hello everyone,
also you could try these settings in compressor to achieve better results
1. export 1920×1080 apple prores 422 hq movie file from FCPX
2. then use the following settings to downconvert HD to SD sizes with good results
File Extension: mov
Estimated size:
Time remapping:
source frames play at 25.000 fps
Audio Encoder
16-bit Integer (Big Endian), Stereo (L R), 48.000 kHz
Video Encoder
Width: 720
Height: 405
Pixel aspect ratio: Square
Crop to: Letterbox area of source
Padding: Preserve source aspect ratio
(L: 0, T: 0, R: 0, B: 0)
Frame rate: (100% of source)
Selected: 25
Frame Controls: Automatically selected: Off
Codec Type: Apple ProRes 422 (HQ)
Multi-pass: Off, frame reorder: Off
No gamma correction
Interlaced (top field first)
Pixel depth: 24
Spatial quality: 75
Min. Spatial quality: 0
Temporal quality: 0
Min. temporal quality: 0
and also with deinterlace in filters/video set accordingly
it worked for me may be it will work for others too.