Changes between Version 74 and Version 75 of HWAccelIntro


Ignore:
Timestamp:
Nov 18, 2020, 12:53:52 AM (2 weeks ago)
Author:
varenc
Comment:

add a few helpful notes about VideoToolbox?

Legend:

Unmodified
Added
Removed
Modified
  • HWAccelIntro

    v74 v75  
    113113= !VideoToolbox =
    114114
    115 [https://developer.apple.com/documentation/videotoolbox VideoToolbox], only supported on macOS. H.264 decoding is available in FFmpeg/libavcodec.
     115[https://developer.apple.com/documentation/videotoolbox VideoToolbox], only supported on macOS. H.264 decoding is available in FFmpeg/libavcodec.
     116
     117To use hardware encoding in macOS, just use the encoder `-c:v h264_videotoolbox` or `-c:v hevc_videotoolbox` for H.264 or HEVC respectively. Check `ffmpeg -h encoder=...` to see encoder options. It's worth noting that !VideoToolbox does not support constant quality (CRF) encoding.  Bit rate, `-b:v ...`, is your main lever to balance size vs quality. 
     118
    116119
    117120= CUDA(NVENC/NVDEC) =