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[Request] 16 bit WAV output on mediaplayer NOT BITPERFECT

Audio mediaplayer 16bit

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Re: [Request] 16 bit WAV output on mediaplayer NOT BITPERFECT #21 athoik

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Posted 1 June 2015 - 21:37

It would be nice also to try once again using flag GST_PLAY_FLAG_NATIVE_AUDIO. So flags will be flags=0x67

That will make audio convert/resample go away.
Wavefield T90: 0.8W - 1.9E - 4.8E - 13E - 16E - 19.2E - 23.5E - 26E - 33E - 39E - 42E - 45E on EMP Centauri DiseqC 16/1
Unamed: 13E Quattro - 9E Quattro on IKUSI MS-0916

Re: [Request] 16 bit WAV output on mediaplayer NOT BITPERFECT #22 goodspirit

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Posted 2 June 2015 - 09:59

Here the DOTs of using flag GST_PLAY_FLAG_NATIVE_AUDIO...

Can one see from the graphs whether Dithering is activated somewhere?

Attached Files

  • Attached File  V4.zip   417.94KB   2 downloads


Re: [Request] 16 bit WAV output on mediaplayer NOT BITPERFECT #23 betacentauri

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Posted 2 June 2015 - 17:04

I can only see that audio convert and audio resample are not used any longer.


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Re: [Request] 16 bit WAV output on mediaplayer NOT BITPERFECT #24 athoik

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Posted 2 June 2015 - 17:06

Hi,

Using GST_PLAY_FLAG_NATIVE_AUDIO no audio convert/resample is involved, as you can see in the graph2 (zip contains original image).

So if it doesn't work for you then it is possible that drivers are not bit-perfect... (dvbaudiosink simply wraps data into PES using the apropriate hardware ioctl).

I hope to get an asnwer from your STB manufacturer.


Additionally asking GStreamer devs won't harm (but since you are using GST_PLAY_FLAG_NATIVE_AUDIO I am 99% sure that no convertion is happening in buffers).

Attached Files


Wavefield T90: 0.8W - 1.9E - 4.8E - 13E - 16E - 19.2E - 23.5E - 26E - 33E - 39E - 42E - 45E on EMP Centauri DiseqC 16/1
Unamed: 13E Quattro - 9E Quattro on IKUSI MS-0916


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