1080p And 720p?

Marcus

Marcus

Tremour Sphere
Im editing using premiere pro cs6
i've just been rendering a video with a bitrate of 18 which is deemed to be fantastic quality for youtube.
One thing i noticed was 1080p and 720p have no difference in file size what so ever?
Is this normal or am i just missing something here?
i believed their too be a massive jump in file size between the 2 qualitys
 
There's no way they should be the same id have though. Raw camera footage on a drift is roughly double between the two. Definitely sure 1080 went in and out both times?
 
Lurch said:
There's no way they should be the same id have though. Raw camera footage on a drift is roughly double between the two. Definitely sure 1080 went in and out both times?
Click to expand...
changing between 1080 and 720 dosen't get effected on the suggested file size, the only thing that changes that is the bit rate (quality) that i render at
 
Maybe the change in the bit rate was what kept it the same file size. I would imagine 1080 to be a bitter file. My camera is set to film in 720 so I haven't gotten a chance to see what it's like using 1080.
 
its strange though? i was looking at a tutorial for best settings and it said to put my bit rate to 18k which between 10-20 is good quality.
and if i put it to 18 and change between 720 and 1080 theirs no file size change at all? so why would anyone ever use 720 if thats the case?
its so confusing.
i am looking at like 956mb video's in 1080p though which im not sure if thats bad?
 
i think i've found the solution its very strange though.
basically 1080p has to have a decent size bit rate like 20 or 18
and for a 720p video you have around 5-10 which is when the jump in file size comes in to play
you could make a 1080p video with 10 bit rate but i have no idea how that would come out.
 
Its not unusual at all. The bitrate governs file size. 240p at 50mbit has the same amount of information at 1080p at 50mbit. But low res does not need high bit rate to look good, while higher res does need higher bit rate.
The drift ghost s records by default 720 at 15Mbps, 1080 at 17Mbps and 1080 60fps at 18Mbps. So lower res is smaller file size due to the bit rate.

How long is your video Marcus? I upload a 10 minute video at 1080 60 18Mbps and its about 1.3Gb.
Dont bother encoding a 10Mbps file at 18Mbps though, as its a waste of time. You cand ADD extra detail to your footage.
 
Actually, I could be wrong about the default recordings??? My older drift recorded 720 at 8Mbps. Im not sure what the new one records at.
 
oh i see, sorry for the late reply: i had a 9 minuite video at around 1gb, but it makes sense what you say about 720 not needing a massive bit rate unlike 1080.
how long does 1gb roughly take to upload?
or should i just stick to 720p with 500mb file sizes?
 
720p @ 18M
1080p @ 18M

Doesn't matter... If you want your file size to change you will have to drop the bitrate. Changing the resolution won't do a thing. 18M 720p will look crisper than 18M 1080p due to the same data per second being used for a smaller resolution. But the output file size will stay the same.

And upload times vary greatly depending on your ISP and connection to the YouTube server. It literally takes 2-3 hours for me to upload a typical 1080p video (10-15 minutes). But I upload at night, so no real issue for me. I am sleeping at the time... Hahaha!
 
This thread is funny.

If you export at 18Mbps you will always have the same file size, which will be 18Mbps :P

Your 1080p video will just be more compressed than the 720p one.
 
Wow, this shows how much of a newb I am. My last video on youtube wasn't very good quality at 720.
I usually use 1080 and it looks way better. I have no idea what bit rates are and how to change them.. lol.
 
After you hit export, try using .H264 then in video tab check your bit rate settings.
youtube has a cap approx 16-18mb or something.
 
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