Looking to timeshift live radio

[drchops]

Generally the audio inputs work (ie in Windows) but not certain within the context of NextPVR.

I had another question. Would NextPVR support the use case where I wanted to watch the start of a program that is currently recording?

Also I wanted to say thanks for this support.

[mvallevand]

The stereo mixer device will need to be enabled so confirm that and some Windows drivers won't allow direct show capturing, we shall see.

Martin

[drchops]

The stereo mixer device will need to be enabled so confirm that and some Windows drivers won't allow direct show capturing, we shall see.

Martin

Is the stereo mix device required to record from the mic input?

Sterio mix is enabled btw

I wonder if the easiest option is to create a stream in vlc and then add it to NextPVR?

[mvallevand]

For a radio output you would use audio in not a mic input unless you really were using one. If you can write a VLC script to output to stdout sure that is possible. I feel ffmpeg will be easier.

Martin

[mvallevand]

From the command prompt try

cd "C:\Program Files\NextPVR\Other"

run

ffmpeg -f dshow -list_devices true -i dummy

Find the the device that is line input something like this

[dshow @ 000002cb5f9c60c0] "Line In (Realtek® Audio)" (audio)

the see if if plays with

ffplay -f dshow -i audio="Line In (Realtek® Audio)"

Once you get working that we can create an extra. I leave it to you to get ffplay working.

Martin

[drchops]

libavutil      57. 28.100 / 57. 28.100
  libavcodec    59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter    8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample  4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
Input #0, dshow, from 'audio=Microphone (Realtek High Definition Audio)':
  Duration: N/A, start: 728119.387000, bitrate: 1411 kb/s
  Stream #0:0: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
728123.87 M-A:  0.000 fd=  0 aq=    0KB vq=    0KB sq=    0B f=0/0

Yep, that works. I don't have a line in but by juggling the input and output volumes the mic input sounds fine.

[mvallevand]

Does the stereo mix device also come up? I guess it doesn't matter if your PC doesn't have audio in.

Because of the impedance I suspect it will sound poor but if you are happy that is what counts.

Martin

[mvallevand]

I would create this as extras-ABC-Melbourne.xml in the NextPVR data directory. Then rescan NextPVR devices and it should be available as a device to listen to.

Code:

<extras title="Local Radio">
        <channel name="ABC Melbourne" number="25" service_type="2">
                <command>ffmpeg</command>
                <args>-v panic -f dshow -i audio="Microphone (Realtek High Definition Audio)" -vcodec none -acodec aac  -b:a 192k  -f mpegts -</args>
        </channel>
</extras>

Martin

[drchops]

I would create this as extras-ABC-Melbourne.xml in the NextPVR data directory.  Then rescan NextPVR devices and it should be available as a device to listen to.

Code:

<extras title="Local Radio">
        <channel name="ABC Melbourne" number="25" service_type="2">
                <command>ffmpeg</command>
                <args>-v panic -f dshow -i audio="Microphone (Realtek High Definition Audio)" -vcodec none -acodec aac  -b:a 192k  -f mpegts -</args>
        </channel>
[/extras]

Martin

Thanks for that Martin, it's not working. When I hit refresh there are no additional devices. I also tried changing the last line to </extras> 

I've also attached a screenshot in case I've done anything silly.

[mvallevand]

You put it in the wrong folder, it should be the data folder but I did make a mistake on my original post with the last extras.

Maritn