--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/ffmpeg/ffmpeg_hls_test.c	Mon Aug 03 13:14:41 2026 -0700
@@ -0,0 +1,82 @@
+#include "third_party/ffmpeg/ffmpeg_cli.h"
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+static char *read_file(const char *path)
+{
+  FILE *file = fopen(path, "rb");
+  if (!file)
+    return NULL;
+  fseek(file, 0, SEEK_END);
+  long length = ftell(file);
+  fseek(file, 0, SEEK_SET);
+  char *content = malloc((size_t)length + 1);
+  fread(content, 1, (size_t)length, file);
+  content[length] = '\0';
+  fclose(file);
+  return content;
+}
+
+int main(int argc, char **argv)
+{
+  assert(argc == 2);
+  char temporary[] = "/tmp/ffmpeg-hls-test-XXXXXX";
+  assert(mkdtemp(temporary));
+
+  Fmp4HlsOpts options = ffmpeg_fmp4_hls_opts_default();
+  options.max_width = 480;
+  options.max_height = 360;
+  options.video_bitrate = 350;
+  options.codec = FFMPEG_HLS_VP9_OPUS;
+  FfmpegResult result = ffmpeg_video_to_fmp4_hls(
+      argv[1],
+      temporary,
+      "test",
+      &options);
+  if (result != FFMPEG_OK)
+  {
+    fprintf(stderr, "%s\n", ffmpeg_last_error());
+    return 1;
+  }
+
+  char playlist_path[512];
+  snprintf(playlist_path, sizeof(playlist_path), "%s/test-stream.m3u8", temporary);
+  char *playlist = read_file(playlist_path);
+  assert(playlist);
+  assert(strstr(playlist, "#EXT-X-MAP:URI=\"test-init.mp4\""));
+  assert(strstr(playlist, "test-segment000.m4s"));
+  assert(strstr(playlist, "#EXT-X-ENDLIST"));
+  free(playlist);
+
+  options.codec = FFMPEG_HLS_H264_AAC;
+  options.use_mpeg_ts = true;
+  result = ffmpeg_video_to_fmp4_hls(
+      argv[1],
+      temporary,
+      "test-ts",
+      &options);
+  if (result != FFMPEG_OK)
+  {
+    fprintf(stderr, "%s\n", ffmpeg_last_error());
+    return 1;
+  }
+  snprintf(
+      playlist_path,
+      sizeof(playlist_path),
+      "%s/test-ts-stream.m3u8",
+      temporary);
+  playlist = read_file(playlist_path);
+  assert(playlist);
+  assert(!strstr(playlist, "#EXT-X-MAP"));
+  assert(strstr(playlist, "test-ts-segment000.ts"));
+  assert(strstr(playlist, "#EXT-X-ENDLIST"));
+  free(playlist);
+
+  char cleanup[640];
+  snprintf(cleanup, sizeof(cleanup), "rm -rf '%s'", temporary);
+  return system(cleanup) == 0 ? 0 : 1;
+}