On Thu, 29 Apr 2021 09:21:52 +0200 Tobias Rapp <t.r...@noa-archive.com> wrote: > On 27.04.2021 20:38, David Niklas wrote: > > Hello, > > If I ffprobe an mp4 file I can see things like its bitrate and its > > resolution. But, I can't find what the quantization of the video is. > > > > How can I determine that? > > You can take a look at the pixel format (pix_fmt) value of the video > stream. To map the pixel format into bits-per-pixel use the table > printed by "ffprobe -pix_fmts". Or for more information about the pixel > formats including the bit-depth per components use "ffprobe > -show_pixel_formats -print_format json". > > Regards, > Tobias >
I have a rudimentary idea of what I need to do to get the value. Here are the relevant details: yuv420p 1074kb/s 1920x1080 29.97fps 00:22:09.20 FLAGS NAME NB_COMPONENTS BITS_PER_PIXEL IO... yuv420p 3 12 But when I try to come up with a useful value from that data I get a very large value. Much higher than the typical 24-60 or so for quantization that I see in files I encode. Have I gotten the formula correct? Size WxH BPP FPS Duration Bitrate (1920*1080*12*29.97*((22*60)+09.2))/1074000 Thanks, David _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
