thanks for replying so quickly. in my case(ffmpeg 2.4.1), problem was decoder. i've solve the issue.
png did not decoded without flushing decoder which using avcodec_decode_video2 with NULL packet.(this flush code was in demuxing_ decoding example) with flushing decoder, finally it can decode png frame well. and as you said, in 2.4.2, it can decoded perfectly without 'Input/output error'. thanks :) On Tue, Oct 7, 2014 at 8:14 PM, Michael Niedermayer <michae...@gmx.at> wrote: > On Tue, Oct 07, 2014 at 04:36:50PM +0900, UrdnotFirebug wrote: > > Hi Michael.i'm using FFmpeg 2.4.1 built on gcc 4.4.7 > > please try with 2.4.2, there where several bugfixes in the png > handling > > [...] > -- > Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB > > Those who are best at talking, realize last or never when they are wrong. > -- *"You never know how strong you are until being strong is the only option you have left."* _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel