On 3/27/17, Paul B Mahol <one...@gmail.com> wrote: > On 3/27/17, Mark Reid <mindm...@gmail.com> wrote: >> On Mon, Mar 27, 2017 at 11:08 AM, Paul B Mahol <one...@gmail.com> wrote: >> >>> Signed-off-by: Paul B Mahol <one...@gmail.com> >>> --- >>> libavcodec/dnxhdenc.c | 227 ++++++++++++++++++++++++++++++ >>> +++++--------------- >>> libavcodec/dnxhdenc.h | 6 +- >>> 2 files changed, 163 insertions(+), 70 deletions(-) >>> > > [...] > >>> + case AV_PIX_FMT_YUV444P10: >>> + case AV_PIX_FMT_GBRP10: >>> + ctx->bit_depth = 10; >>> >> >> Am I missing something, I thought the dnxhr HQX and 444 profiles were >> 12bit? >> http://avid.force.com/pkb/articles/en_US/White_Paper/DNxHR-Codec-Bandwidth-Specifications >> > > They are both 10 and 12 bit. > >> I get a failed Assertion here, >> >> Assertion nbits < ctx->bit_depth + 4 failed at libavcodec/dnxhdenc.c:837 >> when I try the following command >> ./ffmpeg_g -y -f rawvideo -video_size 2048x1556 -pixel_format yuv444p10 >> -i >> /dev/urandom \ >> -loglevel debug \ >> -vframes 5 \ >> -profile:v "dnxhr_444" \ >> -vcodec dnxhd \ >> -pix_fmt yuv444p10 \ >> test.mov >> > > What could be cause of that? If I try to avoid that I get ratecontrol > error.
Actually that command is invalid as it passes > (2^10 - 1) values to video frame. Use geq="lum=random(x)*1023:cb=random(y):cr=random(z)*1023" instead. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
