Choppy 1080 playback to HDTV
- Thread starter Justin
- Start date
SpringWater
Member
This might be caused by lower refresh rate of your tv, for example your laptop has a refresh rate of 60hz and your tv has a refresh rate of 30hz. Try to play around in the refresh rate settings. I'm not a pro so don't judge me if I'm telling you lies 
Just trying to help...
Just trying to help...
salvage-this
Active Member
^It's a fine suggestion.
Can you give us the resolution of your laptop screen and the CPU usage when playing the same 1080 file on your laptop screen and on the TV?
are you using the Toshiba or the Mac laptop?
Can you give us the resolution of your laptop screen and the CPU usage when playing the same 1080 file on your laptop screen and on the TV?
are you using the Toshiba or the Mac laptop?
salvage-this
Active Member
Hmm that is weird. Is the file on your HDD or is it flash/silverlght?
Edit: look at your power settings if it's not already on performance see if that would change anything. I don't really have high hopes since you are only < 30% usage but it is worth a shot.
Edit: look at your power settings if it's not already on performance see if that would change anything. I don't really have high hopes since you are only < 30% usage but it is worth a shot.
salvage-this
Active Member
Unlikely but If you want to test it hook up your Mac to the TV and try it out.
Are you running it in full screen mode or windowed mode?
Are you running it in full screen mode or windowed mode?
Justin
VIP Member
My Mac doesn't have HDMI out.
I've tried both full screen and windowed, both were laggy.
salvage-this
Active Member
Weird. do you have any other 1080 files that are not tied to iTunes that you could test with?
salvage-this
Active Member
http://superuser.com/questions/4345...d-or-streaming-hd-1080p-or-720p-video-or-stan
If that is correct 22 Mbps would be all that you would need to average for the video to play fine. I would hope you hard drive can transfer faster than that.
Can you change the resolution of your TV to 720 and then try it again? I have no idea if that will help.
If that is correct 22 Mbps would be all that you would need to average for the video to play fine. I would hope you hard drive can transfer faster than that.
Can you change the resolution of your TV to 720 and then try it again? I have no idea if that will help.
Last edited:
salvage-this
Active Member
I find that hard to believe that the 330m can't handle 1080p files. Might as well post up GPU usage and see what it is at.
Do you know if you have an intelligent switch for your GPU on that laptop? It might be trying to play from the integrated GPU rather than the 330m.
Do you know if you have an intelligent switch for your GPU on that laptop? It might be trying to play from the integrated GPU rather than the 330m.
G80FTW
Active Member
My PC does the exact same thing, which is why I choose to use my Xbox to watch DVDs.
Im just taking a shot in the dark here, but it may have something to do with the response time of the TV and not the refresh rate. Since I dont think video cards are really designed to be used with TVs, the data they output may differ from that of a DVD player that was. And generally speaking monitors usually have a faster response time than TVs which I believe is why they are more expensive. So I believe the video cards are designed to work with faster response times than a TV offers.
Although that may be completely wrong. My TV operates at 60Hz and my other TV operates at 120hz and both are choppy playing back a DVD. Its not bad by any means, but its enough to be annoying.
Im pretty certain your drives have nothing to do with it though.
Im just taking a shot in the dark here, but it may have something to do with the response time of the TV and not the refresh rate. Since I dont think video cards are really designed to be used with TVs, the data they output may differ from that of a DVD player that was. And generally speaking monitors usually have a faster response time than TVs which I believe is why they are more expensive. So I believe the video cards are designed to work with faster response times than a TV offers.
Although that may be completely wrong. My TV operates at 60Hz and my other TV operates at 120hz and both are choppy playing back a DVD. Its not bad by any means, but its enough to be annoying.
Im pretty certain your drives have nothing to do with it though.
salvage-this
Active Member
Copy it to a flash drive and see what happens.
Okedokey
Well-Known Member
Good idea, but unfortunately USB3 is the only implementation quicker than the theoretical maximum of 300MB/s you may expect from that HDD. In reality a slow HDD, fragmented on a laptop may got below a tenth of that. Given HD @ 1080p requires 28MB/s, you may be getting bottlenecks. At 0.4GB/s through USB3 that would remove the bottleneck for sure.
OP, got thunderbolt on that Mac and iphone 5?
Last edited:
salvage-this
Active Member
How much speed do you think you really need for 1080? My HDDs are theoretically capped at 300mb/s but I have only seen it get close to 140mb/s once. Average is around 70mb/s. I have enough speed to play 1080 files on one monitor and game on the other.