Hi! 2016-08-29 17:20 GMT+02:00 Masneri, Stefano <[email protected]>: >>From: Libav-user [mailto:[email protected]] On Behalf Of Carl >>Eugen Hoyos >>>2016-08-29 10:59 GMT+02:00 Masneri, Stefano <[email protected]>:
>>> Do you know of a codec that supports encoding a video using >>> AV_PIX_FMT_GRAY16BE pixel format (or anything similar)? >> >> jpegls, png, tiff, dpx, sgi, ffvhuff, ffv1 (all lossless) >> Jpeg2000, but FFmpeg needs the external library libopenjpeg for encoding >> gray16 (lossy or lossless) > > Thanks Carl. I am able to create the video with 16 bit greyscale images, > but when I try watching the video in VLC I only see a green image. Do you think this is an issue that can be fixed within FFmpeg? > Reading the frames one by one (with a simple class which uses FFmpeg) I see > a strange behaviour: every second column of the video is zero, while the other > are exactly as the input fed to the class that created the video. Is this issue reproducible with ffmpeg (the application)? > I guess there is somewhere a problem switching from uint16 to uint8, but I > cannot figure it out. Any hints? I may misunderstand but you get a uint8_t pointer that contains the exact 16bit data you originally encoded after decoding. Carl Eugen _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
