Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
.720. is within the file name, that probably means 720p but the website doesn't actually say HD. A different site says high definition but videos on there that are 20 minutes were only 20 something MB. The website I'm using now, videos on it look better....... But are they actually HD? The videos with .720. in the file name and are 230-300 MB in file size. And yes I know 720 HD isn't FULL HD. But there's no visible difference between 720p and 1080p on a small screen.
depends on the source material and what size the vid was shot at. If it were some awful vid taken by a cellphone/smartphone it could very well be upscaled to 720p. Even with cameras & phones that claim to take 720/1080 vids, the lens quality is soooo atrociously poor that everything is a tad fuzzy and not tack sharp like you would see with clips taken from DSLR's or dedicated vidcams. The grey area would be clips shot with Go-pro actioncams which can range from horrible to near-HD.
depends on the source material and what size the vid was shot at. If it were some awful vid taken by a cellphone/smartphone it could very well be upscaled to 720p. Even with cameras & phones that claim to take 720/1080 vids, the lens quality is soooo atrociously poor that everything is a tad fuzzy and not tack sharp like you would see with clips taken from DSLR's or dedicated vidcams. The grey area would be clips shot with Go-pro actioncams which can range from horrible to near-HD.
Not necessarily, DV for example which is SD is about 14GB's per hour. That's approximately what the highest quality HD on Bluray is however DV is only minimally compressed. Resolution is irrelevant to the filesize, file size is determined by the bitrate and the bitrate alone.
What bitrate is used is determined by many factors such as the resolution and the efficiency of the codec. For example DVD @720*480 is good between 4000kbps and 8000kbps. If you go lower the quality of the video suffers noticeably and if you go any higher in most cases you're just making a larger file with no benefit. Typically commercial video you buy in the store is 6000kbps which is about 4GB's per 1.5 hours and conveniently fits on a single sided DVD. If you want to use a lower bitrate that 4000kbps at that point you should lower the resolution, you lose detail but prevent macroblocking*.
In comparison a more efficient modern codec like WMV can use much lower bitrates @720*480. 1500kbps to 2000kbps will give you DVD quality.
Macroblocking is just what the name implies, these will blow up in scenes with a lot of action if there is not enough bitrate. The way compressed video works is that it reuses information from previous frames, it only adds what is needed. You may have seen this on youtube videos that were poorly processed or even on cable TV or Netflix type services. Especially with fire, lightning, flashing lights etc. This is often why people like yourself complain about digital video, full HD on Bluray on the other hand does not have these issues as they are encoded at a very high bitrate.
If I see that picture one more time Coalman......
hehehe j/k
I'll post the full video next time.
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.
Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
