Mailing List Archive: MythTV: Users

UK subtitles

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davidcrawford83 at gmail

Feb 24, 2012, 12:40 PM

Post #1 of 16 (783 views)
Permalink

UK subtitles

Hi,

I am currenty recording TV programs with MythTV in the UK and then
extracting subtitle files into text documents.

For some reason though not all the recordings contain the subtitle stream.
Sometimes it will work on and then sometimes not (on the same channel that
contains subtitle streams). Teletext subtitles are carried on 888 in the UK
I believe.

Do I have to change a setting somewhere for this to work all the time?

Cheers

richard.e.morton at gmail

Feb 24, 2012, 12:48 PM

Post #2 of 16 (768 views)
Permalink

Re: UK subtitles [In reply to]

888 was the teletext page number that the subtitles were on.
Now they are simply an one of the components of the MPEG transport stream;
therefore the subtitles are in the MPEG file (why are you extracting them I
am curious - I dont understand why people would want to extract subtitles
except for niche reasons search as searching spoken text in audio mining
applications for research purposes and tv show production).

as for why they are not being extracted; are you sure that the recording
has subtitles, not all shows have subtitles. Try playing the program back
and seeing if subtitles are available you can do this in VLC or with
Mythfrontend.

How are you extracting the subtitles; using a script? what script?

R

raymond at wagnerrp

Feb 24, 2012, 12:54 PM

Post #3 of 16 (768 views)
Permalink

Re: UK subtitles [In reply to]

On 2/24/2012 15:48, Richard Morton wrote:
> How are you extracting the subtitles; using a script? what script?

See mythccextractor in 0.25. It uses the same libraries as
mythfrontend, so if you can view the subtitles in mythfrontend, you can
extract them with mythccextractor.
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mythtv-users [at] mythtv
http://www.mythtv.org/mailman/listinfo/mythtv-users

davidcrawford83 at gmail

Feb 24, 2012, 1:07 PM

Post #4 of 16 (767 views)
Permalink

Re: UK subtitles [In reply to]

Searching the subtitles for a project im doing.

The programs and shows definately have subtitles normally. For example if I
record sky news 1 showing of news after the other, sometimes only one has
the subtitles in the MPEG stream.

I know that they havent been recorded as they would be there if you try
extracting with apps such as ProjectX for example.

It seems sometimes it will record the PID containing the subs and other
times no.

Any other ideas as to why?

On 24 February 2012 20:54, Raymond Wagner <raymond [at] wagnerrp> wrote:

> On 2/24/2012 15:48, Richard Morton wrote:
> > How are you extracting the subtitles; using a script? what script?
>
> See mythccextractor in 0.25. It uses the same libraries as
> mythfrontend, so if you can view the subtitles in mythfrontend, you can
> extract them with mythccextractor.
> _______________________________________________
> mythtv-users mailing list
> mythtv-users [at] mythtv
> http://www.mythtv.org/mailman/listinfo/mythtv-users
>

raymond at wagnerrp

Feb 24, 2012, 1:28 PM

Post #5 of 16 (768 views)
Permalink

Re: UK subtitles [In reply to]

On 2/24/2012 16:07, David Crawford wrote:
> On 24 February 2012 20:54, Raymond Wagner <raymond [at] wagnerrp
> <mailto:raymond [at] wagnerrp>> wrote:
>
> On 2/24/2012 15:48, Richard Morton wrote:
> > How are you extracting the subtitles; using a script? what script?
>
> See mythccextractor in 0.25. It uses the same libraries as
> mythfrontend, so if you can view the subtitles in mythfrontend,
> you can
> extract them with mythccextractor.
>
>
> I know that they havent been recorded as they would be there if you
> try extracting with apps such as ProjectX for example.
>
>
> It seems sometimes it will record the PID containing the subs and
> other times no.

Is it possible the subtitles are simply being sent in a manner Project-X
cannot handle? Maybe it can do DVB subtitles, but not MHEG ones.

davidcrawford83 at gmail

Feb 24, 2012, 1:35 PM

Post #6 of 16 (770 views)
Permalink

Re: UK subtitles [In reply to]

On 24 February 2012 21:28, Raymond Wagner <raymond [at] wagnerrp> wrote:

> On 2/24/2012 16:07, David Crawford wrote:
>
> On 24 February 2012 20:54, Raymond Wagner <raymond [at] wagnerrp> wrote:
>
>> On 2/24/2012 15:48, Richard Morton wrote:
>> > How are you extracting the subtitles; using a script? what script?
>>
>> See mythccextractor in 0.25. It uses the same libraries as
>> mythfrontend, so if you can view the subtitles in mythfrontend, you can
>> extract them with mythccextractor.
>>
>
> I know that they havent been recorded as they would be there if you try
> extracting with apps such as ProjectX for example.
>
>
> It seems sometimes it will record the PID containing the subs and other
> times no.
>
>
> Is it possible the subtitles are simply being sent in a manner Project-X
> cannot handle? Maybe it can do DVB subtitles, but not MHEG ones.
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users [at] mythtv
> http://www.mythtv.org/mailman/listinfo/mythtv-users
>
>
The thing is it's not working on programs that it should be working. For
example on Sky news its working on hardly any recordings. This has only
happened for me since switching to linux and dvbviewer.

I have seen a similar problem a while back in dvbviewer where they werent
being captured, the problem turned out to be that the PID for the subtitles
was wrong, it was set to teletext for interactive services or somethig like
that. It was easy to solve this by just changing the PID's manually.

How do you do that in Myth?

Thanks for the info

davidcrawford83 at gmail

Feb 24, 2012, 1:37 PM

Post #7 of 16 (768 views)
Permalink

Re: UK subtitles [In reply to]

On 24 February 2012 21:35, David Crawford <davidcrawford83 [at] gmail> wrote:

>
>
> On 24 February 2012 21:28, Raymond Wagner <raymond [at] wagnerrp> wrote:
>
>> On 2/24/2012 16:07, David Crawford wrote:
>>
>> On 24 February 2012 20:54, Raymond Wagner <raymond [at] wagnerrp> wrote:
>>
>>> On 2/24/2012 15:48, Richard Morton wrote:
>>> > How are you extracting the subtitles; using a script? what script?
>>>
>>> See mythccextractor in 0.25. It uses the same libraries as
>>> mythfrontend, so if you can view the subtitles in mythfrontend, you can
>>> extract them with mythccextractor.
>>>
>>
>> I know that they havent been recorded as they would be there if you try
>> extracting with apps such as ProjectX for example.
>>
>>
>> It seems sometimes it will record the PID containing the subs and other
>> times no.
>>
>>
>> Is it possible the subtitles are simply being sent in a manner Project-X
>> cannot handle? Maybe it can do DVB subtitles, but not MHEG ones.
>>
>> _______________________________________________
>> mythtv-users mailing list
>> mythtv-users [at] mythtv
>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>>
>>
> The thing is it's not working on programs that it should be working. For
> example on Sky news its working on hardly any recordings. This has only
> happened for me since switching to linux and dvbviewer.
>
> I have seen a similar problem a while back in dvbviewer where they werent
> being captured, the problem turned out to be that the PID for the subtitles
> was wrong, it was set to teletext for interactive services or somethig like
> that. It was easy to solve this by just changing the PID's manually.
>
> How do you do that in Myth?
>
> Thanks for the info
>

I mean only started happening since switcing to linux and mythtv :S

davidcrawford83 at gmail

Feb 24, 2012, 1:53 PM

Post #8 of 16 (767 views)
Permalink

Re: UK subtitles [In reply to]

On 24 February 2012 21:37, David Crawford <davidcrawford83 [at] gmail> wrote:

>
>
> On 24 February 2012 21:35, David Crawford <davidcrawford83 [at] gmail>wrote:
>
>>
>>
>> On 24 February 2012 21:28, Raymond Wagner <raymond [at] wagnerrp> wrote:
>>
>>> On 2/24/2012 16:07, David Crawford wrote:
>>>
>>> On 24 February 2012 20:54, Raymond Wagner <raymond [at] wagnerrp> wrote:
>>>
>>>> On 2/24/2012 15:48, Richard Morton wrote:
>>>> > How are you extracting the subtitles; using a script? what script?
>>>>
>>>> See mythccextractor in 0.25. It uses the same libraries as
>>>> mythfrontend, so if you can view the subtitles in mythfrontend, you can
>>>> extract them with mythccextractor.
>>>>
>>>
>>> I know that they havent been recorded as they would be there if you try
>>> extracting with apps such as ProjectX for example.
>>>
>>>
>>> It seems sometimes it will record the PID containing the subs and other
>>> times no.
>>>
>>>
>>> Is it possible the subtitles are simply being sent in a manner Project-X
>>> cannot handle? Maybe it can do DVB subtitles, but not MHEG ones.
>>>
>>> _______________________________________________
>>> mythtv-users mailing list
>>> mythtv-users [at] mythtv
>>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>>>
>>>
>> The thing is it's not working on programs that it should be working. For
>> example on Sky news its working on hardly any recordings. This has only
>> happened for me since switching to linux and dvbviewer.
>>
>> I have seen a similar problem a while back in dvbviewer where they werent
>> being captured, the problem turned out to be that the PID for the subtitles
>> was wrong, it was set to teletext for interactive services or somethig like
>> that. It was easy to solve this by just changing the PID's manually.
>>
>> How do you do that in Myth?
>>
>> Thanks for the info
>>
>
> I mean only started happening since switcing to linux and mythtv :S
>

BTW, just realised that it will always record the subtitles sucessfully if
I do a "manual" record.
Why should it be different recording manually than doing it through the
guide/search? Or is this just a coincidence?

J.Pilk at tesco

Feb 24, 2012, 1:54 PM

Post #9 of 16 (773 views)
Permalink

Re: UK subtitles [In reply to]

On 24/02/12 21:37, David Crawford wrote:
>
>
> On 24 February 2012 21:35, David Crawford <davidcrawford83 [at] gmail
> <mailto:davidcrawford83 [at] gmail>> wrote:
>
>
>
> On 24 February 2012 21:28, Raymond Wagner <raymond [at] wagnerrp
> <mailto:raymond [at] wagnerrp>> wrote:
>
> On 2/24/2012 16:07, David Crawford wrote:
>> On 24 February 2012 20:54, Raymond Wagner
>> <raymond [at] wagnerrp <mailto:raymond [at] wagnerrp>> wrote:
>>
>> On 2/24/2012 15:48, Richard Morton wrote:
>> > How are you extracting the subtitles; using a script?
>> what script?
>>
>> See mythccextractor in 0.25. It uses the same libraries as
>> mythfrontend, so if you can view the subtitles in
>> mythfrontend, you can
>> extract them with mythccextractor.
>>
>>
>> I know that they havent been recorded as they would be there
>> if you try extracting with apps such as ProjectX for example.
>>
>>
>> It seems sometimes it will record the PID containing the subs
>> and other times no.
>
> Is it possible the subtitles are simply being sent in a manner
> Project-X cannot handle? Maybe it can do DVB subtitles, but not
> MHEG ones.
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users [at] mythtv <mailto:mythtv-users [at] mythtv>
> http://www.mythtv.org/mailman/listinfo/mythtv-users
>
>
> The thing is it's not working on programs that it should be working.
> For example on Sky news its working on hardly any recordings. This
> has only happened for me since switching to linux and dvbviewer.
>
> I have seen a similar problem a while back in dvbviewer where they
> werent being captured, the problem turned out to be that the PID for
> the subtitles was wrong, it was set to teletext for interactive
> services or somethig like that. It was easy to solve this by just
> changing the PID's manually.
>
> How do you do that in Myth?
>
> Thanks for the info
>
> I mean only started happening since switcing to linux and mythtv :S
>

I don't know if this is relevant, but ffmpeg -i used to report

Stream #0.3[0x25d](eng): Subtitle: dvbsub

and now it gives - obviously this isn't the same channel -

Stream #0:3[0x69](eng): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)

I'm not yet sure when the change occurred but think it's quite recent.
Seems unlikely to explain a difference in recordings taken at similar times.

John P

_______________________________________________
mythtv-users mailing list
mythtv-users [at] mythtv
http://www.mythtv.org/mailman/listinfo/mythtv-users

raymond at wagnerrp

Feb 24, 2012, 2:01 PM

Post #10 of 16 (777 views)
Permalink

Re: UK subtitles [In reply to]

On 2/24/2012 16:35, David Crawford wrote:
>
>
> On 24 February 2012 21:28, Raymond Wagner <raymond [at] wagnerrp
> <mailto:raymond [at] wagnerrp>> wrote:
>
> On 2/24/2012 16:07, David Crawford wrote:
>> On 24 February 2012 20:54, Raymond Wagner <raymond [at] wagnerrp
>> <mailto:raymond [at] wagnerrp>> wrote:
>>
>> On 2/24/2012 15:48, Richard Morton wrote:
>> > How are you extracting the subtitles; using a script? what
>> script?
>>
>> See mythccextractor in 0.25. It uses the same libraries as
>> mythfrontend, so if you can view the subtitles in
>> mythfrontend, you can
>> extract them with mythccextractor.
>>
>>
>> I know that they havent been recorded as they would be there if
>> you try extracting with apps such as ProjectX for example.
>>
>>
>> It seems sometimes it will record the PID containing the subs and
>> other times no.
>
> Is it possible the subtitles are simply being sent in a manner
> Project-X cannot handle? Maybe it can do DVB subtitles, but not
> MHEG ones.
>
>
> I have seen a similar problem a while back in dvbviewer where they
> werent being captured, the problem turned out to be that the PID for
> the subtitles was wrong, it was set to teletext for interactive
> services or somethig like that. It was easy to solve this by just
> changing the PID's manually.

There is an option in the Recording Profile settings in the frontend to
do further filtering of the input stream. If you have it set to 'TV
Only', change that to 'Normal'.

J.Pilk at tesco

Feb 24, 2012, 2:32 PM

Post #11 of 16 (755 views)
Permalink

Re: UK subtitles [In reply to]

On 24/02/12 21:54, John Pilkington wrote:

> I don't know if this is relevant, but ffmpeg -i used to report
>
> Stream #0.3[0x25d](eng): Subtitle: dvbsub
>
> and now it gives - obviously this isn't the same channel -
>
> Stream #0:3[0x69](eng): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
>
> I'm not yet sure when the change occurred but think it's quite recent.
> Seems unlikely to explain a difference in recordings taken at similar times.
>

Just in case it helps:

About 8 January. ffmpeg-0.9-52 package is dated 3 January 2012.

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mythtv-users [at] mythtv
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davidcrawford83 at gmail

Feb 24, 2012, 11:24 PM

Post #12 of 16 (746 views)
Permalink

Re: UK subtitles [In reply to]

On 24 February 2012 22:01, Raymond Wagner <raymond [at] wagnerrp> wrote:

> On 2/24/2012 16:35, David Crawford wrote:
>
>
>
> On 24 February 2012 21:28, Raymond Wagner <raymond [at] wagnerrp> wrote:
>
>> On 2/24/2012 16:07, David Crawford wrote:
>>
>> On 24 February 2012 20:54, Raymond Wagner <raymond [at] wagnerrp> wrote:
>>
>>> On 2/24/2012 15:48, Richard Morton wrote:
>>> > How are you extracting the subtitles; using a script? what script?
>>>
>>> See mythccextractor in 0.25. It uses the same libraries as
>>> mythfrontend, so if you can view the subtitles in mythfrontend, you can
>>> extract them with mythccextractor.
>>>
>>
>> I know that they havent been recorded as they would be there if you
>> try extracting with apps such as ProjectX for example.
>>
>>
>> It seems sometimes it will record the PID containing the subs and other
>> times no.
>>
>>
>> Is it possible the subtitles are simply being sent in a manner Project-X
>> cannot handle? Maybe it can do DVB subtitles, but not MHEG ones.
>>
>>
> I have seen a similar problem a while back in dvbviewer where they werent
> being captured, the problem turned out to be that the PID for the subtitles
> was wrong, it was set to teletext for interactive services or somethig like
> that. It was easy to solve this by just changing the PID's manually.
>
>
> There is an option in the Recording Profile settings in the frontend to do
> further filtering of the input stream. If you have it set to 'TV Only',
> change that to 'Normal'.
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users [at] mythtv
> http://www.mythtv.org/mailman/listinfo/mythtv-users
>
> Actually not using the front end really, just scheduling recordings via
mythweb. But it seems that its set to 'Normal' anyhow.

What about a particular setting in the backend? It always records the
subtitle stream when recorded via a manual schedule via mythweb. The same
show didn't record the stream when recording via the EPG.

mikep at randomtraveller

Feb 25, 2012, 3:17 AM

Post #13 of 16 (741 views)
Permalink

Re: UK subtitles [In reply to]

On 25/02/12 07:24, David Crawford wrote:
>
> Actually not using the front end really, just scheduling recordings via
> mythweb. But it seems that its set to 'Normal' anyhow.
>
Not the point. Your /recording/ happens on a backend, it's just that the menus
to set recording parameters are accessable via a front-end menu.

> What about a particular setting in the backend? It always records the
> subtitle stream when recorded via a manual schedule via mythweb. The same
> show didn't record the stream when recording via the EPG.
>
It's possible that when you do a manual recording, the default profile is
different to the one that you 'chose' (defaulted, really) when you set up your
scheduled recording.

What do you mean when you say "recording via the EPG?" A scheduled recording is
a scheduled recording, wherever you set it up from. I find that it is easier to
set all mine via mythweb, personal preferences vary. Are you just making
"one-off" recordings via different methods?

--

Mike Perkins

_______________________________________________
mythtv-users mailing list
mythtv-users [at] mythtv
http://www.mythtv.org/mailman/listinfo/mythtv-users

J.Pilk at tesco

Feb 25, 2012, 5:19 AM

Post #14 of 16 (736 views)
Permalink

Re: UK subtitles [In reply to]

On 25/02/12 11:17, Mike Perkins wrote:
> On 25/02/12 07:24, David Crawford wrote:
>>
>> Actually not using the front end really, just scheduling recordings via
>> mythweb. But it seems that its set to 'Normal' anyhow.
>>
> Not the point. Your /recording/ happens on a backend, it's just that the menus
> to set recording parameters are accessable via a front-end menu.
>
It's also possible, since it's set from the frontend, that the choice
you make there is tied to the recordings made by the backend/s for that
particular frontend, recognised by its 'hostname' - although that may
not be the preferred term now - as specified in one of the earlier
frontend setup screens. Anyway, it seems that you want to set up a
system-wide default.

>> What about a particular setting in the backend? It always records the
>> subtitle stream when recorded via a manual schedule via mythweb. The same
>> show didn't record the stream when recording via the EPG.
>>
> It's possible that when you do a manual recording, the default profile is
> different to the one that you 'chose' (defaulted, really) when you set up your
> scheduled recording.
>
> What do you mean when you say "recording via the EPG?" A scheduled recording is
> a scheduled recording, wherever you set it up from. I find that it is easier to
> set all mine via mythweb, personal preferences vary. Are you just making
> "one-off" recordings via different methods?
>

_______________________________________________
mythtv-users mailing list
mythtv-users [at] mythtv
http://www.mythtv.org/mailman/listinfo/mythtv-users

davidcrawford83 at gmail

Feb 25, 2012, 2:02 PM

Post #15 of 16 (730 views)
Permalink

Re: UK subtitles [In reply to]

On 25 February 2012 11:17, Mike Perkins <mikep [at] randomtraveller>wrote:

> On 25/02/12 07:24, David Crawford wrote:
> >
> > Actually not using the front end really, just scheduling recordings via
> > mythweb. But it seems that its set to 'Normal' anyhow.
> >
> Not the point. Your /recording/ happens on a backend, it's just that the
> menus
> to set recording parameters are accessable via a front-end menu.
>
> > What about a particular setting in the backend? It always records the
> > subtitle stream when recorded via a manual schedule via mythweb. The same
> > show didn't record the stream when recording via the EPG.
> >
> It's possible that when you do a manual recording, the default profile is
> different to the one that you 'chose' (defaulted, really) when you set up
> your
> scheduled recording.
>
> What do you mean when you say "recording via the EPG?" A scheduled
> recording is
> a scheduled recording, wherever you set it up from. I find that it is
> easier to
> set all mine via mythweb, personal preferences vary. Are you just making
> "one-off" recordings via different methods?
>
> --
>
> Mike Perkins
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users [at] mythtv
> http://www.mythtv.org/mailman/listinfo/mythtv-users
>

When i say schedule via EPG, I mean when i click on the program i want to
record and set it to record.

When i record doing a manual record i choose manual record and you can see
that in the name of the recording (the epg one has the full program name
and the manual one not, plus the manual one can be any time i want 4 mins
for example and epg one the entire show).

I don't change the recording profile from "default" to "livetv" or anything
on either occurence.

How can i check that the recording is not the same?

davidcrawford83 at gmail

Feb 25, 2012, 2:04 PM

Post #16 of 16 (738 views)
Permalink

Re: UK subtitles [In reply to]

On 25 February 2012 22:02, David Crawford <davidcrawford83 [at] gmail> wrote:

>
>
> On 25 February 2012 11:17, Mike Perkins <mikep [at] randomtraveller>wrote:
>
>> On 25/02/12 07:24, David Crawford wrote:
>> >
>> > Actually not using the front end really, just scheduling recordings via
>> > mythweb. But it seems that its set to 'Normal' anyhow.
>> >
>> Not the point. Your /recording/ happens on a backend, it's just that the
>> menus
>> to set recording parameters are accessable via a front-end menu.
>>
>> > What about a particular setting in the backend? It always records the
>> > subtitle stream when recorded via a manual schedule via mythweb. The
>> same
>> > show didn't record the stream when recording via the EPG.
>> >
>> It's possible that when you do a manual recording, the default profile is
>> different to the one that you 'chose' (defaulted, really) when you set up
>> your
>> scheduled recording.
>>
>> What do you mean when you say "recording via the EPG?" A scheduled
>> recording is
>> a scheduled recording, wherever you set it up from. I find that it is
>> easier to
>> set all mine via mythweb, personal preferences vary. Are you just making
>> "one-off" recordings via different methods?
>>
>> --
>>
>> Mike Perkins
>>
>> _______________________________________________
>> mythtv-users mailing list
>> mythtv-users [at] mythtv
>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>>
>
> When i say schedule via EPG, I mean when i click on the program i want to
> record and set it to record.
>
> When i record doing a manual record i choose manual record and you can see
> that in the name of the recording (the epg one has the full program name
> and the manual one not, plus the manual one can be any time i want 4 mins
> for example and epg one the entire show).
>
> I don't change the recording profile from "default" to "livetv" or
> anything on either occurence.
>
> How can i check that the recording is not the same?
>

I mean check if the recording profile is the same/different when i
recording using the listing info and setting up a manual record?

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