[FFmpeg-user] Encoding 4K 60Hz lossless from a capture card

Carl Eugen Hoyos ceffmpeg at gmail.com
Thu Dec 14 10:25:55 EET 2017

2017-12-13 3:39 GMT+01:00 Alex Pizzi <alex.p at avenview.com>:

> ffmpeg.exe -f dshow -video_size 3840x2160 -framerate 30 -pixel_format bgr24
> -rtbufsize INT_MAX -i video="MZ0380 PCI, Analog 01 Capture" -vf fps=30
> out%d.BMP

Complete, uncut console output missing.

Do you see the same errors when encoding to "-f null -"?

bmp encoding may not be lossless, hardware encoders do not
support h264 lossless and h265 lossless (afaik).

Carl Eugen

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