DVB-C radio not working (1 Viewer)

[torrinha]

@Owlsroost:

just tested the attached TsWriter, but had no luck with it.

I recorded and attached a sample of a radio channel playing in ProgDVB.
Hope it helps...

 

[hello_joe]

Could you also provide updated log files from the test please?

 

[torrinha]

Sure!
I did both tests again (TV Server preview and MediaPortal Client).

This time the MP Client log is a little 'full'...
I did not disabled some plugins, but I think it has nothing to do with the problem...

 

[hello_joe]

Hmmm, maybe something is still not right in the TsWriter because I don't see it starting to throttle the buffer size yet.
Is the TS file size still zero?

 

[torrinha]

Yep...
Still size zero...

 

[hello_joe]

@Owlsroost

MPEG 2 spec page 47 (TS_program_map_section)

PCR_PID – This is a 13-bit field indicating the PID of the Transport Stream packets which shall contain the PCR fields
valid for the program specified by program_number. If no PCR is associated with a program definition for private
streams, then this field shall take the value of 0x1FFF. Refer to the semantic definition of PCR in 2.4.3.5 and Table 2-3
for restrictions on the choice of PCR_PID value.

So maybe this channel does not have PCR at all, in which case TsWriter presently can't support timeshifting/recording it.

 

[Owlsroost]

@Owlsroost

MPEG 2 spec page 47 (TS_program_map_section)

PCR_PID – This is a 13-bit field indicating the PID of the Transport Stream packets which shall contain the PCR fields
valid for the program specified by program_number. If no PCR is associated with a program definition for private
streams, then this field shall take the value of 0x1FFF. Refer to the semantic definition of PCR in 2.4.3.5 and Table 2-3
for restrictions on the choice of PCR_PID value.

So maybe this channel does not have PCR at all, in which case TsWriter presently can't support timeshifting/recording it.

I was just thinking that might be the problem myself......I think you are correct....TsReader.ax can't play the sample recording either (for the same reason - it can't handle streams without a PCR).

 

[Owlsroost]

Actually, looking at the sample recording with this stream analyser - http://www.pjdaniel.org.uk/mpeg/ - it has got plenty of audio packets with PCR data, so in this case I suspect the PCR pid should be the same as the audio stream pid (0x97)

 

[Owlsroost]

Managed to modify TsReader.ax so it can play the stream - think about TsWriter next (although that might take longer....not very familiar with the code)

 

[hello_joe]

Managed to modify TsReader.ax so it can play the stream - think about TsWriter next (although that might take longer....not very familiar with the code)

Are you modifying TsReader/TsWriter to be able to play streams without PCR (eg. by reconstructing PCR on the fly), or are you modifying them to find the PCR in alternate streams?