convert2mp4: add 2 pass support

Signed-off-by: Florian Pritz <bluewind@xssn.at>

1 files changed, 25 insertions, 17 deletions

diff --git a/convert2mp4 b/convert2mp4
index 9035572..90bf736 100755
--- a/convert2mp4
+++ b/convert2mp4
@@ -67,23 +67,31 @@ def main():
         p1 = subprocess.Popen(["echo", "-n", name], stdout=subprocess.PIPE)
         p2 = subprocess.Popen(["sed", "s/\(.*\)\..*/\\1/"], stdin=p1.stdout, stdout=subprocess.PIPE)
         name_mp4 = p2.communicate()[0] + ".mp4"
-        subprocess.Popen(merge(
-            [["ffmpeg", "-i", name,
-            "-vcodec", "libx264",
-#            "-r", "25",
-#            "-g", "250", "-keyint_min", "25",
-            "-vpre", "hq",
-#            "-coder", "ac", "-me_range", "16",
-#            "-subq", "5", "-sc_threshold", "40",
-            "-acodec", "libfaac",
-#            "-ar", "44100",
-#            "-cmp", "+chroma", "-partitions", "+parti4x4+partp8x8+partb8x8",
-#            "-i_qfactor", "0.71", "-b_strategy", "1",
-            "-threads", "0",
-#            "-crf", "30",
-            "-y"],
-            ffmpeg_args, [name_mp4]]
-            )).communicate()[0]
+        for encpass in ["1", "2"]:
+            if encpass == "1":
+                filename = "/dev/null"
+            else:
+                filename = name_mp4
+            subprocess.Popen(merge(
+                [["ffmpeg", "-i", name,
+                "-vcodec", "libx264",
+#               "-r", "25",
+#               "-g", "250", "-keyint_min", "25",
+                "-vpre", "hq",
+#               "-coder", "ac", "-me_range", "16",
+#               "-subq", "5", "-sc_threshold", "40",
+                "-acodec", "libfaac",
+#               "-ar", "44100",
+#               "-cmp", "+chroma", "-partitions", "+parti4x4+partp8x8+partb8x8",
+#               "-i_qfactor", "0.71", "-b_strategy", "1",
+                "-threads", "0",
+                "-pass", encpass,
+                "-f", "mp4",
+#               "-crf", "30",
+                "-y"],
+                ffmpeg_args, [filename]]
+                )).communicate()[0]
+
         subprocess.Popen(["qt-faststart", name_mp4, "done_"+name_mp4]).communicate()[0]
 
 def merge(seq):