[FFmpeg-trac] #7902(undetermined:new): GIF transparent frames overlapping

FFmpeg trac at avcodec.org
Wed May 15 11:30:25 EEST 2019


#7902: GIF transparent frames overlapping
-------------------------------------+-------------------------------------
             Reporter:  kolopo       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  gif,         |               Blocked By:
  overlap, encoding                  |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug: Transparent gifs are having frames overlap previous
 ones. If the stats mode is set as single then all frames will overlap the
 previous frames. If stats mode is full or diff then only the first frame
 will remain and be overlapped by each frame.

 How to reproduce:
 {{{
 % ffmpeg -v 9 -loglevel 99 -framerate 1 -i input%d.png -lavfi
 palettegen[pal],[0:v][pal]paletteuse output.gif
 ffmpeg version N-93851-gdcc999819d Copyright (c) 2000-2019 the FFmpeg
 developers
   built with gcc 8.3.1 (GCC) 20190414
   configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
 fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-
 libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
 --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
 --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-
 libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa
 --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx
 --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-
 nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
   libavutil      56. 27.100 / 56. 27.100
   libavcodec     58. 52.101 / 58. 52.101
   libavformat    58. 27.103 / 58. 27.103
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 51.100 /  7. 51.100
   libswscale      5.  4.101 /  5.  4.101
   libswresample   3.  4.100 /  3.  4.100
   libpostproc    55.  4.100 / 55.  4.100
 Splitting the commandline.
 Reading option '-v' ... matched as option 'v' (set logging level) with
 argument '9'.
 Reading option '-loglevel' ... matched as option 'loglevel' (set logging
 level) with argument '99'.
 Reading option '-framerate' ... matched as AVOption 'framerate' with
 argument '1'.
 Reading option '-i' ... matched as input url with argument 'input%d.png'.
 Reading option '-lavfi' ... matched as option 'lavfi' (create a complex
 filtergraph) with argument 'palettegen[pal],[0:v][pal]paletteuse'.
 Reading option 'output.gif' ... matched as output url.
 Finished splitting the commandline.
 Parsing a group of options: global .
 Applying option v (set logging level) with argument 9.
 Applying option lavfi (create a complex filtergraph) with argument
 palettegen[pal],[0:v][pal]paletteuse.
 Successfully parsed a group of options.
 Parsing a group of options: input url input%d.png.
 Successfully parsed a group of options.
 Opening an input file: input%d.png.
 Probing image2 score:100 size:0
 [image2 @ 00000260f636af40] Opening 'input1.png' for reading
 [file @ 00000260f636ed80] Setting default whitelist 'file,crypto'
 [AVIOContext @ 00000260f6376f40] Statistics: 5778 bytes read, 0 seeks
 [image2 @ 00000260f636af40] Opening 'input2.png' for reading
 [file @ 00000260f63788c0] Setting default whitelist 'file,crypto'
 [AVIOContext @ 00000260f6378a00] Statistics: 7702 bytes read, 0 seeks
 [image2 @ 00000260f636af40] Opening 'input3.png' for reading
 [file @ 00000260f6376f80] Setting default whitelist 'file,crypto'
 [AVIOContext @ 00000260f6378940] Statistics: 7906 bytes read, 0 seeks
 [image2 @ 00000260f636af40] Opening 'input4.png' for reading
 [file @ 00000260f63788c0] Setting default whitelist 'file,crypto'
 [AVIOContext @ 00000260f687b380] Statistics: 7554 bytes read, 0 seeks
 [image2 @ 00000260f636af40] Opening 'input5.png' for reading
 [file @ 00000260f6382700] Setting default whitelist 'file,crypto'
 [AVIOContext @ 00000260f63827c0] Statistics: 7634 bytes read, 0 seeks
 [image2 @ 00000260f636af40] rfps: 0.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 1.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 1.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 1.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 2.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 2.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 2.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 3.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 3.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 3.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 4.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 4.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 4.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 5.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 5.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 5.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 6.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 6.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 6.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 7.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 7.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 7.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 8.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 8.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 8.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 9.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 9.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 9.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 10.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 10.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 10.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 11.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 11.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 11.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 12.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 12.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 12.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 13.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 13.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 13.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 14.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 14.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 14.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 15.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 15.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 15.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 16.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 16.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 16.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 17.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 17.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 17.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 18.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 18.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 18.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 19.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 19.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 19.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 20.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 20.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 20.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 21.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 21.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 21.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 22.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 22.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 22.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 23.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 23.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 23.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 24.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 24.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 24.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 25.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 25.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 25.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 26.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 26.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 26.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 27.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 27.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 27.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 28.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 28.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 28.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 29.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 29.083333 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 29.916667 0.008681
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 30.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 31.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 32.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 33.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 34.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 35.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 36.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 37.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 38.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 39.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 40.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 41.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 42.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 43.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 44.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 45.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 46.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 47.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 48.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 49.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 50.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 51.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 52.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 53.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 54.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 55.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 56.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 57.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 58.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 59.000000 0.000000
 [image2 @ 00000260f636af40] rfps: 60.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 80.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 120.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 240.000000 0.000000
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 23.976024 0.000719
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 29.970030 0.001123
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 59.940060 0.004491
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 11.988012 0.000180
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 14.985015 0.000281
     Last message repeated 1 times
 [image2 @ 00000260f636af40] rfps: 47.952048 0.002874
     Last message repeated 1 times
 [image2 @ 00000260f636af40] stream 0: start_time: 0.000 duration: 5.000
 [image2 @ 00000260f636af40] format: start_time: 0.000 duration: 5.000
 bitrate=0 kb/s
 Input #0, image2, from 'input%d.png':
   Duration: 00:00:05.00, start: 0.000000, bitrate: N/A
     Stream #0:0, 5, 1/1: Video: png, 1 reference frame, rgba(pc), 500x500
 [SAR 3777:3777 DAR 1:1], 0/1, 1 fps, 1 tbr, 1 tbn, 1 tbc
 Successfully opened the file.
 Parsing a group of options: output url output.gif.
 Successfully parsed a group of options.
 Opening an output file: output.gif.
 [file @ 00000260f6379780] Setting default whitelist 'file,crypto'
 Successfully opened the file.
 detected 8 logical cores
 Stream mapping:
   Stream #0:0 (png) -> palettegen
   Stream #0:0 (png) -> paletteuse:default
   paletteuse -> Stream #0:0 (gif)
 Press [q] to stop, [?] for help
 cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)
     Last message repeated 5 times
 [graph 0 input from stream 0:0 @ 00000260f63cd200] Setting 'video_size' to
 value '500x500'
 [graph 0 input from stream 0:0 @ 00000260f63cd200] Setting 'pix_fmt' to
 value '26'
 [graph 0 input from stream 0:0 @ 00000260f63cd200] Setting 'time_base' to
 value '1/1'
 [graph 0 input from stream 0:0 @ 00000260f63cd200] Setting 'pixel_aspect'
 to value '3777/3777'
 [graph 0 input from stream 0:0 @ 00000260f63cd200] Setting 'sws_param' to
 value 'flags=2'
 [graph 0 input from stream 0:0 @ 00000260f63cd200] Setting 'frame_rate' to
 value '1/1'
 [graph 0 input from stream 0:0 @ 00000260f63cd200] w:500 h:500 pixfmt:rgba
 tb:1/1 fr:1/1 sar:3777/3777 sws_param:flags=2
 [graph 0 input from stream 0:0 @ 00000260f63cd580] Setting 'video_size' to
 value '500x500'
 [graph 0 input from stream 0:0 @ 00000260f63cd580] Setting 'pix_fmt' to
 value '26'
 [graph 0 input from stream 0:0 @ 00000260f63cd580] Setting 'time_base' to
 value '1/1'
 [graph 0 input from stream 0:0 @ 00000260f63cd580] Setting 'pixel_aspect'
 to value '3777/3777'
 [graph 0 input from stream 0:0 @ 00000260f63cd580] Setting 'sws_param' to
 value 'flags=2'
 [graph 0 input from stream 0:0 @ 00000260f63cd580] Setting 'frame_rate' to
 value '1/1'
 [graph 0 input from stream 0:0 @ 00000260f63cd580] w:500 h:500 pixfmt:rgba
 tb:1/1 fr:1/1 sar:3777/3777 sws_param:flags=2
 [format @ 00000260f6d76e80] Setting 'pix_fmts' to value
 'rgb8|bgr8|rgb4_byte|bgr4_byte|gray|pal8'
 [auto_scaler_0 @ 00000260f6d76b80] w:iw h:ih flags:'bilinear' interl:0
 [Parsed_palettegen_0 @ 00000260f63826c0] auto-inserting filter
 'auto_scaler_0' between the filter 'graph 0 input from stream 0:0' and the
 filter 'Parsed_palettegen_0'
 [auto_scaler_1 @ 00000260f63d46c0] w:iw h:ih flags:'bilinear' interl:0
 [Parsed_paletteuse_1 @ 00000260f6376f40] auto-inserting filter
 'auto_scaler_1' between the filter 'graph 0 input from stream 0:0' and the
 filter 'Parsed_paletteuse_1'
 [AVFilterGraph @ 00000260f6378880] query_formats: 6 queried, 3 merged, 2
 already done, 0 delayed
 [swscaler @ 00000260f63f18c0] Forcing full internal H chroma due to input
 having non subsampled chroma
 [auto_scaler_1 @ 00000260f63d46c0] w:500 h:500 fmt:rgba sar:3777/3777 ->
 w:500 h:500 fmt:bgra sar:1/1 flags:0x2
 [swscaler @ 00000260f6406fc0] Forcing full internal H chroma due to input
 having non subsampled chroma
 [auto_scaler_0 @ 00000260f6d76b80] w:500 h:500 fmt:rgba sar:3777/3777 ->
 w:500 h:500 fmt:bgra sar:1/1 flags:0x2
 [Parsed_paletteuse_1 @ 00000260f6376f40] [framesync @ 00000260f6cf4c48]
 Selected 1/1 time base
 [Parsed_paletteuse_1 @ 00000260f6376f40] [framesync @ 00000260f6cf4c48]
 Sync level 2
 Output #0, gif, to 'output.gif':
   Metadata:
     encoder         : Lavf58.27.103
     Stream #0:0, 0, 1/100: Video: gif, 1 reference frame, pal8, 500x500
 [SAR 1:1 DAR 1:1], 0/1, q=2-31, 200 kb/s, 1 fps, 100 tbn, 1 tbc (default)
     Metadata:
       encoder         : Lavc58.52.101 gif
 cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)
 [swscaler @ 00000260f6406fc0] Forcing full internal H chroma due to input
 having non subsampled chroma
 [auto_scaler_0 @ 00000260f6d76b80] w:500 h:500 fmt:rgba sar:3779/3779 ->
 w:500 h:500 fmt:bgra sar:1/1 flags:0x2
 [swscaler @ 00000260f63f18c0] Forcing full internal H chroma due to input
 having non subsampled chroma
 [auto_scaler_1 @ 00000260f63d46c0] w:500 h:500 fmt:rgba sar:3779/3779 ->
 w:500 h:500 fmt:bgra sar:1/1 flags:0x2
 cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)
 [swscaler @ 00000260f6406fc0] Forcing full internal H chroma due to input
 having non subsampled chroma
 [auto_scaler_0 @ 00000260f6d76b80] w:500 h:500 fmt:rgba sar:3778/3778 ->
 w:500 h:500 fmt:bgra sar:1/1 flags:0x2
 [swscaler @ 00000260f63f18c0] Forcing full internal H chroma due to input
 having non subsampled chroma
 [auto_scaler_1 @ 00000260f63d46c0] w:500 h:500 fmt:rgba sar:3778/3778 ->
 w:500 h:500 fmt:bgra sar:1/1 flags:0x2
 cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)
 [swscaler @ 00000260f6406fc0] Forcing full internal H chroma due to input
 having non subsampled chroma
 [auto_scaler_0 @ 00000260f6d76b80] w:500 h:500 fmt:rgba sar:3779/3779 ->
 w:500 h:500 fmt:bgra sar:1/1 flags:0x2
 [swscaler @ 00000260f63f18c0] Forcing full internal H chroma due to input
 having non subsampled chroma
 [auto_scaler_1 @ 00000260f63d46c0] w:500 h:500 fmt:rgba sar:3779/3779 ->
 w:500 h:500 fmt:bgra sar:1/1 flags:0x2
 cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)
 [swscaler @ 00000260f6406fc0] Forcing full internal H chroma due to input
 having non subsampled chroma
 [auto_scaler_0 @ 00000260f6d76b80] w:500 h:500 fmt:rgba sar:3778/3778 ->
 w:500 h:500 fmt:bgra sar:1/1 flags:0x2
 [swscaler @ 00000260f63f18c0] Forcing full internal H chroma due to input
 having non subsampled chroma
 [auto_scaler_1 @ 00000260f63d46c0] w:500 h:500 fmt:rgba sar:3778/3778 ->
 w:500 h:500 fmt:bgra sar:1/1 flags:0x2
 cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)
 [Parsed_palettegen_0 @ 00000260f63826c0] 255(+1) colors generated out of
 269 colors; ratio=0.947955
 [Parsed_palettegen_0 @ 00000260f63826c0] Dupped color: FF000000
 cur_dts is invalid st:0 (0) [init:1 i_done:0 finish:0] (this is harmless
 if it occurs once at the start per stream)
 Clipping frame in rate conversion by 0.000008
 [gif @ 00000260f637cc80] 304x63 image at pos (98;413) [area:500x500]
 [gif @ 00000260f637cc80] 303x63 image at pos (106;135) [area:500x500]
 [gif @ 00000260f637cc80] 306x62 image at pos (97;43) [area:500x500]
 [gif @ 00000260f637cc80] 303x62 image at pos (91;303) [area:500x500]
 [Parsed_paletteuse_1 @ 00000260f6376f40] [framesync @ 00000260f6cf4c48]
 Sync level 0
 [out_0_0 @ 00000260f63cd740] EOF on sink link out_0_0:default.
 No more output streams to write to, finishing.
 frame=    5 fps=0.0 q=-0.0 Lsize=      22kB time=00:00:04.01 bitrate=
 44.0kbits/s speed=36.8x
 video:22kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.090843%
 Input file #0 (input%d.png):
   Input stream #0:0 (video): 5 packets read (36574 bytes); 5 frames
 decoded;
   Total: 5 packets (36574 bytes) demuxed
 Output file #0 (output.gif):
   Output stream #0:0 (video): 5 frames encoded; 5 packets muxed (22016
 bytes);
   Total: 5 packets (22016 bytes) muxed
 5 frames successfully decoded, 0 decoding errors
 [AVIOContext @ 00000260f637da00] Statistics: 0 seeks, 1 writeouts
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7902>
FFmpeg <https://ffmpeg.org>
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