More Nikon D800 1080P video tests

PappasArts said:
A comparison of the internal H2.64 codec to recording externally to ProRes422 and ProRes 422 LT.
Be sure to switch quality to 1080P.
Click to expand...
Yes, but as someone said 45 minutes ago...

« The youtube compression obscures any chance of useful comparison. Unless you post a link to the original source video, this is a waste of time and effort. There are other video sharing sites which permit source file download. One of them starts with a "V", and ends with a "imeo". » ~ elkindbb (youtube user)
 
PappasArts said:
A comparison of the internal H2.64 codec to recording externally to ProRes422 and ProRes 422 LT.
Be sure to switch quality to 1080P.
Click to expand...

Would have been great if the camera hadn't been moved between internal and external recording. Would be much easier to look at particular issues between the two.
 
Emanuel said:
Yes, but as someone said 45 minutes ago...
« The youtube compression obscures any chance of useful comparison. Unless you post a link to the original source video, this is a waste of time and effort. There are other video sharing sites which permit source file download. One of them starts with a "V", and ends with a "imeo". » ~ elkindbb (youtube user)
Click to expand...

The original contributor of the h.264 vs. ProRes comparison clip replied that Vimeo permits only h.264-encoded files. After checking the Vimeo upload guidelines, it seems that h.264 encoding at 5Mbits/sec (max) are hard limits for uploaded files. Is this good enough for critical comparison purposes? It's certainly better than what youtube offers, from what little I've seen of both, but that doesn't mean 5Mbits/second + h.264 is "good enough".

What is the best (of less-than-ideal options, perhaps) choice for posting video for IQ comparison?

-- Bob Elkind
 
Some really nice looking footage in this thread. I really liked the stuff with the metro and helicopter shots. But yeah, trying to judge differences in compression on an already compressed video, is a bit pointless IMO.
 
eteam said:
The original contributor of the h.264 vs. ProRes comparison clip replied that Vimeo permits only h.264-encoded files. After checking the Vimeo upload guidelines, it seems that h.264 encoding at 5Mbits/sec (max) are hard limits for uploaded files. Is this good enough for critical comparison purposes? It's certainly better than what youtube offers, from what little I've seen of both, but that doesn't mean 5Mbits/second + h.264 is "good enough".

What is the best (of less-than-ideal options, perhaps) choice for posting video for IQ comparison?

-- Bob Elkind
Click to expand...

Vimeo accepts files straight from the camera (i think?) so 5Mbps is only a guideline. 24Mbs is a possible upload for sure.
 
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Hi Bob E.: In my experience, Vimeo allows you to upload all sorts of video files, including odd ducks like camera-original hacked GH2 ".MTS" files recorded at silly-high data rates, and these files can be downloaded by Vimeo members.

But, Vimeo's compression robots and/or the in-browser Vimeo player will choke on many such files, and as a result they might not be playable on Vimeo itself. If you download the file that the user uploaded to Vimeo, it can be played in VLC, QT player, NLEs, etc.

Other than Vimeo, there are a variety of "free" file sharing sites out on the 'tubes. I don't use them much, but I have a client that uses YouSendIt, and others with 'tube-stupid names like MegaUpload, TheDingoAteMyBaby (that last one I made up). :-)

YMMV. Cheers.
 
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Hi Pappas, Do you mind my asking what picture profile setting on D800 was used for the blonde girl interiew.

Steve.
 
here is another test i found with clean hdmi , the one who posted it says :
is completley useless as it is now. When panning even slightly jagged interlaced like edges apear and ghosting is horrible
but he also contacted atomos they told him their working to solve it , and it wouldnt be an issue in the future
 
t.p. said:
here is another test i found with clean hdmi , the one who posted it says :
is completley useless as it is now. When panning even slightly jagged interlaced like edges apear and ghosting is horrible
but he also contacted atomos they told him their working to solve it , and it wouldnt be an issue in the future
Click to expand...
Sounds like pulldown not handled properly. Just a guess...
New firmware is on the way, according to forum posts.

-- Bob Elkind
 
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