If I convert from yuv422p to yuvj422p get loss of quality?

[marcorocchini]

If I convert from yuv422p to yuvj422p get loss of quality?

[poisondeathray]

No additional losses . You still get the "normal" compression losses.

The "j" indicates that a flag is present that signals to the decoder what it should do with the data . No levels are actually changed in YUV=>YUV when converting with ffmpeg . It's when you see the data in RGB that something unexpected might happen

Recall your camera records 16-255 . In YUV, those 235-255 "overshoot" values are actually usable and record useful data. The normal RGB conversion (for display) maps Y' 16-235 , CbCr 16-240 to 0,0,0 - 255,255,255 in RGB values . If your editor works with a YUV timeline, those 235-255 values will still be accessible. But if you signal full range conversion, and the recieving program acknowledges that flag, you will get 0-255 YUV "mapped" to 0-255 RGB . This will preserve the superbrights but make picture look "washed out" as the black level will be elevated in RGB values. If your editor works in RGB , then that might be a good thing (you don't clip 235-255) . Otherwise it's normally a "bad" thing

[marcorocchini]

so ideal for my type of .mxf--> converted in yuvj422p avi files is hoewver the yuy2?

[poisondeathray]

I don't know. This program might be doing other intermediate steps in between . You would have to do some tests

YUY2 makes sense, and fielding should not say "no fielding" for interlace source