2018-01-23 11:09 GMT+01:00 Katherine Frances <[email protected]>: > Further, if the specs for the output streams are not explicitly set by the > user, how does FFmpeg 'decide' what codec & options etc to use?
It tries hard... > The docs say: > >> the filtering system will automatically select a common pixel format >> for video streams, and a common sample format, sample rate and >> channel layout for audio streams, but other settings, such as >> resolution, must be converted explicitly by the user. > > but I don't find the wording isn't very clear. From my tests, it seems to > default to something similar to the specs of the lower-quality input? Please provide the command line you tested together with the complete, uncut console output. (The logic for selecting the pix_fmt cannot be clairvoyant, so it cannot always find the best solution, the format filter exists. Or are you not referring to the pix_fmt?) Carl Eugen _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
