Opened 19 years ago
Closed 19 years ago
Last modified 19 years ago
#2294 closed defect (fixed)
Internal DVD player - chopping and pixelated picture
| Reported by: | anonymous | Owned by: | skamithi |
|---|---|---|---|
| Priority: | minor | Milestone: | 0.21 |
| Component: | mythtv | Version: | head |
| Severity: | medium | Keywords: | |
| Cc: | Ticket locked: | no |
Description
When playing "Madagascar" with the internal DVD player (SVN 10997), the main title is chopping and in sections where there's a lot of movement, the image gets pixelated or blocky. Interestingly, when I do 'mythfronend -v playback,audio' it goes away.
Attachments (2)
Change History (17)
by , 19 years ago
| Attachment: | mythdvd_output added |
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comment:1 by , 19 years ago
| Component: | mythdvd → mythtv |
|---|---|
| Owner: | changed from to |
| Priority: | major → minor |
| Severity: | high → medium |
comment:2 by , 19 years ago
Forgot to mention - it works flawlessly in xine with 'xine -pfhq dvd://'
comment:3 by , 19 years ago
can u reproduce this everytime with this dvd ? is this the only dvd you have found , so far, with this problem ? have u used libmpeg2 instead of the standard decoder and seen the same results ?
if the answer of all these questions is yes, then i'll add the movie to my netflix queue and attempt to reproduce this. i need to know the exact times during the movie where the blockiness occurs. give about 3 examples.
comment:4 by , 19 years ago
1) YES - I can reproduce this every time 2) I haven't checked other DVDs with this SVN revision. I will do so as soon as I get a chance. I have to leave for the weekend but should be able to do this on Monday evening. 3) NO! Turns out if I use the libmpeg2, I get about 2-3 seconds of choppiness and pixelation during the Dreamworks opening, but then it's fine for the rest of the movie.
It seems to me like it has something to do with the A/V sync. That could be why there's no problem when I put the '-v playback,audio' debug flags in? The debugging slows something down enough that they're able to sync correctly? I dunno - just a guess.
comment:5 by , 19 years ago
I have tested other DVDs. I can not find another DVD that responds the same way. FYI - this choppiness / pixelation seems to occur every time the DVD is accessed (approximately twice every second). Is there anything else that I can provide?
comment:6 by , 19 years ago
i put it my netflix list. i hope i can reproduce it. u are using the standard decoder setting right ? not xvmc ?
comment:7 by , 19 years ago
Correct - standard decoder. I hope you're able to reproduce it as well. It worries me that it goes away when I run the frontend with '-v playback,audio' *even* using the standard decoder...
comment:8 by , 19 years ago
| Milestone: | unknown → 0.21 |
|---|---|
| Status: | new → assigned |
| Version: | → head |
by , 19 years ago
| Attachment: | ticket_2294.diff added |
|---|
reproduced the issue. if i disable seekreset at the start of a title, this seems to resolve the issue for me. pls test.
comment:9 by , 19 years ago
I'm beginning to think that there's more to this than this specific DVD. I've been having problems with general A/V sync when playing Videos as well. And looking at the user list, there have been a LOT of emails about problems with A/V sync or Audio cutting out. Something's going on with the Standard decoder that's affecting a lot of people (unfortunately not you or Isaac).
follow-up: 11 comment:10 by , 19 years ago
Don't know if it relates, however whenever I check use audio as a timebase now in the tv playback setting I get a similar problem. I lose digital audio as it jumps back and forth from digital to analog and playback gets extremely choppy. I uncheck this box and everything is smooth again. I'm using FC5 and a few days before the .20 release. This is only with the internal dvd player. Live tv is fine (pvr250) Chad
comment:11 by , 19 years ago
Replying to gremlin190@yahoo.com:
Don't know if it relates, however whenever I check use audio as a timebase now in the tv playback setting I get a similar problem. I lose digital audio as it jumps back and forth from digital to analog and playback gets extremely choppy. I uncheck this box and everything is smooth again. I'm using FC5 and a few days before the .20 release. This is only with the internal dvd player. Live tv is fine (pvr250) Chad
Ooops, I meant to say video as a timebase.
comment:12 by , 19 years ago
The patch fixes the issue for me in the main title! One question though - I'm still getting choppiness / intermittent audio loss in the initial dreamworks intro (before the root menu). Do you see this? If not, I suspect it's more of my A/V sync issues.... :-(
comment:13 by , 19 years ago
no chopiness in the initial intro for me. i would suggest trying gremlin1's suggestion of using video as the timebase. perhaps that will work better for you .
i'll commit the patch in this ticket this wknd. thanks for testing.
comment:14 by , 19 years ago
| Resolution: | → fixed |
|---|---|
| Status: | assigned → closed |
Output with -v playback,libav