Rather than absolute file types both .MOV and .MP4 are what are known as Container formats. They can hold various file types in a single file. The .M4V extension is a variation of the .MP4 (MPEG-4) type known as MPEG-4 Visual. So the question is: what do you want to do with the file?
If you want to edit the file then the .MOV option is a good choice as it allows editing to take place without the need to handle and rewrite the original files.
If you want to upload a video to the web then the H.264 option (itself part of the MP4 specification known as H.264/AVC/MPEG-4 Part 10) is a good choice offering the highest quality balanced with the smallest file size that is widely usable - for example the FLV (another container format) videos found on YouTube can be H.264.
If you want to burn a video onto a DVD then MPEG-2 would be preferable as that will be read by all DVD players.
Within any option you can alter the quality by increasing/decreasing the compression and delivery rates. If the video is going to a phone the data rate could be down to 80 kbit per second and the sane video viewed on a computer would be delivered at up to 5 Mbit per second.
There is no simple answer as it will depend upon the nature of the video file, what you wish to do with it, and what you would consider an acceptable quality.
It depends on the quality of the video and the file type. A small file quality in mp4 file format will probably be about 4 hrs. A high quality mp4 file will probably be about 2 hrs on a 1 gigabyte storage device
No, generally any conversion of any type makes the quality progressively worse over time. Th ere may not be the biggest change in difference of the video and audio quality at first, but if the same video keeps getting converted, there will be a noticeable change in both video and audio quality.
video file and R4?
There is a program called DivX. It should be able to handle any type of video you throw at it, and convert it.
This is a question that is impossible to answer. It depends on the length of the video, the amount of compression you are using, compression type, audio quality, resolution settings, video bit rate, the file type you are converting from, the file type you are converting to, how many passes you use during encoding, what software you are using, what hardware you have, etc. There is a virtually endless amount of possible conversion variations and answers to this question.
Showletter refers to the type of highest resolution picture file. Showletter contains more pixels than any other type of picture file.
Download Youtube downloader just google it then click import video and click on the video file it saved. Note that you have to change the file type to wmv not flv as youtube downloader will want to save it as. There is an option to convert the file type in the download program.
Well anytime you shrink the size of a file you are actually reducing the amount of 0's and 1's attached to that file. So, there will inevitably be a loss of quality. Now, the more drastic the compression the greater the loss of quality. I would try a couple different formats to see which one you think gives you the greatest size to quality ratio. Most people find the compression of mp3 acceptable. I believe wma's are a little smaller in file size whereas .ogg is the least compressed but has the highest quality. To actually go about converting a file to a different file type you just need to do a google search for (your file type) to mp3 converter or something like that and download the simple program.
It can be of any type. Files are not disk specific...
mpeg-4 or 3gp, you can convert your video files using prism video file converter http://www.nchsoftware.com/prism/ . - bebo.com/comes_with_music
To change an HTML video to another video file type you need to save it as the file you want. On your desktop or laptop computer, you can pull up your video and click save as. Use the drop down menu to choose how it is saved. To return to the original (normal) view, you just save as the original file type. You can view videos of how to change an HTML file by visiting the YouTube websites.
CDs can hold any type of file. Image, video, audio, document, program,...