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choppy blu ray playback on some blu rays?

I

iOrbit

macrumors 6502a
Original poster
Mar 8, 2012
569
30
okay, every single film i'v played on my laptop, has played fine.

but nearly all BBC documentaries (Human Planet, Life, Wonders of the universe) are playing back choppy, including the sound.
everything displays fine but the actual playback is as if its playing slower than 1x speed - not by a lot, but enough to be unwatchable.

these blu rays played perfectly fine on my ps3..

what gives? anyone else have this experience?
 
M

mic j

macrumors 68030
Mar 15, 2012
2,663
156
iOrbit said:
okay, every single film i'v played on my laptop, has played fine.

but nearly all BBC documentaries (Human Planet, Life, Wonders of the universe) are playing back choppy, including the sound.
everything displays fine but the actual playback is as if its playing slower than 1x speed - not by a lot, but enough to be unwatchable.

these blu rays played perfectly fine on my ps3..

what gives? anyone else have this experience?
Click to expand...
Sounds like a frame rate problem, just off the top of my head. If you have mediainfo or media inspector, take a look at what it says about your video frame rate.
 
M

mic j

macrumors 68030
Mar 15, 2012
2,663
156
iOrbit said:
which app is easier to check with as i have neither?
Click to expand...
They're equal. I would go with whatever is cheaper or even better...free. It's a nice tool to have in your "toolbox" for when you need to check things. So it's good to get one regardless.

Additional thought: Do you have VLC media player? You can pull up some info from that if you have it. Although it is not as comprehensive, it may provide what's needed in this case.
 
M

Menneisyys2

macrumors 603
Jun 7, 2011
5,997
1,101
iOrbit said:
okay, every single film i'v played on my laptop, has played fine.

but nearly all BBC documentaries (Human Planet, Life, Wonders of the universe) are playing back choppy, including the sound.
everything displays fine but the actual playback is as if its playing slower than 1x speed - not by a lot, but enough to be unwatchable.

these blu rays played perfectly fine on my ps3..

what gives? anyone else have this experience?
Click to expand...

Some of the BD-based BBC docus have really high bitrates. Even the ATV3 has problems with video streams (massively) over 20 Mbps - unlike any of the A5+ iDevices, for example. In your case, this may have been the problem.

The only fix for this issue is reencoding at a much lower bitrate (say, around 10-12 Mbps, which still produces great IQ).
 
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