I think, you do not exactly know, whats going on. So a little and
not completed explanation.
What you see as a video clip, is no video. What you see is 24 full pictures per second. In full HD (1920x1080 pixels), that is over 2MB per picture, so that is over 48MB per second to show. Nowadays no problem. But computers were not as fast as today in former times and 48MB per second was not possible. And the TV sets in that time were not able to show that big picture. So:
- The pictures were not so big.
- The pictures had to be compressed.
So many standards were invented since then:
Compression in MPEG2, in H.264, in H.265, VP9 and many, many more.
The compressed pictures had to be packed as a video stream in a container, which contains the video stream and one or even more audio streams.
There were many containers for that purpose:
VOB, AVI, MOV, MP4, MKV and many more.
The container VOB was defined and used for Video DVD. The defined standard is: Only 720x480 pixels (NTSC) and more than one audio stream (for the different languages) and subtitles. Because of organizing, the VOB is just 1GB in size. When it was invented, 1GB was very huge. For combining them in a player, the player must know, which VOB belongs to what it has to play (menu, video, bonus material, all that was a VOB). That information was written in a file with the extension IFO. So the player read the IFO file and knew, what it has to play.
Nowadays, DVD is not dead, but not the recommended format. After the DVD-format came HD. It is 1280x720 pixels or even 1920x1080 pixels (FullHD). As a data disc for that really big pictures in good quality, the BlueRay was invented. A single sided BlueRay can hold 25GB of Data. But not in a VOB container. The container for BlueRay is a M2TS container. And the BlueRay standard allowed a newer compression for the pictures: H.264. Better quality with lower file size. But there was no need to use a disc as storage, the harddisks of the computers became bigger and cheaper, so a new container format was invented for the H.264 encoded video stream: MP4. That container was defined for 1 video stream and 1 audio stream. And there was no need to slice the video stream into pieces. The video was hold in just one file. That file can be 100GB or more in size. Just one file. A more sophisticated container for H.264 compressed video was MKV (Matroska). MKV can hold one video stream and more than one audio streams. Also in just one big file. Some camcorders have SDCards, that have an older format. Files cannot be bigger than 4GB. So the files are sliced in 4GB pieces. PowerDirector can of course join those pieces to a big file.
Today, the resolution is ready for 4K (UltraHD): 3840x2160 pixels ( double width and double hights of FullHD). Even more data for one picture. But H.264 can still compress it good. But even better is a newer compression: H.265. That makes the files smaller with the same quality as H.264.
Youtube takes a video clip in upload and compresses it in H.264, I think, maybe in H.265. No matter what you do, youtube does convert your uploaded video. But it must be one file. Youtube does not combine video clips.
So, as a conclusion:
Have a look, what resolution your source footage has.
Produce your video clips as H.264(AVC) or H.265(HEVC) in a MP4 container. As I said, don't be so stingy with the bitrate, the bitrate makes the quality. For producing, choose a resolution which is not bigger than your source footage. It is not meaningful to have a FullHD source footage and produce it to 3840x2160. But if you have 4K footage, it can be produced as 1920x1080 very nicely.
What you get is a more or less big file with the extension MP4. That is your ready video clip. You do not need to make a DVD video out of it. Upload the MP4 to youtube and you will get the desired result. BUT: MP4 or MKV or any other container contains only video and audio. There is no menu. That is not possible. So Youtube videos do not have a menu. Never.
Hatti
I hope, that was not to didactic.
Win 10 64, i7-4790k, 32GB Ram, 256 GB SSD, SATA 2TB, SATA 4TB, NVidia GTX1080 8GB, LG 34" 4K Wide, AOC 24" 1080