            format = FileInfo.Format(
+                formatName = "matroska",
+                formatLongName = "M",
+                duration = 5.seconds,
+                size = 1,
+                bitRate = 1,
+            ),
+        )
+        val decoded = json.decodeFromString(FileInfo.serializer(), json.encodeToString(FileInfo.serializer(), info))
+        assertEquals(1, decoded.videoStreams.size)
+        assertEquals(0, decoded.audioStreams.size)
+        assertIs<FileInfo.Data>(decoded.streams[1])
+    }
+
     @Test
     fun `audio stream title and language fallbacks`() {
         val a1 = FileInfo.AudioStream(