Opened 10 years ago

Closed 10 years ago

#8677 closed defect (Works for me)

Upconvert/upmix hangs frontend

Reported by: argus Owned by: JYA
Priority: minor Milestone: unknown
Component: MythTV - Audio Output Version: 0.23-fixes
Severity: medium Keywords: audio upconvert hang
Cc: Ticket locked: no


For the last while, I've experienced frontend hangs during playback of some HD content (sample attached) from only one OTA channel.

It appears that that frontend goes into an infinite loop on playback in AudioOutputBase::_AddSamples() resulting in an NPV pre-buffering hang with this particular file.

Turning off audio "upconvert" options on the frontend provides workaround. With upconvert off the file plays fine.

Attached mpg file hangs internal player with audio upconvert turned on.

To recreate:

Turn on 5.1 upconvert options (mythfrontend). Play attached recording sample using built-in player.

Most recordings from this channel cause the hang, either the entire recording or when entering commericals.

Using ALSA:spdif as sound backend w. 5.1 speaker configuration (lenny amd64 distro).

Change History (4)

comment:1 Changed 10 years ago by anonymous

Sample file is 25MB -- only 10 seconds of video. Too large to attach directly to bug.

File can be downloaded from here:

If there is a better way to transfer larger samples, please advise.

comment:2 Changed 10 years ago by robertm

Component: MythTV - Video PlaybackMythTV - Audio Output
Owner: changed from Janne Grunau to JYA
Status: newassigned

comment:3 Changed 10 years ago by JYA

Status: assignedinfoneeded

I can not download the sample, could you please repost it ? "This file is either removed due to copyright claim or is deleted by the uploader"

comment:4 Changed 10 years ago by JYA

Resolution: Works for me
Status: infoneededclosed

This part was completely rewritten in trunk... Assuming it is fixed. If not reopen the ticket

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