optimal specification/settings for creating or converting a video for different platforms
Posted on 2013-10-23
We are in the process to design and develop video lessons (educational content such as for K-12). Our video lessons contain images, illustrated graphics, simple animations with voice over. Our video lessons also contain digital writing clips (by using screen recording software, touch tablets and digital pen we create these video files/clips and then insert/add in the main video lesson). We are using Adobe suite to design and develop our video lessons. Recorded lessons, user only view them in the web site. Not to
download and then view. Specific local curriculum based video lessons in local language.
Then we are planning to publish/deliver these video lessons on different platforms such as(web portal, CD/DVD, on standalone computer or local network in a class setting using Projector, smart phones, tablet PCs).
Now while we are designing these video lessons we like to know the following:
1) What are the best video file types according to different distribution platform/devices, such as (web portal, CD/DVD, on standalone computer or local network in a class setting using Projector, smart phones, tablet PCs)
2) What suppose to be the appropriate size (frame height and frame width) of our original video file. Like before rendering or before any conversion to different video file types and to different sizes.
3) In the context of bandwidth what is the optimal specification/settings for creating/converting a video. Specifically what need to be the video codec, video size, video bit-rate, frame rate. Also for the audio options while we create/convert a video what is the optimal specification/settings for audio codec, audio bit-rate, sample rate. Basically looking for a better trade-off between quality and file size of any given video lesson.