Dear Roman
Thank you for your answer.
We as Swisscom Switzerland are in a difficult situation. We have around
1'000 Live / Replay TV Channels and 500 Radio Channels on our Platform.
For Live TV we could manage the Loudness in the Transcoder/Encoding Settings. We
were able to measure and align all Loudness differences and adjust to -23dB.
Zapping from one TV Channel to another makes no audible difference anymore.
The Problem is the change from Live TV to Radio on our Android Set-Top-Box.
We are looking for a solution to align the Radio Loudness over the 500 Radio
Channels.
So you don't see any possibility to send an ExoPlayer message (like a
Metadata) to the Player?
We saw that the following commands are coming from the Backend IceCast Proxy to
the Android STB:
tvlib.ExoRadioPlayer: onPlaybackStateChanged(state=Idle)
tvlib.ExoRadioPlayer: onIsLoadingChanged(isLoading=false)
tvlib.ExoRadioPlayer: onPlaybackStateChanged(state=Buffering)
Why not adding a ExoPlayer Volume Parameter within the Radio Channel start
For example ?
exoPlayer.sendMessage(audioRenderer,
MediaCodecAudioTrackRenderer.MSG_SET_VOLUME, 0.9f);
A static setting on the ExoPlayer in the client is not an option, because the
Player is also used by other applications.
Changing Volume in Set-top-box will affect all applications.
Sincerely,
Patrick
Von: Roman Gorshunov <paye600 at gmail.com>
Gesendet: Mittwoch, 24. August 2022 19:18
An: Schneider Patrick, B2C-TSP-ITE <Patrick.Schneider1 at swisscom.com>
Cc: icecast-dev at xiph.org
Betreff: Re: [Icecast-dev] Radio Loudness
Hello Patrick,
It?s not really a media streaming server?s (Icecast) job to alter the volume.
Volume is set either by the media source or in player.
In addition to that, media streaming server does not allow clients (players) to
control media source (e.g. change volume or skip tracks).
I might misunderstood your question though.
Best regards,
Roman Gorshunov
On 24 Aug 2022, at 11:11, Patrick.Schneider1 at
swisscom.com<mailto:Patrick.Schneider1 at swisscom.com> wrote:
?
Dear All
We are looking for a solution to send a volume parameter to our ExoPlayer during
the icecast streaming initialization phase.
Something like this ?
Volume example:
exoPlayer.sendMessage(audioRenderer,
MediaCodecAudioTrackRenderer.MSG_SET_VOLUME, 0.9f);
Is there a way to set the icecast egress streaming with an ExoPlayer default
Volume?
Sincerely,
Patrick
_______________________________________________
Icecast-dev mailing list
Icecast-dev at xiph.org<mailto:Icecast-dev at xiph.org>
http://lists.xiph.org/mailman/listinfo/icecast-dev
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Accidentally replied off-list first, here again my reply on-list. Sorry for the confusion. Hi, see my replies inline:> >>> On 25. Aug 2022, at 13:48, Patrick.Schneider1 at swisscom.com wrote: >>> >> ? >> Dear Roman >> >> Thank you for your answer. >> >> We as Swisscom Switzerland are in a difficult situation. We have around 1'000 Live / Replay TV Channels and 500 Radio Channels on our Platform. >> For Live TV we could manage the Loudness in the Transcoder/Encoding Settings. We were able to measure and align all Loudness differences and adjust to -23dB. >> Zapping from one TV Channel to another makes no audible difference anymore. >> >> The Problem is the change from Live TV to Radio on our Android Set-Top-Box. >> We are looking for a solution to align the Radio Loudness over the 500 Radio Channels. >> >> So you don't see any possibility to send an ExoPlayer message (like a Metadata) to the Player? >So if I understand correctly you want to send over a loudness adjustment parameter over for a specific radio station on start of playback?>> >> We saw that the following commands are coming from the Backend IceCast Proxy to the Android STB: >> >(Please note the correct spelling is Icecast)>> tvlib.ExoRadioPlayer: onPlaybackStateChanged(state=Idle) >> tvlib.ExoRadioPlayer: onIsLoadingChanged(isLoading=false) >> tvlib.ExoRadioPlayer: onPlaybackStateChanged(state=Buffering) >> >> Why not adding a ExoPlayer Volume Parameter within the Radio Channel start >> For example ? >> exoPlayer.sendMessage(audioRenderer, MediaCodecAudioTrackRenderer.MSG_SET_VOLUME, 0.9f); >> >> >Icecast does not send any explicit messages over to the player, it just provides a HTTP stream. One option would be to include a special HTTP header in Icecasts response, and make ExoPlayer use that (not sure if it provides necessary API for that though).>> A static setting on the ExoPlayer in the client is not an option, because the Player is also used by other applications. >> Changing Volume in Set-top-box will affect all applications. >> >So you are not even invoking ExoPlayer programmatically in a way where you can set such settings? Then even the approach I suggested above might not be feasible. However if you want someone to look further into the matter, this might be beyond what volunteers on this list can do, especially as it is not really about solely Icecast but your specific integration/client software.>> Sincerely, >> Patrick >> >> >> Von: Roman Gorshunov <paye600 at gmail.com> >> Gesendet: Mittwoch, 24. August 2022 19:18 >> An: Schneider Patrick, B2C-TSP-ITE <Patrick.Schneider1 at swisscom.com> >> Cc: icecast-dev at xiph.org >> Betreff: Re: [Icecast-dev] Radio Loudness >> >> Hello Patrick, >> >> It?s not really a media streaming server?s (Icecast) job to alter the volume. Volume is set either by the media source or in player. >> In addition to that, media streaming server does not allow clients (players) to control media source (e.g. change volume or skip tracks). >> >> I might misunderstood your question though. >> >> Best regards, >> Roman Gorshunov >> >> >> On 24 Aug 2022, at 11:11, Patrick.Schneider1 at swisscom.com wrote: >> >> ? >> Dear All >> >> We are looking for a solution to send a volume parameter to our ExoPlayer during the icecast streaming initialization phase. >> Something like this ? >> >> Volume example: >> exoPlayer.sendMessage(audioRenderer, MediaCodecAudioTrackRenderer.MSG_SET_VOLUME, 0.9f); >> >> Is there a way to set the icecast egress streaming with an ExoPlayer default Volume? >> >> Sincerely, >> Patrick >> >> >> >> >> >> _______________________________________________ >> Icecast-dev mailing list >> Icecast-dev at xiph.org >> http://lists.xiph.org/mailman/listinfo/icecast-dev >> _______________________________________________ >> Icecast-dev mailing list >> Icecast-dev at xiph.org >> http://lists.xiph.org/mailman/listinfo/icecast-dev-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xiph.org/pipermail/icecast-dev/attachments/20220825/6b2dfef7/attachment.htm>
Dear Patrick,> We saw that the following commands are coming from the Backend IceCastProxy to the Android STB Icecast does not explicitly send any commands to its clients (players). It simply pushes audio streams and a little bit of metadata (title, artist, bitrate, etc.) over HTTP. HTTP protocol and Icecast do allow embedding arbitrary HTTP protocol headers [0] and send them to the client, and it would be up to the client to interpret them. However, these headers are rather static, and can not be changed dynamically on the fly. If your media sources require different but static adjustment of loudness (e.g. "Radio 1" always needs "+10" adjustment, and "radio 2" always nesds "-5" adjustment), then you can set it in your custom HTTP headers per mount point, and process those settings in your client (ExoPlayer in STB?) to change volume. With a bit of software development you could make it possible to adjust HTTP headers dynamically [1]. To do so you would need to continuously monitor loudness of source media streams and send metadata update commands to the Icecast server. Another possible solution would be to add a software between your original media sources (radio stations) and Icecast, which will normalize loudness and then push modified audio to Icecast as a media source. Some possible media source clients are listed [2] on Icecast web site. [0] - https://icecast.org/docs/icecast-2.4.1/config-file.html#mountsettings , look for <http-headers> description [1] - in a way similar to stream Metadata updates https://icecast.org/docs/icecast-2.4.1/admin-interface.html [2] - https://icecast.org/apps/ Best regards, Roman Gorshunov On Thu, 25 Aug 2022 at 12:48, <Patrick.Schneider1 at swisscom.com> wrote:> Dear Roman > > Thank you for your answer. > > We as Swisscom Switzerland are in a difficult situation. We have around > 1'000 Live / Replay TV Channels and 500 Radio Channels on our Platform. > For Live TV we could manage the Loudness in the Transcoder/Encoding > Settings. We were able to measure and align all Loudness differences and > adjust to -23dB. > Zapping from one TV Channel to another makes no audible difference anymore. > > The Problem is the change from Live TV to Radio on our Android Set-Top-Box. > We are looking for a solution to align the Radio Loudness over the 500 > Radio Channels. > > So you don't see any possibility to send an ExoPlayer message (like a > Metadata) to the Player? > > We saw that the following commands are coming from the Backend IceCast > Proxy to the Android STB: > > > > tvlib.ExoRadioPlayer: onPlaybackStateChanged(state=Idle) > > tvlib.ExoRadioPlayer: onIsLoadingChanged(isLoading=false) > > tvlib.ExoRadioPlayer: onPlaybackStateChanged(state=Buffering) > > Why not adding a ExoPlayer Volume Parameter within the Radio Channel start > For example ? > exoPlayer.sendMessage(audioRenderer, > MediaCodecAudioTrackRenderer.MSG_SET_VOLUME, 0.9f); > > > A static setting on the ExoPlayer in the client is not an option, because > the Player is also used by other applications. > Changing Volume in Set-top-box will affect all applications. > > Sincerely, > Patrick > > > > *Von:* Roman Gorshunov <paye600 at gmail.com> > *Gesendet:* Mittwoch, 24. August 2022 19:18 > *An:* Schneider Patrick, B2C-TSP-ITE <Patrick.Schneider1 at swisscom.com> > *Cc:* icecast-dev at xiph.org > *Betreff:* Re: [Icecast-dev] Radio Loudness > > > > Hello Patrick, > > > > It?s not really a media streaming server?s (Icecast) job to alter the > volume. Volume is set either by the media source or in player. > > In addition to that, media streaming server does not allow clients > (players) to control media source (e.g. change volume or skip tracks). > > > > I might misunderstood your question though. > > > > Best regards, > > Roman Gorshunov > > > > On 24 Aug 2022, at 11:11, Patrick.Schneider1 at swisscom.com wrote: > > ? > > Dear All > > We are looking for a solution to send a volume parameter to our ExoPlayer > during the icecast streaming initialization phase. > Something like this ? > > Volume example: > exoPlayer.sendMessage(audioRenderer, > MediaCodecAudioTrackRenderer.MSG_SET_VOLUME, 0.9f); > > > Is there a way to set the icecast egress streaming with an ExoPlayer > default Volume? > > Sincerely, > Patrick > > > > > _______________________________________________ > Icecast-dev mailing list > Icecast-dev at xiph.org > http://lists.xiph.org/mailman/listinfo/icecast-dev > >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xiph.org/pipermail/icecast-dev/attachments/20220825/e66990c7/attachment-0001.htm>