Opened 13 years ago

Closed 13 years ago

#2509 closed defect (fixed)

Audio speed from mythtranscode in fifo mode is messed up

Reported by: xris Owned by: Isaac Richards
Priority: minor Milestone: unknown
Component: mythtv Version: 0.20
Severity: medium Keywords:
Cc: cpinkham Ticket locked: no

Description

Sometime between [11202] and [11313] (maybe [11294]?), anything I encode with nuvexport (it uses mythtranscode's fifo output method) has messed up (very fast) audio. This happens with all of the export types (ffmpeg and transcode), and it has the effect of the memory buffers growing huge from mythtranscode buffering video frames into RAM while sending out audio data faster than it should (it's almost like it's just ignoring some of the audio frames).

Anyway, nasty bug, and it prevents nuvexport from working. I'm rebuilding with [11294] removed and will update when I can test.

Change History (7)

comment:1 Changed 13 years ago by xris

Nope, looks like the culprit is something else.

comment:2 Changed 13 years ago by xris

Cc: cpinkham added

I just double-checked and reverted to [11202] and indeed the audio now works fine again.

comment:3 Changed 13 years ago by darkstarsword@…

I wonder if this is related to the problem I reported in #2501? It also occured in transcoding, though that was internal MPEG2->MPEG4, and only occur on recordings from a specific channel. The timeframe for the changes you provide sounds about right too.

comment:4 Changed 13 years ago by xris

up through [11294] and still no trouble.

comment:5 Changed 13 years ago by xris

And broken in [11313]

comment:6 Changed 13 years ago by xris

Ok, problem found. Must have been something wacky in ffmpeg's code. Keeping the rest up to date and reverting only the changes in [11307] fixes the problem.

comment:7 Changed 13 years ago by xris

Resolution: fixed
Status: newclosed

looks to be fixed in [11379]

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