Hi Carl, thanks for the quick feedback. Indeed, I will try using the current FFmpeg git head then and I'll try reproducing your results.
Best, Stefano -----Original Message----- From: Libav-user [mailto:[email protected]] On Behalf Of Carl Eugen Hoyos Sent: Mittwoch, 31. August 2016 16:54 To: This list is about using libavcodec, libavformat, libavutil, libavdevice and libavfilter. Subject: Re: [Libav-user] Writing 16bit greyscale videos Hi! 2016-08-31 16:06 GMT+02:00 Masneri, Stefano <[email protected]>: > ffmpeg -i test%d.tif -vcodec ffv1 -b:v 2M -r 10 test.avi -b:v must not be used for lossless codecs such as ffv1. I don't know why you are using "-r 10" in this command line (it will not increase the duration of the output file, if this is what you wanted to achieve use the input option -framerate instead), so I left it out. I tested: $ ffmpeg -i test%d.tif -vcodec ffv1 out.avi $ ffmpeg -i test%d.tif -f crc - $ ffmpeg -i out.avi -f crc - Values are identical indicating that encoding and decoding 16bit gray (for the given samples) is indeed lossless. ffplay shows a black image (not green) Patched (!!) MPlayer also shows nothing green here > Command line output: > ffmpeg version 2.8.4 Copyright (c) 2000-2015 the FFmpeg developers I should probably have said this earlier: While I cannot reproduce an issue with FFmpeg 2.8 and the samples you provided, only current FFmpeg git head is supported here. Carl Eugen _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
