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Audio streams and DVBSBridge


SysRq

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Posted

When a S2 channel (h264) has multiple audio streams and/or DVB-subtitles, DVBSBridge doesn't receive the streams.

Only default audio and no subtitles are passed to DBVSBridge.

 

I've talked to the developers of DVBSBridge and they gave me an updated dll that helped partly (I can now change streams in Media Center).

However, the streams are empty, and they said that it's all DVBViewers fault.

 

Can you please fix this asap, cause the only reason I bought DVBViewer was to watch HDTV in MC with DVBSBridge.

Since I live in Sweden I need the subtitles on the HD channels.

Posted

Unless the dvbbridge developers do prove the problems on the DVBViewer side I don't see any reason to investigate this claim without proof or reason...

Posted
Unless the dvbbridge developers do prove the problems on the DVBViewer side I don't see any reason to investigate this claim without proof or reason...

 

They told me to record the transport stream that DVBSBridge receive from DVBViewer, so I did and sent it to them for analyze.

This is their reply:

 

"I have looked at the file that you have sent to me. It looks like DVBSBridge does not receive the transport stream packets with DVB subtitles at all from DVBViewer ;) At this point there is very little we can do as we cannot re-create these packets ourselves. I will write an e-mail to the authors of DVBViewer with this question. I also strongly suggest that you write the question at their forum as well as I cannot guarantee the answer on my question from them (especially not on short time).

 

I will keep you posted about the progress (if any).

 

Regards,

Oberon"

Posted

DVBSBridge developers are here ;)

Well, I think the name of the topic is a bit misleading as I was referring mainly to the fact that I do not see the DVB subtitles stream, coming from DVBViewer and not the audio streams. I think that audio streams are received correctly (that's what I have seen) but they are encrypted as not all CAM modules can decrypt all audio channels, but only the currently selected one.

However indeed I did not see DVB subtitles stream, coming from DVBViewer on the transport stream callback interface. Hence the question.

 

Thanks in advance.

Posted

well do you set the correct DVBSub PID? These PID and the PIDs of additional Audio streams need to be parsed from the PMT at runtime and set accordingly, otherwise nothing gets back over the callback.

 

The first test would be: Does the viewer handle this correctly? Means does it show subtitles and does the audio selection work.

 

Then you would have to see if the DVBSub are encrypted. If the CAM is as limited as it seems, this would mean the Subs are not decrypted like the other audio.

It's hard to say what does really go wrong, since I don't know the properties of the channel and I don't know the used CAM.

Posted
well do you set the correct DVBSub PID? These PID and the PIDs of additional Audio streams need to be parsed from the PMT at runtime and set accordingly, otherwise nothing gets back over the callback.

 

That's the thing! Thanks a lot Lars_MQ. For one or another reason I thought that I get the full transport stream from DVBViewer, but now indeed I realize that I setup a separate filter for every PID.

Ok, sorry for confusion and, as always, good support here.

 

P.S. Lars_MQ, have you seen my last PM to you, which I have sent a week ago?

Posted
P.S. Lars_MQ, have you seen my last PM to you, which I have sent a week ago?

Yes, I forwarded it to Christian Hackbart, because only he can decide this. I'll remind him to answer to you. ;)

Posted

Oberon: Is this something you should fix in DVBSBridge or am I doing something wrong in DVBViewer?

Posted
Oberon will fix it. ;)

 

Yes I will ;)

 

I think for further discussion we can move to our forum at dvblogic.

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