On 24/11/14 12:12 PM, Benoit Fouet wrote: > In order to support multiple IDAT of fdAT chunks following an fcTL one, > transmit all the chunks between two fcTL ones (or between fcTL and IEND > one).
Using one of the samples from https://people.mozilla.org/~dolske/apng/demo.html $ ./ffmpeg -i chompy2.png chompy2.mp4 -loglevel debug [...] Input #0, apng, from 'chompy2.png': Duration: N/A, bitrate: N/A Stream #0:0: Video: apng, rgba, 166x120, 14.58 fps, 10 tbr, 90k tbn, 90k tbc Output #0, mp4, to 'chompy2.mp4': Metadata: encoder : Lavf56.15.100 Stream #0:0, 0, 1/10240: Video: mpeg4 ( [0][0][0] / 0x0020), yuv420p, 166x120, 1/10, q=2-31, 200 kb/s, 10 fps, 10240 tbn, 10 tbc Metadata: encoder : Lavc56.13.100 mpeg4 Stream mapping: Stream #0:0 -> #0:0 (apng (native) -> mpeg4 (native)) Press [q] to stop, [?] for help *** dropping frame 8 from stream 0 at ts 5 *** dropping frame 10 from stream 0 at ts 7 *** dropping frame 12 from stream 0 at ts 9 *** dropping frame 14 from stream 0 at ts 11 [output stream 0:0 @ 0000000000317a20] EOF on sink link output stream 0:0:default. No more output streams to write to, finishing. frame= 16 fps=0.0 q=2.3 Lsize= 64kB time=00:00:01.60 bitrate= 328.6kbits/s dup=0 drop=5 video:63kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.433775% Input file #0 (chompy2.png): Input stream #0:0 (video): 21 packets read (288248 bytes); 21 frames decoded; Total: 21 packets (288248 bytes) demuxed Output file #0 (chompy2.mp4): Output stream #0:0 (video): 16 frames encoded; 16 packets muxed (64794 bytes); Total: 16 packets (64794 bytes) muxed 23 frames successfully decoded, 0 decoding errors I fixed this by using time_base instead of r_frame_rate in decode_fctl_chunk, but i'm not sure if that's correct either because it's changed after reading every frame, and in this one apng file the last frame has a different delay_den and delay_num values than in every previous frame. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
