Opened 14 years ago
Closed 14 years ago
#8996 closed defect (Invalid)
wrong lpcm sound channel assignments
| Reported by: | anonymous | Owned by: | JYA |
|---|---|---|---|
| Priority: | trivial | Milestone: | unknown |
| Component: | MythTV - Audio Output | Version: | Master Head |
| Severity: | low | Keywords: | |
| Cc: | Ticket locked: | yes |
Description
I've test TrueHD with a testmovie from dolby labs. But myth lpcm doesn't match the audio channel.
Center come from leftsuround. Rightsuround doesn't work. Leftsuround come from center. LFE doesn't work.
And a other problem. If I select lpcm dts-hd with 7ch core doesn't work. It is possible to disable lpcm for non hd?
Attachments (3)
Change History (13)
comment:1 Changed 14 years ago by
| Milestone: | 0.24 → unknown |
|---|---|
| Priority: | major → trivial |
| Severity: | medium → low |
| Status: | new → infoneeded_new |
comment:2 Changed 14 years ago by
sorry for my mistake by creating this ticket, thank you it is processed anyway
I've attach requested log, plus 2 logs for my DTS HD problem.
I know that myth (ffmeg) not support DTS HD. But e.g. "The Transporter" has DTS-ES as DTS core, this say myth and my av-reciever too. But if I enable lpcm with 7.1 output I hear nothing (0 Channel audio?)
comment:3 Changed 14 years ago by
| Status: | infoneeded_new → assigned |
|---|
comment:4 Changed 14 years ago by
| Status: | assigned → infoneeded |
|---|
Please provide a sample. Those logs shows that your ALSA audio buffer is set too low too play those files.
Increase it (echo 512 | sudo tee /proc/asound/card0/pcm3p/sub0/prealloc).
Other than that, there's no error showing up in the log ; and you should hear something.
Does your TV or Amp supports 7.1 LPCM ?
comment:5 Changed 14 years ago by
| Resolution: | → Invalid |
|---|---|
| Status: | infoneeded → closed |
I see no error in the DTS passthrough log either. More likely a local problem with your amplifier or TV not support LPCM audio.
Uncheck LPCM.
comment:6 Changed 14 years ago by
my av reciever should support lpcm up to 192k.
truehd channels not mached, please test it with "Dolby TrueHD Channel Check (Lossless)" from http://www.demo-world.eu/trailers/high-definition-trailers.php, sorry to forget it in my last comment.
normal dts passtrough work, but if i enable lpcm and 7.1 output dts-es doesn't work. "echo 512 | sudo tee /proc/asound/card0/pcm3p/sub0/prealloc" not help :(.
comment:7 Changed 14 years ago by
| Resolution: | Invalid |
|---|---|
| Status: | closed → new |
comment:8 Changed 14 years ago by
| Resolution: | → Invalid |
|---|---|
| Status: | new → closed |
| Ticket locked: | set |
reopening a ticket with no additional comment or debug info is unacceptable.
comment:9 Changed 14 years ago by
| Resolution: | Invalid |
|---|---|
| Status: | closed → new |
comment:10 Changed 14 years ago by
| Resolution: | → Invalid |
|---|---|
| Status: | new → closed |
Please see the ticket howto, do not set priority or milestone. Can you provide the movie to test against?
DTS-HD is unsupported in ffmpeg (and thus in myth) anyway, all it does is strip out the DTS core, which only supports up to 5.1 channels of audio. Thus, there is no such thing as "LPCM DTS-HD" or a 7 channel core.
Also, need -v audio logs.