I m getting this error while encoding

[rockydon]

[Warning] [10/6/2017 10:52:10 PM] Standard error stream
---[Information] [10/6/2017 10:52:12 PM] raw [info]: 1920x800p 415:414 @ 24000/1001 fps (cfr)
---[Information] [10/6/2017 10:52:12 PM] x264 [info]: using SAR=415/414
---[Warning] [10/6/2017 10:52:12 PM] x264 [warning]: VBV bitrate (62500) > level limit (50000)
---[Warning] [10/6/2017 10:52:12 PM] x264 [warning]: VBV buffer (78125) > level limit (62500)

i m new to this terms,can someone tell me how to improve this part

this is my script here

---[NoImage] LoadPlugin("C:\Desktop\Code\tools\ffms\ffms2.dll")
---[NoImage] FFVideoSource("H:\The\00001 - 2 - h264, 1080p24.mkv", fpsnum=24000, fpsden=1001, threads=1)
---[NoImage] #deinterlace
---[NoImage] crop(0, 140, 0, -142)
---[NoImage] Spline36Resize(1920,800) # Spline36 (Neutral)
---[NoImage] Sharpen(0.22)
---[NoImage] #denoise
---[NoImage] ConvertToYV12()

[sneaker_ger]

---[Information] [10/6/2017 10:52:12 PM] x264 [info]: using SAR=415/414
415/414 is almost 1 so I would set --sar 1:1.

---[Warning] [10/6/2017 10:52:12 PM] x264 [warning]: VBV bitrate (62500) > level limit (50000)
---[Warning] [10/6/2017 10:52:12 PM] x264 [warning]: VBV buffer (78125) > level limit (62500)
Is this the first of multiple passes? Then simply ignore the warning message.