On Tue, Aug 27, 2019 at 8:05 AM Michael Niedermayer <mich...@niedermayer.cc> wrote: > > On Sun, Aug 25, 2019 at 04:43:31PM -0700, Elliott Karpilovsky wrote: > > Current default is 200kbps, which produces inconsistent > > results (too high for low-res, too low for hi-res). Use > > CRF instead, which will adapt. Affects vp8/vp9. Also > > have VP8 use a default bitrate of 256kbps. > > --- > > libavcodec/libvpxenc.c | 71 +++++++++++++++++++++++++++++++++++------- > > 1 file changed, 60 insertions(+), 11 deletions(-) > > breaks: > ./ffmpeg -i mm.mpg -vcodec libvpx-vp9 -lossless 1 -vframes 1 -an > vpx-lossless.mkv > ... > [libvpx-vp9 @ 0x2ed9080] Neither bitrate nor constrained quality specified, > using default CRF of 32 > [libvpx-vp9 @ 0x2ed9080] CQ level 32 must be between minimum and maximum > quantizer value (0-0) > Error initializing output stream 0:0 -- Error while opening encoder for > output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width > or height > Conversion failed! >
Thanks for catching this. I will send an updated patch that accounts for lossless mode. I checked and didn't see any other options that could cause problems. If I missed any others, please let me know. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
