Opened 12 years ago

Closed 12 years ago

#4002 closed defect (invalid)

Mythtv audio and Dvico FusionHDTV5 RT Gold

Reported by: anonymous Owned by: Isaac Richards
Priority: minor Milestone: unknown
Component: mythtv Version: 0.20.2
Severity: medium Keywords: audio dvico fusionHDTV
Cc: Ticket locked: no

Description

Capture Card: Dvico FusionHDTV5 RT Gold
Motherboard: Abit AB9 Quad GT
CPU: Intel 2.4GHz Quad-core
Distribution: Ubunutu 7.04 64-bit
Audio device: /dev/dsp
Video device: /dev/video0
Using as an anolog device.
mythtv version: 0.20.2 (proposed ubuntu 7.04 package)

Description: I have the audio from the capture card plugged in to the cd-in on the motherboard. Using TvTime? or XawTV, I have no problems with audio and video. Using mythtv, I have two situations when changing options on alsamixer:

  1. Set cd-in mute and capture I get no audio using mythtv. Recorded shows have no audio.
  2. Set cd-in unmute and capture, I get no audio using mythtv until I change the channel. After changing the channel, the audio is 7-8 seconds out of sync. Trying to sync using 'm' key will not work. Additionally, video becomes laggy on my quad-core/8GB RAM/Raptor HD computer. Eventually, mythtv reports an error with the video.

Best Guess: the audio is not being caputured properly by mythtv during situation #1. This is the correct configuration for alsa as described by the mythtv help on audio found here http://www.mythtv.org/docs/mythtv-HOWTO-7.html.

Some relevant output:

amixer
Simple mixer control 'Headphone',0
  Capabilities: pswitch
  Playback channels: Front Left - Front Right
  Mono:
  Front Left: Playback [on]
  Front Right: Playback [on]
Simple mixer control 'PCM',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 0 [0%] [-51.00dB]
  Front Right: Playback 0 [0%] [-51.00dB]
Simple mixer control 'Front',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 22 [71%] [-13.50dB] [on]
  Front Right: Playback 22 [71%] [-13.50dB] [on]
Simple mixer control 'Front Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Surround',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 17 [55%] [-21.00dB] [off]
  Front Right: Playback 17 [55%] [-21.00dB] [off]
Simple mixer control 'Center',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 31
  Mono: Playback 12 [39%] [-28.50dB] [on]
Simple mixer control 'LFE',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 31
  Mono: Playback 11 [35%] [-30.00dB] [on]
Simple mixer control 'Side',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 11 [35%] [-30.00dB] [on]
  Front Right: Playback 11 [35%] [-30.00dB] [on]
Simple mixer control 'Line',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'CD',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 23 [74%] [0.00dB] [off]
  Front Right: Playback 23 [74%] [0.00dB] [off]
Simple mixer control 'Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined cswitch cswitch-joined
  Playback channels: Mono
  Capture channels: Mono
  Mono: Playback [off] Capture [off]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 24 [77%] [19.50dB] [on]
  Front Right: Capture 24 [77%] [19.50dB] [on]
Simple mixer control 'Capture',1
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 24 [77%] [19.50dB] [on]
  Front Right: Capture 24 [77%] [19.50dB] [on]
Simple mixer control 'Input Source',0
  Capabilities: enum
  Items: 'Mic' 'Front Mic' 'Line' 'CD'
  Item0: 'CD'
Simple mixer control 'Input Source',1
  Capabilities: enum
  Items: 'Mic' 'Front Mic' 'Line' 'CD'
  Item0: 'CD'

Change History (3)

comment:1 Changed 12 years ago by nilshomer@…

I apologize for the double ticket (4001 and 4002),

Nils Homer nilshomer@…

comment:2 Changed 12 years ago by nilshomer@…

I have fixed my setup so that the audio is in sync with the video in mythtv. However, the problem of having to change the channel to get audio is still present. Below is a my amixer to get the capture settings correct.

I still must change the channel before hearing audio. Please let me know how else I can debug this problem.

>amixer
Simple mixer control 'Headphone',0
  Capabilities: pswitch
  Playback channels: Front Left - Front Right
  Mono:
  Front Left: Playback [on]
  Front Right: Playback [on]
Simple mixer control 'PCM',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 179 [70%] [-15.20dB]
  Front Right: Playback 179 [70%] [-15.20dB]
Simple mixer control 'Front',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 25 [81%] [-9.00dB] [on]
  Front Right: Playback 25 [81%] [-9.00dB] [on]
Simple mixer control 'Front Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [on]
  Front Right: Playback 0 [0%] [-34.50dB] [on]
Simple mixer control 'Surround',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-46.50dB] [on]
  Front Right: Playback 0 [0%] [-46.50dB] [on]
Simple mixer control 'Center',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 31
  Mono: Playback 0 [0%] [-46.50dB] [on]
Simple mixer control 'LFE',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 31
  Mono: Playback 0 [0%] [-46.50dB] [on]
Simple mixer control 'Side',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-46.50dB] [on]
  Front Right: Playback 0 [0%] [-46.50dB] [on]
Simple mixer control 'Line',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'CD',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 31 [100%] [12.00dB] [off]
  Front Right: Playback 31 [100%] [12.00dB] [off]
Simple mixer control 'Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined cswitch cswitch-joined
  Playback channels: Mono
  Capture channels: Mono
  Mono: Playback [off] Capture [off]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 18 [58%] [10.50dB] [on]
  Front Right: Capture 18 [58%] [10.50dB] [on]
Simple mixer control 'Capture',1
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 0 [0%] [-16.50dB] [off]
  Front Right: Capture 0 [0%] [-16.50dB] [off]
Simple mixer control 'Input Source',0
  Capabilities: enum
  Items: 'Mic' 'Front Mic' 'Line' 'CD'
  Item0: 'CD'
Simple mixer control 'Input Source',1
  Capabilities: enum
  Items: 'Mic' 'Front Mic' 'Line' 'CD'
  Item0: 'Mic'

comment:3 Changed 12 years ago by danielk

Resolution: invalid
Status: newclosed

With the info provided this would appear to be a driver bug. But this may also be fixed by #3405, which adds ALSA native capture.

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