----- Original Message -----
From: "Bryan Mayland" <[EMAIL PROTECTED]>
To: "Discussion list for development of the IVTV driver"
<[email protected]>
Sent: Tuesday, November 29, 2005 7:50 PM
Subject: Re: [ivtv-devel] Please test 0.4.1 branch!
Ruud Huynen wrote:
Ruud Huynen wrote:
Around release 0.3.7f (algorithm) modifications were made to egalize the volume
difference between 350 and 500.
I never tried those releases after 0.3.7b(or d).
With the tagged 0.4.0 release I notice a big difference. The 350 is twice as
load as the 500.
I lived with the older 0.3.7 release, but I never noticed such a big volume
difference as with the 0.4.0 release.
I remember them well, since I made them :)
You're saying if you record the same content on both cards simultaneously at the same volume settings (check ivtvctl -d
(dev) -Y), you get a different volume for each card? The code is there to map them both to the same range, and in my objective
testing they were the same in recorded files. This is on a pvr-150, but it should be the same on a 500.
I noticed a difference:
[EMAIL PROTECTED]:/usr/local/bin> ./ivtvctl -d /dev/video0 -Y (PVR350)
ioctl: VIDIOC_QUERYCTRL
Brightness = 127
Contrast = 63
Saturation = 63
Hue = 0
Volume = 62225
Mute = 0
[EMAIL PROTECTED]:/usr/local/bin> ./ivtvctl -d /dev/video1 -Y (PVR500-1)
ioctl: VIDIOC_QUERYCTRL
Brightness = 127
Contrast = 63
Saturation = 63
Hue = 0
Volume = 61952
Mute = 0
[EMAIL PROTECTED]:/usr/local/bin> ./ivtvctl -d /dev/video2 -Y (PVR500-2)
ioctl: VIDIOC_QUERYCTRL
Brightness = 127
Contrast = 63
Saturation = 63
Hue = 0
Volume = 61952
Mute = 0
I don't set the volume. Is this the calculated volume from the driver, where the value can be different to receive the same
volume.
Do I have to set them to the same value.
Yeah this appears to be set to 95% volume on all tuners. The PVR150/500 code rounds down to the nearest 512 boundary so trying
to set it to 62225 would result in it coming out 61952. Those /should/ theoretically come out with the same volume. I wonder
why your 350 is so loud :/
Does myth set the volume on each recording to 95% at the start of a recording ?
When yes, there is no solution to change it before starting myth or at the start of the recording with a channel-change script,
which in our case sets the volume.
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