feat: 压缩前后体积对比

顺便也分离文件名冲突处理逻辑

cmps_hevc_crf18.py

@@ -140,6 +140,23 @@ def make_output_path(infile: Path, outdir: Path = None, relroot: str = None):
     return outdir / rel_path
 
 
+def resolve_output(infile: Path, outfile: Path, rm_original: bool = False):
+    final_out = outfile.with_name(
+        outfile.name.replace(".hevc.mp4", ".mp4"))
+    is_path_conflict = final_out.resolve() == infile.resolve()
+    if is_path_conflict:
+        logger.warning(
+            f"Filename conflict!\n  i: {infile}\n  o: {final_out}")
+        if not rm_original:
+            logger.debug("Renaming original to avoid conflict.")
+            infile.rename(infile.with_stem(infile.stem + '.bak'))
+    logger.debug(f"Output file: {final_out}")
+    outfile.replace(final_out)
+    if rm_original and not is_path_conflict:
+        logger.debug(f"Remove original: {infile}")
+        infile.unlink()
+
+
 def parse_args():
     parser = argparse.ArgumentParser(
         prog=itsme,
@@ -185,7 +202,8 @@ def main():
         errmsg = 'No input files provided'
     if not files:
         raise SystemExit(errmsg)
-    files.sort(key=lambda x: x.stat().st_size)
+    if len(files) > 1:
+        files.sort(key=lambda x: x.stat().st_size)
 
     for idx, infile in enumerate(files, 1):
         logger.info(f"[{idx}/{len(files)}] {infile.name}")
@@ -198,21 +216,13 @@ def main():
         except (OSError, PermissionError) as e:
             logger.error(f"Job failed: {e}")
             raise
-        final_out = outfile.with_name(
-            outfile.name.replace(".hevc.mp4", ".mp4"))
-        if final_out.resolve() == infile.resolve():
-            logger.warning(
-                f"Filename conflict!\n  i: {infile}\n  o: {final_out}")
-            if not args.remove_original:
-                logger.debug("renaming original to avoid conflict.")
-                infile.rename(infile.with_stem(infile.stem + '.bak'))
-            outfile.replace(final_out)
-        else:
-            outfile.replace(final_out)
-            if args.remove_original:
-                logger.debug(f"Remove original: {infile}")
-                infile.unlink()
-        logger.debug(f"Output file: {final_out}")
+
+        isize = infile.stat().st_size / (1024 * 1024)
+        osize = outfile.stat().st_size / (1024 * 1024)
+        logger.info(f"Size deductions: {osize - isize:+.2f} MB")
+        logger.debug(f"  i: {isize:.2f} MB -> o: {osize:.2f} MB")
+
+        resolve_output(infile, outfile, args.remove_original)
 
 
 if __name__ == '__main__':