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More => Old Versions => JRiver Media Center 18 for Windows => Topic started by: drhyoung on June 03, 2013, 05:28:12 pm

Title: RTMPE, STDIN, and Custom External Programs
Post by: drhyoung on June 03, 2013, 05:28:12 pm

Hi,

Unfortunately one of our radio stations - for some very unknown reason - changed to using the RTMPE protocol. Thankfully rtmpdump came to the rescue.

I'm not sure I have the best solution, so some of the expertise on the forum would be appreciated.

Implementing rtmpdump with MC18 gave me two challenges:
(1) rtmpdump can stream to STDOUT, in my case FLV. But I had to use VLC to receive it. VLC then outputs to the Windows default soundcard which I then have MC18 use live://loopback to pick up.
Does MC18 support piping FLV directly to STDIN ? If it does, how do I "play" it ?
(2) I was hoping to solve my problem by having a two-track PlayList, with the first track invoking a custom external program, a .CMD file and the START command, that in turn invoked my rtmpdump streaming to the Windows default soundcard. After the START command, the .CMD file exited and I was expecting that control would return to the playlist to play the 2nd track which was live://loopback . But I found that control didn't return to MC18, so live://loopback never played. Is there anything I need to do to force the .CMD to return control to MC18 ?

Thanks,
David

Title: Re: RTMPE, STDIN, and Custom External Programs
Post by: Matt on June 04, 2013, 08:36:55 pm

Could you share a sample RTMPE URL that you're providing to rtmpdump?  Include all the parameters if possible.

We might be able to get it playing natively in MC.

Title: Re: RTMPE, STDIN, and Custom External Programs
Post by: drhyoung on June 04, 2013, 09:40:25 pm

Thanks (and fingers crossed).

This is the URL:
RTMPE://live-geo.mediaworks.co.nz/live/morefmwellington_64kbps

And the full command line is:
"C:\Program Files (x86)\rtmpdump.exe" -r RTMPE://live-geo.mediaworks.co.nz/live/morefmwellington_64kbps --buffer 72000000 --realtime | "C:\Program Files\VideoLAN\VLC\vlc.exe" - -Incurse

If I change the protocol to RTMP then MC18 will sometimes play it natively, but only after a 1-2 minute delay.

Title: Re: RTMPE, STDIN, and Custom External Programs
Post by: Matt on June 05, 2013, 09:09:18 am

That link does play natively for me, although it takes a while to get going.

I used MC > File > Open URL... with this URL:
RTMPE://live-geo.mediaworks.co.nz/live/morefmwellington_64kbps

To open the RTMP stream takes around 5 seconds.  Then, it takes LAV Splitter / Decoder a while to read enough data to let playback begin.  Sometimes streams are a challenge for a parser because they only provide data at a real-time data rate, so reading ahead something that seems conservative like 1MB could take a long time on a low bitrate realtime stream.

I'll send this thread to nevcairiel (author of LAV) just to see if he has any thoughts on the startup time.

Here's the playback graph:

Code: [Select]

Filter Graph Info:

    Filter 'JRiver Audio Renderer'
        CLSID: {A4002F8E-510F-442C-8AD3-F9C7B23FB394}
        Host:
        Input Pin 'In'
            Connected to pin 'Output' of filter 'LAV Audio Decoder (auto-configured)'
            Major type MEDIATYPE_Audio  Sub type MEDIASUBTYPE_IEEE_FLOAT, Format type FORMAT_WaveFormatEx

    Filter 'LAV Audio Decoder (auto-configured)'
        CLSID: {E8E73B6B-4CB3-44A4-BE99-4F7BCB96E491}
        Host: C:\Users\Main\AppData\Roaming\J River\Media Center 18\Plugins\lav\LAVAudio.ax
        Input Pin 'Input'
            Connected to pin 'Output' of filter 'JRiver Audio Monitor'
            Major type MEDIATYPE_Audio  Sub type Unknown GUID Name: {53544441-0000-0010-8000-00AA00389B71}, Format type FORMAT_WaveFormatEx
        Output Pin 'Output'
            Connected to pin 'In' of filter 'JRiver Audio Renderer'
            Major type MEDIATYPE_Audio  Sub type MEDIASUBTYPE_IEEE_FLOAT, Format type FORMAT_WaveFormatEx

    Filter 'JRiver Audio Monitor'
        CLSID: {A4207487-E7D8-406B-9882-B66370DE2492}
        Host:
        Input Pin 'Input'
            Connected to pin 'Audio' of filter 'LAV Splitter (auto-configured)'
            Major type MEDIATYPE_Audio  Sub type Unknown GUID Name: {53544441-0000-0010-8000-00AA00389B71}, Format type FORMAT_WaveFormatEx
        Output Pin 'Output'
            Connected to pin 'Input' of filter 'LAV Audio Decoder (auto-configured)'
            Major type MEDIATYPE_Audio  Sub type Unknown GUID Name: {53544441-0000-0010-8000-00AA00389B71}, Format type FORMAT_WaveFormatEx

    Filter 'LAV Splitter (auto-configured)'
        CLSID: {171252A0-8820-4AFE-9DF8-5C92B2D66B04}
        Host: c:\program files (x86)\lav filters\lavsplitter.ax
        Input Pin 'Input'
            Connected to pin 'Output' of filter 'JRiver Reader Source Filter'
            Major type TIME_FORMAT_NONE  Sub type TIME_FORMAT_NONE, Format type TIME_FORMAT_NONE
        Output Pin 'Audio'
            Connected to pin 'Input' of filter 'JRiver Audio Monitor'
            Major type MEDIATYPE_Audio  Sub type Unknown GUID Name: {53544441-0000-0010-8000-00AA00389B71}, Format type FORMAT_WaveFormatEx

    Filter 'JRiver Reader Source Filter'
        CLSID: {25FF55CB-CE77-4F64-A9D2-CA89BA57E8A5}
        Host:
        Output Pin 'Output'
            Connected to pin 'Input' of filter 'LAV Splitter (auto-configured)'
            Major type TIME_FORMAT_NONE  Sub type TIME_FORMAT_NONE, Format type TIME_FORMAT_NONE

Title: Re: RTMPE, STDIN, and Custom External Programs
Post by: drhyoung on June 05, 2013, 03:51:39 pm

Hi Matt,

thanks for this.