[mythtv-users] mythburn.py with cutlist: ERR: Cannot jump to chapter 7 of title 1, only 6 exist

[Will Dormann]

On 3/5/14, 11:08 AM, Will Dormann wrote:
> On 3/5/14, 10:42 AM, Will Dormann wrote:
>> getLengthOfVideo() is parsing streaminfo.xml to determine the video
>> length, and streaminfo.xml does not reflect the post-cut size:
>> <file duration="21" cutduration="21" type="mpeg"
>> filename="/var/lib/mytharchive/temp/work/1/newfile2.mpg">
> 
> Or more specifically, the "cutduration" property gets lost by the time
> it makes it to newfile2.mpg:


Attached is a patch made against mythburn.py with the last patch I
posted
<http://www.mythtv.org/pipermail/mythtv-users/2014-March/361359.html>
applied.

If the filename is "newfile2.mpg", the length of the video is obtained
via streaminfo_orig.xml instead of streaminfo.xml.  This way, size
difference applied by the cutting is enabled.


-WD

-------------- next part --------------
--- mythburn.py.mythtranscode	2014-03-03 22:29:43.772490696 -0500
+++ mythburn.py	2014-03-05 15:35:51.395730418 -0500
@@ -605,6 +605,26 @@
         duration = 0;
 
     return duration
+  
+#############################################################
+# Gets the duration of a video file from its stream info file
+
+def getOrigLengthOfVideo(index):
+    """Returns the length of a video file (in seconds)"""
+
+    #open the XML containing information about this file
+    infoDOM = xml.dom.minidom.parse(os.path.join(getItemTempPath(index), 'streaminfo_orig.xml'))
+
+    #error out if its the wrong XML
+    if infoDOM.documentElement.tagName != "file":
+        fatalError("Stream info file doesn't look right (%s)" % os.path.join(getItemTempPath(index), 'streaminfo_orig.xml'))
+    file = infoDOM.getElementsByTagName("file")[0]
+    if file.attributes["cutduration"].value != 'N/A':
+        duration = int(file.attributes["cutduration"].value)
+    else:
+        duration = 0;
+
+    return duration
 
 #############################################################
 # Gets the audio sample rate and number of channels of a video file 
@@ -1698,6 +1718,16 @@
 
     # print out the streaminfo.xml file to the log
     infoDOM = xml.dom.minidom.parse(xmlFilename)
+    if os.path.basename(filename) == "newfile2.mpg":
+        # This is a newly-written video file, and mytharchivehelper isn't going to find the cutlist
+        write("Obtaining cutlist details from original recording")
+        index = int(os.path.split(os.path.dirname(filename))[-1])
+        cutduration = str(getOrigLengthOfVideo(index))
+        write("Cut duration: %s" % cutduration)
+        file = infoDOM.getElementsByTagName("file")[0]
+        file.attributes['cutduration'].value = cutduration
+        WriteXMLToFile (infoDOM, xmlFilename)
+        
     write(xmlFilename + ":-\n" + infoDOM.toprettyxml("    ", ""), False)
 
 #############################################################