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Trouble playing 4K video?

Megalith

Megalith

24-bit/48kHz
Joined
Aug 20, 2006
Messages
13,000
I don't know if this is the right section for this, but I downloaded my first real 4K video for shits and giggles. I have a pretty decent PC (i7 3770k, GTX 680, 32G RAM), so I was surprised to find how long it took just to load the video and have it start playing. And it basically freezes if I try to seek through it or change audio streams.

Is this normal? I find it hard to believe that any consumer 4K players out there are more powerful than my machine.

For those curious, here is the video file:

http://videos.movie-list.com/vob/djaxle/Elysium_trailer_1_4K_B_DTSHDMA.mkv
 
You have an ssd or hard drive? Gonna take a wild guess it is your storage device is what is causing the video stuttering. Looks as though uncompressed 4k video would have a bitrate of 566.23 MB/s. Compression will help out quite a bit but even youtube eats 25Mbps when doing their extremely compressed 4k on my machine.

Beyond that what did you use to play the video back vlc? And what was your cpu usage at?
 
Yeah, I'm curious to know what you used to try and play back the file.

If it was just Windows Media Player well then that's probably your problem... I'd try Media Player Classic - Home Cinema or VLC...

I'm downloading that trailer now to see how it fares on my machine... you have piqued my curiosity. :D
 
I am able to watch this trailer with no problem with my setup. I guess SSD helps a lot. It loads fast, almost like regular movie.
 
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Plays back perfectly on the rig in my sig using MPC-HC x64... and that's playing straight off my old trusty 'storage' drive, which is a Western Digital 640GB AAKS drive (WD6400AAKS).

<EDIT>

I just tried playing the same file with Windows Media Player 11 or 12 (or whatever it is that comes with Windows 7) and it took about a minute to even load, and then stuttered like hell. The lesson to be learned here? Don't freakin' use WMP for anything.... it sucks donkey ass.
 
Blue Falcon said:
<EDIT>

I just tried playing the same file with Windows Media Player 11 or 12 (or whatever it is that comes with Windows 7) and it took about a minute to even load, and then stuttered like hell. The lesson to be learned here? Don't freakin' use WMP for anything.... it sucks donkey ass.
Click to expand...

I find this quite amusing given that while WMP does seriously suck, whatever they're using in media center is quite decent actually.
 
FnordMan said:
I find this quite amusing given that while WMP does seriously suck, whatever they're using in media center is quite decent actually.
Click to expand...


It could just be a codec issue since most people are running alternative, better media players. I find with the right codec's WMP often times plays files more smoothly than others, at the cost of having to deal with codec packs.
 
If you don't have a 4K display...why would you even waste time downloading a 4K video?
 
Liger88 said:
It could just be a codec issue since most people are running alternative, better media players. I find with the right codec's WMP often times plays files more smoothly than others, at the cost of having to deal with codec packs.
Click to expand...

I agree, WMP is a fine player but the performance all comes down to the codec used
 
CPU core avg was 20%, GPU was at 20% the whole time. SSD was doing .05 MB/s every few seconds. No lag at all. Using VLC with the codec it came with.
 
dremic said:
yeah how does that work? does it scale it down automatically or something..?
Click to expand...

The computer will still render the movie with the same resolution but the display will only show whatever is screen is.
 
dremic said:
yeah how does that work? does it scale it down automatically or something..?
Click to expand...

Along with what Domini said above, all videos scale automatically.

Remember that most compression codecs are lossy, so a good decompression codec/software setup will be able to extract tremendous amounts of detail.

Not a big deal when playing higher resolution videos on a lower resolution screen, but it does mean that the two don't have to be coupled for good output.
 
I'm using MPC with madVR and LAV filters. I tried playing it with VLC and performance is noticeably better, so I figure it's madVR that is taxing the system.

I had a hunch that a 4K video downscaled to 1080 would look better than a native file, and I was right.
 
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