noreply at mythtv
Oct 1, 2011, 3:01 PM
Post #1 of 18
(174 views)
Permalink
|
|
Ticket #10071: Bugfixes to mythburn.py
|
|
#10071: Bugfixes to mythburn.py
--------------------------------------+-------------------------
Reporter: t.brackertz@… | Owner: paulh
Type: Patch - Bug Fix | Status: new
Priority: minor | Milestone: 0.25
Component: Plugin - MythArchive | Version: Unspecified
Severity: medium | Keywords:
Ticket locked: 0 |
--------------------------------------+-------------------------
A lot of fixes to mythburn.py No other files affected.
The path-file applies to the recent (2011-10-01) git-clone but changes can
easily be backported to 0.25 branch.
See below for a detailed description of the issues and the fixes:
----------------------
----------------------
typos
-----
some irrelevant ones
Medium handling:
----------------
former issues:
- no possibility to cancel process
- one has to be fast enough feeding the device, otherwise the process
cancels
- some devices need more time to close the tray. They get hard-resetted
all the time. No chance to burn a disk, if it is not put in before the
script is started
- if you use a disk of wrong type you don't get a chance to put in a
correct one. The whole process cancels
changes in BurnDVDISO()
Integration of project-x
------------------------
until now:
After the run of project-x its logfile is parsed (in
renameProjectXFiles()) to find out the filenames of the files produced by
project-x and to associate them to the streams
issues:
- not very reliable: in many constellations (e.g. recoded .flv-videos) the
logfile doesn't fit the expectations. Although there is a fallback
mechanism in many cases the script crashes while parsing before reaching
the fallback
- the format of the logfile seems to change often if there is a new
version of project-x. The parser has to be renewd all the time. (the
recent one works for project-x 0.91 but not for older ones)
solution:
- An 0.91 project-x learned a new command line option (-set
ExternPanel.appendPidToFileName=1) which causes project-x to use filenames
for the output containing the PIDs and SubPIDs in a predictable manner.
This should work with upcoming versions, too.
- Therefore no more parsing is necessary.
- Nevertheless there is still a fallback mechanism as in some cases (e.g.
recoded mggs) mytharchivehelper gives strange IDs which makes it
impossible to find the wanted files by ID
- As the current parser relies on project-x 0.91 as well there is no
regression by the fact that at least version 0.91 is necessary now. (The
version dependency at the beginning of the sript claiming for project-x
0.90.4 was outdated anyway.)
changes in runProjectX(), renameProjectXFiles() is obsolete now
Divide-by-zero-error if requantising
--------------------------------------
see:
http://code.mythtv.org/trac/ticket/8598#comment:2
issue:
If M2VRequantiser fails for some reason (probably it is not installed) the
script crashes with a missleading error message.
reason:
The exit-code of M2VRequantiser is evaluated too late: After then run the
size of the produced file is evaluated which gives a divide-by-zero-error.
The exit-code of M2VRequantiser is evaluated thereafter, which means never
because the script crashes before.
solution:
change the order
changes in runM2VRequantiser
Misleading log-entry
--------------------
issue:
The log-entry produced by getStreamInformation() sometimes mentions the
wrong file as the filename is hard-coded
solution:
use the appropriate variable
changes in getStreamInformation()
Inconsistent string-handling in the whole script
------------------------------------------------
issue:
many errors and crashs when sript is used with recordings having special
characters in their title or videos with special chars in the filename.
reason:
One part of the strings is unicode (mainly coming from parsing the xml-
files), another part is utf-8-encoded (mainly coming from database). They
get mixed up and / or get printed to logfile or console unencoded or
double-encoded. This results in many errors.
solution:
Consequently use unicode-strings:
- make the database-object use unicode-strings in getDatabaseConnection()
- encode strings to utf-8 before printing to logfile or console in write()
and runCommand()
- remove all encode- and decode-statements in the rest of the script
- quote all commandline arguments properly
Endless growing work-directory
------------------------------
issue:
In some rare cases in which many DVDs with many small and one big title
are created the work-directory theoreticallly grows endless
reason:
Before a new file is written to disk the old file with the same name is
deleted but the rest is not.
Imagine the following situation:
Create a DL-disc with 20 titles, all very small, only the last one having
8GB. You get 20 subdirs in the work-directory of which the "20"-directory
is very big. All together they have 9GB.
Next step: The same as before but with only 19 titles. Result: Only the
first 19 dirs of the last run get deleted, the big "20"-dir stays. But
there is a new big "19"-dir. All together they have ~17GB
An so on. You end up with a work directory containing at least 160GB
solution:
delete everything in the "work"-dir at the beginning instead of
incrementally deletion. Also shortens the code.
new deleteEverythingInFolder()-function and changes at some other places
--
Ticket URL: <http://code.mythtv.org/trac/ticket/10071>
MythTV <http://code.mythtv.org/trac>
MythTV Media Center
_______________________________________________
mythtv-commits mailing list
mythtv-commits [at] mythtv
http://www.mythtv.org/mailman/listinfo/mythtv-commits
|
