use file for large edits

ffmpeg.py

@@ -5,8 +5,8 @@ import subprocess
 import sys
 
 def run(cmd):
-    print(' '.join('"%s"' % c for c in cmd))
-    #subprocess.call(cmd)
+    #print(' '.join('"%s"' % c for c in cmd))
+    subprocess.call(cmd)
 
 
 edit_json = sys.argv[1]
@@ -18,10 +18,12 @@ height = 270
 aspect = 16/9
 width = int(height * aspect)
 
-n = 0
 files = []
 for clip in edit:
-    out = render + '/%06d.ts' % n
+    out = render + '/%s_%0.3f-%0.3f.ts' % (clip['oshash'], clip['in'], clip['out'])
+    files.append(out)
+    if os.path.exists(out):
+        continue
     clip_aspect = clip['resolution'][0] / clip['resolution'][1]
     if clip_aspect < aspect:
         x = width
@@ -37,7 +39,7 @@ for clip in edit:
         vf += ',crop=w=%s:h=%s:x=0:y=%s' % (width, height, offset)
     options = [
         '-vf', vf,
-        '-aspect', aspect,
+        '-aspect', str(aspect),
         '-c:v', 'libx264',
         '-b:v', '8M',
         '-r:v', '25',
@@ -54,10 +56,11 @@ for clip in edit:
         '-t', str(clip['out'] - clip['in']),
         out
     ]
-    files.append(out)
     run(cmd)
-    n += 1
 
-files = '|'.join(files)
-cmd = ['ffmpeg', '-y', '-i', 'concat:' + files, '-c', 'copy', output]
+txt = output + '.txt'
+with open(txt, 'w') as fd:
+    fd.write('file ' + '\nfile '.join(files))
+cmd = ['ffmpeg', '-y', '-f', 'concat', '-safe', '0', '-i', txt, '-c', 'copy', output]
 run(cmd)
+os.unlink(txt)