Opened 18 years ago

Closed 18 years ago

#361 closed patch (fixed)

Improved discrimination and channel-name maintenance in MPEG & ATSC channel scans

Reported by: Paul Milazzo <pgm0203@…> Owned by: danielk
Priority: minor Milestone: 0.19
Component: mythtv Version: head
Severity: medium Keywords:
Cc: Ticket locked: no


The following patch makes several small improvements to the channel-scanning process for ATSC and MPEG-only (no SI data) scans:

  • Allow callsign and service name to differ.
  • For transports without inband SI data (e.g. many US cable-TV providers):
    • Avoid adding channels for which at least one of the following is true:
      1. We cannot find the PMT.
      2. We want FTA channels only, but the channel appears to be encrypted.
      3. The video stream contains the still-picture flag (e.g. it's a Music Choice(R) channel); Myth currently does not play these streams correctly.
    • Don't overwrite known callsign and service name when updating an existing channel. In the absense of SI data this information must have been entered by hand and should not be overwritten by subsequent scans.
  • For transports with ATSC PSIP data:
    • If the VCT entry for a given channel includes an Extended Channel Name Descriptor, use the Extended Channel Name as the service name rather than duplicating the callsign. Otherwise use the Short Channel Name (which is used as the callsign) as was done before.

Attachments (1)

mpegscan.diff (16.6 KB) - added by Paul Milazzo <pgm0203@…> 18 years ago.
Oops; forgot to attach the patch file.

Download all attachments as: .zip

Change History (2)

Changed 18 years ago by Paul Milazzo <pgm0203@…>

Attachment: mpegscan.diff added

Oops; forgot to attach the patch file.

comment:1 Changed 18 years ago by danielk

Resolution: fixed
Status: newclosed

(In [7290]) Closes #361.

Contribution from Paul Milazzo.

This grabs the extended name for ATSC channels when it available, and changes the "Cable" scan so that it checks for encryption and "Still Picture" services.

See the ticket for more details.

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