Premiere and format/codex!

i have been photographer (amateur) many years, , possibility use dlsr produce hd-video interest video has increased significantly.

 

in world of photography formats not many , raw format has simplified editing. but... world of video seems more complicated  , complex. not there formats there codex.

 

i have tried grasp information in subject available on internet. i'm more confused after reading before. there many contradictory 'holy grail' -truths out there.

 

we know it's idea save jpg files in tiff format while working picture avoid artefacts , when job done picture saved in jpg.

 

in world of digital video there similarity jpg in form of codex. understand many means encoding intermediate codex (less compressed) makes editing more efficient.  editing mean colour correction , grading. purpose of encoding rid of information don't need perceive clip , make file smaller of algorithms. possible obtain better 'raw' material editing decode less compressed codex?

 

i understand premiere import every format , codex timeline. premiere saving changes separate file , leave original footage until time export? beneficial import less compressed codex in premiere or speedgrade.

 

my main purpose save videos server , show videos on hdtv (1920x1080) . format/codex suggest? material avi, mpeg or mov.

 

i hope core of questions. not having english native language ***** tends many word. please bear me.

pr non-destructive editor, meaning not modify original footage , edits in native format. whatever during editing, saved in separate files , original not touched in way, other reading info. there no need use intermediate codecs, unless have underpowered computer or non-supported codec.

 

even when exporting, original material not modified in way, creates new material, based on original material. best codec purpose h.264.

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