Q
QC 2.0
The video disc's production size is primarily decided by the total time length but not the file size of the source video files you added for disc burning.
If the estimated file size of the disc keeps showing exceeded, it indicates you have to shorten or trimmed your videos to make the time length of your project much shorter.
No offense, but don't even think about adding hours of video for burning on a DVD disc. It is not possible unless you only want the DVD disc encode the videos in extremely terrible (close to not watchable) quality by using the SmartFit profile.
The old fashion DVD specification so as Blu-ray disc applies low-compression and less efficient MPEG-2 codec to encode the videos on disc, they cannot store relatively long length of videos.
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Elaine B.
QC 2.0 , I agree that a DVD disc holds very little (although the OP might want to try a Double Layer DVD if his files are between 5 and 8 GB) and the quality is not great.
But I am confused by your sentence "The old fashion DVD specification so as Blu-ray disc" . Did you mean to type "such as Blu-ray disc" instead? If so, it sounds like you're saying that Blu-ray has to use MPEG-2 but that's not correct. I burn to Blu-ray all the time with PowerDirector 20 Ultimate, and in HD (1080p). Video codec is AVC-1 and the format is MPEG-4.
For example, I burned a Blu-ray last month that has three videos on it. The individual files, as per MediaInfo, show that one is 40 mins/11.3 GB, one is 12 mins/3.25 GB, and one is 57 mins/13.6 GB. Burned to a regular 25GB Blu-ray using MPEG-4.
Of course, if the OP doesn't have a Blu-ray burner they don't have that option.
Q
QC 2.0
Elaine B. Yes, you can burn a Blu-ray video disc using AVC (H.264) codec, but most of commercial Blu-ray discs still use MPEG-2 codec to encode the video content for the best playback compatibility with all standalone Blu-ray disc players.
The spec of Blu-ray discs has some details that most of regular users don't know at all nowadays.
And, a Blu-ray video disc's video container is definitely not MP4 format.
The disc is composed with a series of folders and Blu-ray metadata files, and the video container is .m2ts.
Add a MP4 video file and burn it on a Blu-ray blank disc is not equal to making the disc a Blu-ray video disc, but just a Blu-ray disc that stores a video file. The burned disc is still in data disc form factor but not a video disc technically.
Some Blu-ray players might support the playback of MP4 video files on a Blu-ray/DVD disc, but the playback won't contain any video disc menu because the disc is not a video disc actually.
OG video disc fans will know what I'm talking about.
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Elaine B.
QC 2.0 , that is very interesting. Although I'm now puzzled about your next-to-last paragraph. I play my burned-to-Verbatim-blu-ray discs in my Sony blu-ray player (connected to tv) and also in my LG blu-ray writer/player (connected to desktop computer) regularly, and all of them have a menu because they all contain multiple MP4 videos -- usually three per blu-ray disc but occasionally as many as four. And all produced using PowerDirector 20 Ultimate.
Also, when you say "commercial Blu-Ray discs" are you talking about the disc that, for example, the latest Disney movie release on physical media comes on? Or about the blank discs made by Verbatim or other blank-media companies?