Please help, what parameters do I need to write in ffmpeg to transcode from xvac to avchd?
When changing fps and bitrate, in Premiere everything works very slow, with avchd files works very fast
-c:v libx264 -preset medium -profile high -level 4.2 -b:v 26624K -minrate 26624K -maxrate 26624K -bufsize 53248K -nal-hrd cbr -pix_fmt yuv420p -r 50 -c:a ac3 -b:a 256K

XAVC
Format : XAVC
Codec ID : XAVC (XAVC/mp42/iso2)
File size : 112 MiB
Duration : 14 s 880 ms
Overall bit rate mode : Variable
Overall bit rate : 63.2 Mb/s

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.1
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, RefFrames : 2 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Bit rate mode : Variable
Bit rate : 58.9 Mb/s
Maximum bit rate : 60.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 100.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0

AVCHD
Format : BDAV
Format/Info : Blu-ray Video
Overall bit rate mode : Variable
Overall bit rate : 24.7 Mb/s
Maximum Overall bit rate : 28.0 Mb/s

Video
ID : 4113 (0x1011)
Menu ID : 1 (0x1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.2
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, RefFrames : 2 frames
Codec ID : 27
Bit rate mode : Variable
Bit rate : 23.5 Mb/s
Maximum bit rate : 26.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 50.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0