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Philips 6501 - Passthrough problems
New firmware is out for QM163E and this time, changelog actually states "Audio fixes"...

https://www.download.p4c.philips.com/fil...hi_est.pdf

Have not tested myself, but upgrade is in progress and will report back soon.
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AC3 bitrate limitation is still present, so are all the other audio bugs...
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Well, the recent FW revision fixed my juddering/stuttering video issues I have had with KODI, so now at least it usable as it was before the M update.

As you have mentioned, the other bugs still prevail.
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(2017-04-26, 11:54)Jinx1337 Wrote: Well, the recent FW revision fixed my juddering/stuttering video issues I have had with KODI, so now at least it usable as it was before the M update.

As you have mentioned, the other bugs still prevail.

On my device there is so heavy stuttering with this firmware, that it is unwatchable. Big Grin
It even stutters, when "sync to display" is off.
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(2017-04-26, 11:54)Jinx1337 Wrote: Well, the recent FW revision fixed my juddering/stuttering video issues I have had with KODI, so now at least it usable as it was before the M update.

As you have mentioned, the other bugs still prevail.

Do you have the same username in the philips forum?
I hope philips could give you an answer to your question, and if they do in a PM, could you then share it with us
http://www.supportforum.philips.com/en/s...7181-7601)
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(2017-04-27, 11:41)Nednil Wrote: I hope philips could give you an answer to your question, and if they do in a PM, could you then share it with us
http://www.supportforum.philips.com/en/s...7181-7601)

They don't, they will delete that post if they discover it... Big Grin
Been there...
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actually they answered today, seems they are fixing dd 640 in the next update Smile

for dts they said something that totally disagree.

Maybe if we all keep pushing , something will come back
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(2017-04-27, 15:35)Etzi Wrote:
(2017-04-27, 11:41)Nednil Wrote: I hope philips could give you an answer to your question, and if they do in a PM, could you then share it with us
http://www.supportforum.philips.com/en/s...7181-7601)

They don't, they will delete that post if they discover it... Big Grin
Been there...

I tried to post to their technical feedback page for version QM163E_U_0.6.152.0 with our Passthrough problems, but the moderator did never accept my post Sad

Atleast we got a status update from them now.
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After I was "moderated" in forum, I went directly to Tech Support, gathered some contacts and submitted lots of technical data,
about API's, etc...

Never recieved anykind of response though.
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Philips has released several new firmwares in 2017 see link (55pus6501 firmware release note history).
Can anyone verify passthrough issues are fixed?
Can both 44/48kHz PCM play passthrough?
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AC3 Bitrate limitation got fixed in 0.10.77.2 for 55PUS6561, not sure what you mean by 44/48Khz PCM passtrough?
Stereo PCM never had an issue, at least I have not encoutered one...
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(2017-08-08, 00:07)Etzi Wrote: AC3 Bitrate limitation got fixed in 0.10.77.2 for 55PUS6561, not sure what you mean by 44/48Khz PCM passtrough?
Stereo PCM never had an issue, at least I have not encoutered one...

I mean PCM 44.1kHz (CD format) and PCM 48kHz (DVD format).
I had suffered in the past with Android resampling 44.1 to 48kHz or vice versa even in passthrough mode.
Can you please confirm there is no resampling when passthrough playing PCM 44.1 kHz and PCM 48 kHz?
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Lightbulb 
(2017-08-08, 15:18)vkostas Wrote:
(2017-08-08, 00:07)Etzi Wrote: AC3 Bitrate limitation got fixed in 0.10.77.2 for 55PUS6561, not sure what you mean by 44/48Khz PCM passtrough?
Stereo PCM never had an issue, at least I have not encoutered one...

I mean PCM 44.1kHz (CD format) and PCM 48kHz (DVD format).
I had suffered in the past with Android resampling 44.1 to 48kHz or vice versa even in passthrough mode.
Can you please confirm there is no resampling when passthrough playing PCM 44.1 kHz and PCM 48 kHz?

Finally I got my own 6501 and can tell from first hand my experience.
TV sends audio to AVR via optical (toslink) cable. My AVR is not ARC (Audio return channel) capable so HDMI is used only for video stream AVR->TV.
  1. Native player (so called Media)
    plays well audio/video files from USB stick or DLNA server (Synology NAS).
    I tried all clips from http://4ksamples.com and they play without any issues.
    AC3/DTS play well (passthrough, no upmix). My AVR receives AAC converted to AC3.
    I can tell PCM 44.1/48kHz audio files play bit perfect! (I tested DTS-WAV files encapsulated into FLAC format files. The slightest change in the stream (volume control, etc) kills the DTS encapsulated stream).
    Edit: UTF srt subtitles are NOT supported. Maybe I have missed some settings.
    Edit2: Thanks to this Russian forum (and to google translator) I managed to change the character set to UTF-8.
  2. Kodi
    All good except no DTS at all.
    Video with DTS audio freezes when passthrough option is on.
    No passthrough for PCM files (tested with DTS-WAV 44.1/48kHz). All are resampled to 48kHz.
    Tried even shitty build kodi-20170729-1e523d7-shitty-armeabi-v7a.apk from http://mirrors.kodi.tv/test-builds/android/arm/ without success (No video freeze but no DTS as well).
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I have a Philips 55pus6561 and I received android 7.1.2 a couple of days ago.
Philips version QM163E.0.15.176.3


And now No passthrough seems to working anymore, with the same settings as before and kodi 17.4
Have anyone else received this version?
and have the same issues´?
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The problem is that on Nougat, Kodi forces to use the newly introduced IEC API. MediaTek driver does not support that. It can only do AC3 and EAC3 via RAW API. Kodi needs to query the capabilities via AudioDeviceInfo::getEncodings and fall back to RAW API in case IEC is not supported.


What happened to the Philips support forums? Can't access them anymore.
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