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4096 x 2160p vs 3840x2160
Desintegrator:
I've just realized the HD downsampled versions of 4K clips are offered with very small file sizes Shutterstock.
A 10second clip is 8 Megabytes. That's around 6mbit/s bitrate.
Isn't that unacceptably low? I cannot imagine providing useful quality for further processing in that size. That should be around Youtube quality which is sometimes questionable even for final delivery. And stock clips should be considered like raw material for further processing.
I always have the intention to provide HD clips in 100mbit/s the minimum
increasingdifficulty:
--- Quote from: Desintegrator on November 18, 2019, 13:12 ---I've just realized the HD downsampled versions of 4K clips are offered with very small file sizes Shutterstock.
A 10second clip is 8 Megabytes. That's around 6mbit/s bitrate.
--- End quote ---
Where do you see that? I see from around 25-80 mbit/sec depending on the content.
100 mbit for HD is good, but in reality, NEAR perfect quality can be obtained with 100 mbit for 4k, which most smaller cameras film with (GH4/GH5 100/150 mbit) and that 4k quality is quite pristine. No, not as good as a ProRes capture of course, but very good.
Desintegrator:
--- Quote from: increasingdifficulty on November 18, 2019, 13:36 ---
--- Quote from: Desintegrator on November 18, 2019, 13:12 ---I've just realized the HD downsampled versions of 4K clips are offered with very small file sizes Shutterstock.
A 10second clip is 8 Megabytes. That's around 6mbit/s bitrate.
--- End quote ---
Where do you see that? I see from around 25-80 mbit/sec depending on the content.
100 mbit for HD is good, but in reality, NEAR perfect quality can be obtained with 100 mbit for 4k, which most smaller cameras film with (GH4/GH5 100/150 mbit) and that 4k quality is quite pristine. No, not as good as a ProRes capture of course, but very good.
--- End quote ---
If i click on my older 4k clips, the HD version file size is around 100-200 Megabytes
On clips uploaded nowadays it's 8-10 Megabytes...
I understand that 100 mbit/s is not absolutely necessary for good quality HD, but 6 seems way too low
Desintegrator:
--- Quote from: Desintegrator on November 18, 2019, 14:30 ---
--- Quote from: increasingdifficulty on November 18, 2019, 13:36 ---
--- Quote from: Desintegrator on November 18, 2019, 13:12 ---I've just realized the HD downsampled versions of 4K clips are offered with very small file sizes Shutterstock.
A 10second clip is 8 Megabytes. That's around 6mbit/s bitrate.
--- End quote ---
Where do you see that? I see from around 25-80 mbit/sec depending on the content.
100 mbit for HD is good, but in reality, NEAR perfect quality can be obtained with 100 mbit for 4k, which most smaller cameras film with (GH4/GH5 100/150 mbit) and that 4k quality is quite pristine. No, not as good as a ProRes capture of course, but very good.
--- End quote ---
If i click on my older 4k clips, the HD version file size is around 100-200 Megabytes
On clips uploaded nowadays it's 8-10 Megabytes...
I understand the 100 mbit/s is not absolutely necessary for good quality HD, bzt 6 seems way too low
--- End quote ---
Ok, my very recently uploaded clips have bigger file sizes for HD versions again. Looks like there was a period recently when SS converted them really low. I have even a 18 second clip where the HD version is just 6.1 MB
Desintegrator:
Also noticed that 4096*2160 is downsized to 2047*2160 instead of 2048.
Couldn't that deter buyers? It's strange to have an odd-numbered dimension. I don't if such problems exist today, but around 15 years ago when I first had to deal with video codecs and such there were some codecs and some editing software where the dimensions of the clips had to be divisible by 8. (which basically every standard video resolution is)
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