Opened 15 years ago

Closed 15 years ago

Last modified 14 years ago

#2591 closed defect (fixed)

ivtc filter can cause stuttering

Reported by: John Poet <jppoet@…> Owned by: skamithi
Priority: minor Milestone: unknown
Component: mythtv Version: 0.20
Severity: medium Keywords: ivtc filter stutter
Cc: Ticket locked: no


A week ago I started having stuttering problems on two channels: DiscoveryHD and UniversalHD. Both of these channels are recorded via firewire. For a while I thought I was having a problem with any program recorded via firewire, but finally realized it was only those two channels.

After racking my brain trying to think of anything that had changed in my setup, I remembered adding ivtc to my custom filter list. I turned on "playback" debugging, and sure enough, ivtc was being activated inappropriately. After removing ivtc, the stuttering has gone away.

What is interesting about this, is that the stuttering may not usually happen right away. It can take up to 10 minutes before it starts. Once it starts, however, it does not go away.

I am attaching a "-v playback" log.


Attachments (2)

ivtc.log (19.6 KB) - added by John Poet <jppoet@…> 15 years ago.
-v playback log
ticket_2591.diff (546 bytes) - added by skamithi 15 years ago.
apply filter if its less or equal to 720.

Download all attachments as: .zip

Change History (5)

Changed 15 years ago by John Poet <jppoet@…>

Attachment: ivtc.log added

-v playback log

comment:1 Changed 15 years ago by skamithi

Owner: changed from Isaac Richards to skamithi
Status: newassigned

john for now i'll can tell the ivtc filter to not activate when playing 1080i content.

does the video stutter when watching any other type of channel or when watching an anime/cartoon dvd ?

Changed 15 years ago by skamithi

Attachment: ticket_2591.diff added

apply filter if its less or equal to 720.

comment:2 Changed 15 years ago by skamithi

Resolution: fixed
Status: assignedclosed

(In [11580]) Closes #2591. enable ivtc filter if video width is <= 720

comment:3 Changed 14 years ago by skamithi

(In [14463]) Refs #2591. remove restriction on ivtc filter since video profiles have been introduced and ivtc filter can use mmx for 64bit cpus.

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