DVB-T Radio (and FM!)

[ACTCMS]

Just feel sad my coding skills arn't up to the task. ( If it had been written in QuickBasic :-) ... )

I don't know if mine are up to it either... but there is only one way to find out...

[mvallevand]

I can confirm that the digital AC3 audio from HVR 1600 clear QAM is working to PVRX2 too! I find I have to tune a video channel first (the signal strength popup doesn't come up) but afterwards it works really well. It would nice to not have them in the EPG somehow and still be able tune by channel number, continuing this wishlist thread.

I haven't got it working with on the mvp mvpmc yet. It seems to streams ok, getting 200k of data seems to full short, but I still will need to work on demuxing this stream.

Martin

[bgowland]

I've just been sitting downstairs listening to DVB-T radio on my MVP using Music Library and a gbnetradio-0.mp3 file generated from a little exe I built.

Unfortunately, we're still talking Alpha level code here. The exe obviously wants to exit as soon as it has built and started running the DS graph so, to get it to work, it's suspended on a breakpoint in VS. Not exactly user-friendly.

I'll call it a day at this point (3:30am and I need to eat then sleep) and I'll look at it again tomorrow.

Some more work to be done to prevent collisions with tuners that are in use and to allow normal GB-PVR use of tuners. Also embedding playback into a plugin rather than going through Music Library.

@mvallevand - if you can provide details of a graph that works for the AC3 audio streams you receive then I'll look at adding it as an option although I'm concentrating on UK DVB-T at the moment.

Cheers,
Brian

[EDIT] Got it playing back through a plugin. Sweet.

[mvallevand]

@mvallevand - if you can provide details of a graph that works for the AC3 audio streams you receive then I'll look at adding it as an option although I'm concentrating on UK DVB-T at the moment.

Thanks, I'm still hoping to get this working directly to avoid the mp3 conversion. I was able to do this with TSReader so am optimistic.

Martin

[bgowland]

Thanks, I'm still hoping to get this working directly to avoid the mp3 conversion. I was able to do this with TSReader so am optimistic.

OK. Ultimately I'm looking at setting up scheduling recordings from radio listings though. I'm personally not interested in streaming to my MVP as I have an STB which will play all of this stuff live anyway.

Streaming to MVP is just a side-effect of the development process.

Cheers,
Brian

[mvallevand]

OK. Ultimately I'm looking at setting up scheduling recordings from radio listings though. I'm personally not interested in streaming to my MVP as I have an STB which will play all of this stuff live anyway.

Streaming to MVP is just a side-effect of the development process.

There may be a fundamental difference, I can already schedule and record from the EPG as a manual recording, (there is no EPG data available). The Cyberlink mux creates the mpeg-ps file with the AC3 data.

Martin

[cosmocat]

bgowland wrote...

[EDIT] Got it playing back through a plugin. Sweet.

Have you got any further with this?

I keep getting stuttering in the audio stream, and when I try combining the audio with a video channel from the same mux, I get no picture and still stuttering audio. ( I have been trying Radio 4 from the Mendip transmitter)
Has anybody got to the bottom of this stuttering ?

Cheers

[bgowland]

Have you got any further with this?

Only a small amount more - it works fine but still needs extra logic to prevent it conflicting with GB-PVR. Unfortunately work priorities have put this on the back-burner again - I'm hoping I can get back to it later this week.

Cheers,
Brian

[ACTCMS]

I keep getting stuttering in the audio stream, and when I try combining the audio with a video channel from the same mux, I get no picture and still stuttering audio. ( I have been trying Radio 4 from the Mendip transmitter)

I tried adding a video stream was able to see it, but audio still jerky. bgowland suggested problem might be related to audio stream bitrate... I did a bit of testing (like you do) and that seems to be the case... 96 seems to be OK, 128 mostly works, 192... forget it.

Alex

As an aside: It looks like I could set up a pseudo channel combining BBC One video and BBC Radio Scotland audio... ideal for watching the football...

[bgowland]

I may be back on track with this stuff sooner than I thought. I just found the root of a problem in another project I'm working on.

Now to find a big stick and the person who 'tweaked' something when I wasn't looking.

Cheers,
Brian