Opened 20 years ago

Closed 20 years ago

#668 closed enhancement (fixed)

Support for ATSC Closed Captions

Reported by: gtgj@… Owned by: danielk
Priority: minor Milestone: 0.20
Component: mythtv Version: head
Severity: medium Keywords:
Cc: Ticket locked: no

Description

This patch adds support for decoding Closed Captions in ATSC mpeg streams. These are the "old-style" EIA-608 captions which seem to be present in most ATSC broadcasts. This patch also includes decoding of Closed Captions (not subtitles) in DVD mpeg streams. Both caption-styles are contained in User Data mpeg packets. For the captions to be correctly displayed, the patch in Ticket #667 is required.

The patch is in two parts. The first part moves the existing CC decoding support from NuppelVideoRecorder to a new CCDecoder class so that it can be shared with the frontend. The second part adds the actual support for ATSC and DVD decoding.

Attachments (2)

ccdecoder-r7892.patch​ (49.9 KB ) - added by gtgj@… 20 years ago.
atsc_cc-r7892.patch​ (12.3 KB ) - added by gtgj@… 20 years ago.
ATSC/DVD CC support (dependent on ccdecoder patch)

Download all attachments as: .zip

Change History (5)

by gtgj@…, 20 years ago

Attachment: ccdecoder-r7892.patch​ added

by gtgj@…, 20 years ago

Attachment: atsc_cc-r7892.patch​ added

ATSC/DVD CC support (dependent on ccdecoder patch)

comment:1 by anonymous, 20 years ago

Milestone: → 0.20
Owner: changed from Isaac Richards to danielk
Version: → head

comment:2 by danielk, 20 years ago

(In [7988]) References #668. Applies ccdecoder patch.

Breaks out portions of caption decoder from cc and NVP so that it can be used by a followup patch.

If you are using VBI CC/teletext pleae test where you are to see if this breaks anything.

comment:3 by danielk, 20 years ago

Resolution: → fixed
Status: new → closed

(In [7989]) Closes #668.

Adds support for EIA-608 captions in ATSC/DVB streams.

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