From 0de8b99c025e3ac690b064eddd95bd018f3f1d3f Mon Sep 17 00:00:00 2001
From: Leo Vasanko <leo@git>
Date: Thu, 14 Aug 2025 15:41:15 -0700
Subject: [PATCH] Try to leak less memory.

---
 cista/preview.py | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/cista/preview.py b/cista/preview.py
index bc65f2a..d8de724 100644
--- a/cista/preview.py
+++ b/cista/preview.py
@@ -99,14 +99,15 @@ def process_pdf(path, *, maxsize, maxzoom, quality, page_number=0):
 def process_video(path, *, maxsize, quality):
     frame = None
     imgdata = io.BytesIO()
+    istream = ostream = icontainer = ocontainer = icc = occ = frame = None
     with (
-        av.open(str(path)) as container,
+        av.open(str(path)) as icontainer,
         av.open(imgdata, "w", format="avif") as ocontainer,
     ):
-        istream = container.streams.video[0]
+        istream = icontainer.streams.video[0]
         istream.codec_context.skip_frame = "NONKEY"
-        container.seek((container.duration or 0) // 8)
-        for frame in container.decode(istream):
+        icontainer.seek((icontainer.duration or 0) // 8)
+        for frame in icontainer.decode(istream):
             if frame.dts is not None:
                 break
         else:
@@ -136,6 +137,6 @@ def process_video(path, *, maxsize, quality):
         ocontainer.mux(ostream.encode(None))  # Flush the stream
 
     ret = imgdata.getvalue()
-    del imgdata
+    del imgdata, istream, ostream, icc, occ, frame
     gc.collect()
     return ret