hmm idk

patches/go-vod-sheepflix.patch

@@ -35,6 +35,64 @@ diff --git a/transcoder/handler.go b/transcoder/handler.go
  	chunk := parts[len(parts)-1]
  
  	// Check if POST request to create temp file
+@@ -133,10 +141,7 @@ func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+ 	}
+ 
+ 	// Get existing manager or create new one
+-	manager := h.getManager(path, streamid)
+-	if manager == nil {
+-		manager = h.createManager(path, streamid)
+-	}
++	manager := h.getOrCreateManager(path, streamid)
+ 
+ 	// Failed to create manager
+ 	if manager == nil {
+@@ -166,33 +172,29 @@ func (h *Handler) versionOk(w http.ResponseWriter, r *http.Request) bool {
+ 	return true
+ }
+ 
+-func (h *Handler) getManager(path string, streamid string) *Manager {
+-	h.mutex.RLock()
+-	defer h.mutex.RUnlock()
+-
+-	m := h.managers[streamid]
+-	if m == nil || m.path != path {
+-		return nil
+-	}
+-	return m
+-}
+-
+-func (h *Handler) createManager(path string, streamid string) *Manager {
++func (h *Handler) getOrCreateManager(path string, streamid string) *Manager {
++	// Lookup and creation must be atomic. Master, variant, and segment requests
++	// commonly arrive together; concurrent creators share a tempDir, and the
++	// losing manager's Destroy would delete the winner's active segment files.
++	h.mutex.Lock()
++	defer h.mutex.Unlock()
++
++	old := h.managers[streamid]
++	if old != nil && old.path == path {
++		return old
++	}
++
+ 	manager, err := NewManager(h.c, path, streamid, h.close)
+ 	if err != nil {
+ 		log.Println("Error creating manager", err)
+ 		freeIfTemp(path)
+ 		return nil
+ 	}
+ 
+-	h.mutex.Lock()
+-	defer h.mutex.Unlock()
+-
+-	old := h.managers[streamid]
+ 	if old != nil {
+ 		old.Destroy()
+ 	}
+ 
+ 	h.managers[streamid] = manager
+ 	return manager
+ }
 diff --git a/transcoder/stream.go b/transcoder/stream.go
 --- a/transcoder/stream.go
 +++ b/transcoder/stream.go