diff --git a/crates/pptx/src/read/mod.rs b/crates/pptx/src/read/mod.rs
--- a/crates/pptx/src/read/mod.rs
+++ b/crates/pptx/src/read/mod.rs
@@ -1210,6 +1210,7 @@ fn read_show(sp: &El, shows: &HashMap<String, String>) -> ShowSettings {
         without_narration: sp.bool("showNarration") == Some(false),
         without_animation: sp.bool("showAnimation") == Some(false),
         use_timings: sp.bool("useTimings").unwrap_or(true),
+        show_media_controls: sp.find("showMediaCtrls").and_then(|e| e.bool("val")).unwrap_or(true),
         ..Default::default()
     };
     if sp.child("browse").is_some() {
diff --git a/crates/pptx/src/read/timing.rs b/crates/pptx/src/read/timing.rs
--- a/crates/pptx/src/read/timing.rs
+++ b/crates/pptx/src/read/timing.rs
@@ -69,6 +69,15 @@ fn collect<'a>(e: &'a El, trigger: Option<u32>, out: &mut Vec<Found<'a>>, depth:
             && let Some(ctn) = c.child("cTn")
             && ctn.attr("nodeType") == Some("interactiveSeq")
         {
+            // Only a click starts a button sequence we can write back. A media bookmark
+            // (`onMediaBookmark`) or other start has no model: leave its effects out rather
+            // than save them as clicks on the media shape (#362).
+            let other_start =
+                ctn.child("stCondLst").is_some_and(|l| l.children_named("cond").any(|c| c.attr("evt").is_some_and(|evt| evt != "onClick")));
+            if other_start {
+                log::warn!("pptx: an animation sequence with a start other than a click was left out");
+                continue;
+            }
             trig = ctn.path(&["stCondLst", "cond", "tgtEl", "spTgt"]).and_then(|s| s.u32("spid"));
         }
         collect(c, trig, out, depth + 1);
diff --git a/crates/pptx/src/write/mod.rs b/crates/pptx/src/write/mod.rs
--- a/crates/pptx/src/write/mod.rs
+++ b/crates/pptx/src/write/mod.rs
@@ -1181,6 +1181,14 @@ fn pres_props_xml(p: &Presentation) -> Vec<u8> {
     w.open0("p:penClr");
     w.val("a:srgbClr", s.pen_color.hex());
     w.close("p:penClr");
+    if !s.show_media_controls {
+        // "Show media controls" is PowerPoint's p14 extension; absent means shown.
+        w.open0("p:extLst");
+        w.open("p:ext", A::new().a("uri", "{2FDB2607-1784-4EEB-B798-7EB5836EED8A}"));
+        w.empty("p14:showMediaCtrls", A::new().a("xmlns:p14", NS_P14).a("val", 0));
+        w.close("p:ext");
+        w.close("p:extLst");
+    }
     w.close("p:showPr");
     w.close("p:presentationPr");
     w.finish()
diff --git a/crates/pptx/tests/it/roundtrip.rs b/crates/pptx/tests/it/roundtrip.rs
--- a/crates/pptx/tests/it/roundtrip.rs
+++ b/crates/pptx/tests/it/roundtrip.rs
@@ -1925,3 +1925,12 @@ fn zoom_inserts_linked_slide_pictures() {
     assert!(s.execute("insert.zoom", &json!({"slides": [42]})).is_err());
     assert!(s.execute("insert.zoom", &json!({"kind": "slide"})).is_err());
 }
+
+/// Show media controls is PowerPoint's `p14:showMediaCtrls` extension inside `p:showPr`.
+#[test]
+fn hidden_media_controls_survive_save_and_reopen() {
+    let mut p = Presentation::default();
+    p.show.show_media_controls = false;
+    assert!(!round(&p).show.show_media_controls);
+    assert!(round(&Presentation::default()).show.show_media_controls);
+}
diff --git a/crates/pptx/tests/it/trigger_steps.rs b/crates/pptx/tests/it/trigger_steps.rs
--- a/crates/pptx/tests/it/trigger_steps.rs
+++ b/crates/pptx/tests/it/trigger_steps.rs
@@ -93,3 +93,37 @@ fn triggered_paragraph_build_keeps_a_click_for_each_paragraph() {
         assert_eq!(back.slides[0].animations[0].trigger, Some(ids[0]));
     }
 }
+
+/// A sequence that starts at a media bookmark (`onMediaBookmark`, #362) is not a click on the
+/// media shape. Reading it as one made a save turn the bookmark effects into click effects, so
+/// they are left out instead of being given the wrong trigger.
+#[test]
+fn a_media_bookmark_sequence_is_not_read_as_a_click_trigger() {
+    use std::io::Write;
+    let mut p = deck();
+    let ids: Vec<_> = p.slides[0].shapes.iter().map(|s| s.id).collect();
+    Arc::make_mut(&mut p.slides[0]).animations.push(Animation {
+        shape: ids[2],
+        trigger: Some(ids[0]),
+        effect: "appear".into(),
+        text_build: TextBuild::AsOne,
+        ..Default::default()
+    });
+    assert_eq!(round(&p).slides[0].animations.len(), 1, "a click trigger still round-trips");
+    let bytes = deckcraft_pptx::export(&p).expect("export");
+    let mut z = zip::ZipArchive::new(Cursor::new(bytes)).expect("zip");
+    let mut out = zip::ZipWriter::new(Cursor::new(Vec::new()));
+    for i in 0..z.len() {
+        let mut f = z.by_index(i).expect("entry");
+        let mut data = Vec::new();
+        f.read_to_end(&mut data).expect("read");
+        if f.name() == "ppt/slides/slide1.xml" {
+            let xml = String::from_utf8(data).expect("utf8").replace(r#"evt="onClick""#, r#"evt="onMediaBookmark""#);
+            data = xml.into_bytes();
+        }
+        out.start_file(f.name(), zip::write::SimpleFileOptions::default()).expect("start");
+        out.write_all(&data).expect("write");
+    }
+    let q = deckcraft_pptx::import(&out.finish().expect("finish").into_inner()).expect("import");
+    assert!(q.slides[0].animations.is_empty(), "{:?}", q.slides[0].animations);
+}