Best Way to Rescan Changed Mux Frequencies

[Lao Pan]

Now that the UK DVB-T 700Mhz clearance has started and we are all going to have to re-tune several times over the next year or two - what is the best way to rescan (in NPVR) after mux frequency changes.

I seem to remember i have previously deleted all the channels on the muxes that were changing frequency and then re-scanning with the new tuning ini and adding only the channels required. (lot of dross on UK freeview) followed by checking recurring recordings etc.

Another option which after all these years would be to export the recordings and recurring recording, delete the db and start again.

Any simpler option?

[Graham]

In theory, you don't need to do anything snazzy ... just scan (using a new .ini if a good hearted fellow has made one) ... but NextPVR does not, for example, delete obsolete channels ... I still have BBC3 in my list. Plus, the recent frequency change for BBC4 did not go well for me and I finished up with two BBC4 channels (one on the old frequency and one on the new frequency).

My plan is to delete all channels and rescan from scratch. I assume that all recurring recording records will then be invalid because the channel identifiers in the database will be wrong. My hope is that I will be able to import the file recurring-backup.xml to recreate recordings after the rescan (but I am not sure how that will work since the .xml file also contains the old channel identifiers).

Thought for the day ... I should create a recurring recording (before the rescan) for a test show that will broadcast immediately after I do the delete channels and rescan so that I can see whether recurring recordings survive the process.

[Lao Pan]

My plan is to delete all channels and rescan from scratch. I assume that all recurring recording records will then be invalid because the channel identifiers in the database will be wrong. My hope is that I will be able to import the file recurring-backup.xml to recreate recordings after the rescan (but I am not sure how that will work since the .xml file also contains the old channel identifiers).

I'm thinking:
deleting channels on just the 2 changing muxes (for Mendip TX)

Code:

11    Pick            Entertainment    ARQ A
12    Dave            Entertainment    ARQ A
17    Really            Entertainment    ARQ A
23    Create & Craft        Entertainment    ARQ A
29    E4+1            Entertainment    ARQ A
32    Sony Movie Ch        Entertainment    ARQ A
38    Quest Red        Entertainment    ARQ A
41    Food Network        Entertainment    ARQ A
43    Gems TV            Entertainment    ARQ A
46    Challenge        Entertainment    ARQ A
48    movies4men        Entertainment    ARQ A
49    TJC            Entertainment    ARQ A
60    Sony Crime Channel    Entertainment    ARQ A
65    TBN UK            Entertainment    ARQ A
72    YourTV            Entertainment    ARQ A
233    Sky News        News        ARQ A
252    Kiss Me TV        Text Services    ARQ A
253    Proud Dating        Text Services    ARQ A
673    ADULT smileTV3        Adult        ARQ A
723    talkSPORT        Radio        ARQ A
730    RNIB Connect        Radio        ARQ A
56    5USA+1            Entertainment    COM7 HD
57    5Spike+1        Entertainment    COM7 HD
64    CBS Action+1        Entertainment    COM7 HD
67    CBS Reality +1        Entertainment    COM7 HD
82    Vintage TV        Entertainment    COM7 HD
84    Quest Red+1        Entertainment    COM7 HD
87    Keep It Country        Entertainment    COM7 HD
107    BBC NEWS HD        HD        COM7 HD
108    Al Jazeera Eng HD    HD        COM7 HD
109    Channel 4+1 HD        HD        COM7 HD
110    4seven HD        HD        COM7 HD
113    RT HD            HD        COM7 HD
272    Bollywood HD        Streamed Chan    COM7 HD
733    Trans World Radio    Radio        COM7 HD

Then trying to find an appropriate series of sql queries to update the channel oid's in the database - any takers on that one?