progressの値が異常に高くなる場合がある

変換しようとしたpdf
https://s3.amazonaws.com/gran-turismo.com/pdi_publications/GDC2023_GT7_SKY_RENDERING.pdf
設定スクリーンショット 2024-05-20 015734
このスライドと設定の場合、必要なフレーム数は268枚2sec30fps=16080framesだと思うのでログ出力時点では20%程度しか終わっていないはずだが、progressは1000%を超えている
出力されたログ
[pdf] GDC2023_GT7_SKY_RENDERING.pdf
[stderr] ffmpeg version 5.1.3 Copyright (c) 2000-2022 the FFmpeg developers
[stderr]   built with emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.40 (5c27e79dd0a9c4e27ef2326841698cdd4f6b5784)
[stderr]   configuration: --target-os=none --arch=x86_32 --enable-cross-compile --disable-asm --disable-stripping --disable-programs --disable-doc --disable-debug --disable-runtime-cpudetect --disable-autodetect --nm=emnm --ar=emar --ranlib=emranlib --cc=emcc --cxx=em++ --objcc=emcc --dep-cc=emcc --extra-cflags='-I/opt/include -O3 -msimd128' --extra-cxxflags='-I/opt/include -O3 -msimd128' --disable-pthreads --disable-w32threads --disable-os2threads --disable-all --enable-gpl --enable-libx264 --enable-libvpx --enable-zlib --enable-avcodec --enable-avformat --enable-avfilter --enable-swscale --enable-decoder=png --enable-encoder='png,libvpx_vp8,libx264' --enable-parser='vp8,h264,png' --enable-protocol=file --enable-demuxer=image2 --enable-muxer='mp4,webm' --enable-filter='scale,format,null'
[stderr]   libavutil      57. 28.100 / 57. 28.100
[stderr]   libavcodec     59. 37.100 / 59. 37.100
[stderr]   libavformat    59. 27.100 / 59. 27.100
[stderr]   libavfilter     8. 44.100 /  8. 44.100
[stderr]   libswscale      6.  7.100 /  6.  7.100
[stderr] Input #0, image2, from 'page*.png':
[stderr]   Duration: 00:00:10.72, start: 0.000000, bitrate: N/A
[stderr]   Stream #0:0: Video: png, rgba(pc), 1556x1080, 25 fps, 25 tbr, 25 tbn
[stderr] Stream mapping:
[stderr]   Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
[stderr] [libx264 @ 0x1af050] using cpu capabilities: none!
[stderr] [libx264 @ 0x1af050] profile High, level 4.0, 4:2:0, 8-bit
[stderr] [libx264 @ 0x1af050] 264 - core 164 - H.264/MPEG-4 AVC codec - Copyleft 2003-2022 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=1 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[stderr] Output #0, mp4, to 'result.mp4':
[stderr]   Metadata:
[stderr]     encoder         : Lavf59.27.100
[stderr]   Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv420p(tv, progressive), 1556x1080, q=2-31, 30 fps, 15360 tbn
[stderr]     Metadata:
[stderr]       encoder         : Lavc59.37.100 libx264
[stderr]     Side data:
[stderr]       cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
[progress] 0.00% done
[stderr] frame=    1 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=N/A    
[progress] 23.94% done
[stderr] frame=  121 fps= 40 q=29.0 size=       0kB time=00:00:02.56 bitrate=   0.1kbits/s dup=118 drop=0 speed=0.855x    
[progress] 42.60% done
[stderr] frame=  181 fps= 18 q=29.0 size=     256kB time=00:00:04.56 bitrate= 459.3kbits/s dup=177 drop=0 speed=0.465x    
[progress] 61.26% done
[stderr] frame=  241 fps= 15 q=29.0 size=     256kB time=00:00:06.56 bitrate= 319.4kbits/s dup=236 drop=0 speed=0.399x    
[progress] 79.91% done
[stderr] frame=  301 fps= 13 q=29.0 size=     256kB time=00:00:08.56 bitrate= 244.8kbits/s dup=295 drop=0 speed=0.383x    
[progress] 98.57% done
[stderr] frame=  361 fps= 13 q=29.0 size=     512kB time=00:00:10.56 bitrate= 397.0kbits/s dup=354 drop=0 speed=0.372x    
[progress] 117.23% done
[stderr] frame=  421 fps= 12 q=29.0 size=     512kB time=00:00:12.56 bitrate= 333.8kbits/s dup=413 drop=0 speed=0.363x    
[progress] 135.88% done
[stderr] frame=  481 fps= 12 q=29.0 size=     768kB time=00:00:14.56 bitrate= 431.9kbits/s dup=472 drop=0 speed=0.36x    
[progress] 154.54% done
[stderr] frame=  541 fps= 12 q=29.0 size=     768kB time=00:00:16.56 bitrate= 379.8kbits/s dup=531 drop=0 speed=0.353x    
[progress] 173.20% done
[stderr] frame=  601 fps= 11 q=29.0 size=    1024kB time=00:00:18.56 bitrate= 451.8kbits/s dup=590 drop=0 speed=0.352x    
[progress] 191.85% done
[stderr] frame=  661 fps= 11 q=29.0 size=    1024kB time=00:00:20.56 bitrate= 407.9kbits/s dup=649 drop=0 speed=0.352x    
[progress] 210.51% done
[stderr] frame=  721 fps= 11 q=29.0 size=    1024kB time=00:00:22.56 bitrate= 371.7kbits/s dup=708 drop=0 speed=0.348x    
[progress] 229.17% done
[stderr] frame=  781 fps= 11 q=29.0 size=    1280kB time=00:00:24.56 bitrate= 426.8kbits/s dup=767 drop=0 speed=0.346x    
[progress] 247.82% done
[stderr] frame=  841 fps= 11 q=29.0 size=    1280kB time=00:00:26.56 bitrate= 394.7kbits/s dup=826 drop=0 speed=0.346x    
[progress] 266.48% done
[stderr] frame=  901 fps= 11 q=29.0 size=    1280kB time=00:00:28.56 bitrate= 367.1kbits/s dup=885 drop=0 speed=0.344x    
[progress] 285.14% done
[stderr] frame=  961 fps= 11 q=29.0 size=    1280kB time=00:00:30.56 bitrate= 343.1kbits/s dup=944 drop=0 speed=0.343x    
[stderr] More than 1000 frames duplicated
[progress] 303.79% done
[stderr] frame= 1021 fps= 11 q=29.0 size=    1536kB time=00:00:32.56 bitrate= 386.4kbits/s dup=1003 drop=0 speed=0.342x    
[progress] 322.45% done
[stderr] frame= 1081 fps= 11 q=29.0 size=    1536kB time=00:00:34.56 bitrate= 364.0kbits/s dup=1062 drop=0 speed=0.341x    
[progress] 341.11% done
[stderr] frame= 1141 fps= 11 q=29.0 size=    1536kB time=00:00:36.56 bitrate= 344.1kbits/s dup=1121 drop=0 speed=0.341x    
[progress] 359.76% done
[stderr] frame= 1201 fps= 11 q=29.0 size=    1792kB time=00:00:38.56 bitrate= 380.7kbits/s dup=1180 drop=0 speed=0.34x    
[progress] 378.42% done
[stderr] frame= 1261 fps= 11 q=29.0 size=    1792kB time=00:00:40.56 bitrate= 361.9kbits/s dup=1239 drop=0 speed=0.338x    
[progress] 397.08% done
[stderr] frame= 1321 fps= 10 q=29.0 size=    1792kB time=00:00:42.56 bitrate= 344.9kbits/s dup=1298 drop=0 speed=0.338x    
[progress] 415.73% done
[stderr] frame= 1381 fps= 10 q=29.0 size=    2048kB time=00:00:44.56 bitrate= 376.5kbits/s dup=1357 drop=0 speed=0.337x    
[progress] 434.39% done
[stderr] frame= 1441 fps= 10 q=29.0 size=    2048kB time=00:00:46.56 bitrate= 360.3kbits/s dup=1416 drop=0 speed=0.335x    
[progress] 453.05% done
[stderr] frame= 1501 fps= 10 q=29.0 size=    2304kB time=00:00:48.56 bitrate= 388.6kbits/s dup=1475 drop=0 speed=0.335x    
[progress] 471.70% done
[stderr] frame= 1561 fps= 10 q=29.0 size=    2304kB time=00:00:50.56 bitrate= 373.3kbits/s dup=1534 drop=0 speed=0.336x    
[progress] 490.36% done
[stderr] frame= 1621 fps= 10 q=29.0 size=    2304kB time=00:00:52.56 bitrate= 359.1kbits/s dup=1593 drop=0 speed=0.335x    
[progress] 509.02% done
[stderr] frame= 1681 fps= 10 q=29.0 size=    2304kB time=00:00:54.56 bitrate= 345.9kbits/s dup=1652 drop=0 speed=0.335x    
[progress] 527.67% done
[stderr] frame= 1741 fps= 10 q=29.0 size=    2560kB time=00:00:56.56 bitrate= 370.7kbits/s dup=1711 drop=0 speed=0.334x    
[progress] 546.33% done
[stderr] frame= 1801 fps= 10 q=29.0 size=    2560kB time=00:00:58.56 bitrate= 358.1kbits/s dup=1770 drop=0 speed=0.333x    
[progress] 564.99% done
[stderr] frame= 1861 fps= 10 q=29.0 size=    2560kB time=00:01:00.56 bitrate= 346.3kbits/s dup=1829 drop=0 speed=0.333x    
[progress] 583.64% done
[stderr] frame= 1921 fps= 10 q=29.0 size=    2560kB time=00:01:02.56 bitrate= 335.2kbits/s dup=1888 drop=0 speed=0.332x    
[progress] 602.30% done
[stderr] frame= 1981 fps= 10 q=26.0 size=    2816kB time=00:01:04.56 bitrate= 357.3kbits/s dup=1947 drop=0 speed=0.331x    
[progress] 620.96% done
[stderr] frame= 2041 fps= 10 q=29.0 size=    2816kB time=00:01:06.56 bitrate= 346.6kbits/s dup=2006 drop=0 speed=0.33x    
[progress] 639.62% done
[stderr] frame= 2101 fps= 10 q=29.0 size=    2816kB time=00:01:08.56 bitrate= 336.4kbits/s dup=2065 drop=0 speed=0.33x    
[progress] 658.27% done
[stderr] frame= 2161 fps= 10 q=29.0 size=    2816kB time=00:01:10.56 bitrate= 326.9kbits/s dup=2124 drop=0 speed=0.33x    
[progress] 676.93% done
[stderr] frame= 2221 fps= 10 q=29.0 size=    2816kB time=00:01:12.56 bitrate= 317.9kbits/s dup=2183 drop=0 speed=0.33x    
[progress] 695.59% done
[stderr] frame= 2281 fps= 10 q=29.0 size=    3072kB time=00:01:14.56 bitrate= 337.5kbits/s dup=2242 drop=0 speed=0.33x    
[progress] 714.24% done
[stderr] frame= 2341 fps= 10 q=29.0 size=    3072kB time=00:01:16.56 bitrate= 328.7kbits/s dup=2301 drop=0 speed=0.329x    
[progress] 732.90% done
[stderr] frame= 2401 fps= 10 q=29.0 size=    3072kB time=00:01:18.56 bitrate= 320.3kbits/s dup=2360 drop=0 speed=0.329x    
[progress] 751.56% done
[stderr] frame= 2461 fps= 10 q=29.0 size=    3072kB time=00:01:20.56 bitrate= 312.4kbits/s dup=2419 drop=0 speed=0.329x    
[progress] 770.21% done
[stderr] frame= 2521 fps= 10 q=29.0 size=    3328kB time=00:01:22.56 bitrate= 330.2kbits/s dup=2478 drop=0 speed=0.329x    
[progress] 788.87% done
[stderr] frame= 2581 fps= 10 q=29.0 size=    3328kB time=00:01:24.56 bitrate= 322.4kbits/s dup=2537 drop=0 speed=0.328x    
[progress] 807.53% done
[stderr] frame= 2641 fps= 10 q=29.0 size=    3584kB time=00:01:26.56 bitrate= 339.2kbits/s dup=2596 drop=0 speed=0.328x    
[progress] 826.18% done
[stderr] frame= 2701 fps= 10 q=29.0 size=    3584kB time=00:01:28.56 bitrate= 331.5kbits/s dup=2655 drop=0 speed=0.328x    
[progress] 844.84% done
[stderr] frame= 2761 fps= 10 q=29.0 size=    3584kB time=00:01:30.56 bitrate= 324.2kbits/s dup=2714 drop=0 speed=0.328x    
[progress] 863.50% done
[stderr] frame= 2821 fps= 10 q=29.0 size=    3840kB time=00:01:32.56 bitrate= 339.8kbits/s dup=2773 drop=0 speed=0.327x    
[progress] 882.15% done
[stderr] frame= 2881 fps= 10 q=29.0 size=    3840kB time=00:01:34.56 bitrate= 332.7kbits/s dup=2832 drop=0 speed=0.327x    
[progress] 900.81% done
[stderr] frame= 2941 fps=9.9 q=29.0 size=    3840kB time=00:01:36.56 bitrate= 325.8kbits/s dup=2891 drop=0 speed=0.327x    
[progress] 919.47% done
[stderr] frame= 3001 fps=9.9 q=29.0 size=    4096kB time=00:01:38.56 bitrate= 340.4kbits/s dup=2950 drop=0 speed=0.326x    
[progress] 938.12% done
[stderr] frame= 3061 fps=9.9 q=29.0 size=    4096kB time=00:01:40.56 bitrate= 333.7kbits/s dup=3009 drop=0 speed=0.326x    
[progress] 956.78% done
[stderr] frame= 3121 fps=9.9 q=29.0 size=    4352kB time=00:01:42.56 bitrate= 347.6kbits/s dup=3068 drop=0 speed=0.325x    
[progress] 975.44% done
[stderr] frame= 3181 fps=9.9 q=29.0 size=    4352kB time=00:01:44.56 bitrate= 340.9kbits/s dup=3127 drop=0 speed=0.325x    
[progress] 994.09% done
[stderr] frame= 3241 fps=9.9 q=29.0 size=    4352kB time=00:01:46.56 bitrate= 334.6kbits/s dup=3186 drop=0 speed=0.325x    
[progress] 1012.75% done
[stderr] frame= 3301 fps=9.9 q=29.0 size=    4352kB time=00:01:48.56 bitrate= 328.4kbits/s dup=3245 drop=0 speed=0.325x    
[progress] 1031.41% done
[stderr] frame= 3361 fps=9.9 q=29.0 size=    4608kB time=00:01:50.56 bitrate= 341.4kbits/s dup=3304 drop=0 speed=0.325x    
[progress] 1050.06% done
[stderr] frame= 3421 fps=9.9 q=29.0 size=    4608kB time=00:01:52.56 bitrate= 335.3kbits/s dup=3363 drop=0 speed=0.325x    
[progress] 1068.72% done
[stderr] frame= 3481 fps=9.9 q=29.0 size=    4608kB time=00:01:54.56 bitrate= 329.5kbits/s dup=3422 drop=0 speed=0.325x    
[progress] 1087.38% done
[stderr] frame= 3541 fps=9.9 q=29.0 size=    4864kB time=00:01:56.56 bitrate= 341.8kbits/s dup=3481 drop=0 speed=0.325x    
[progress] 1106.03% done
[stderr] frame= 3601 fps=9.9 q=29.0 size=    4864kB time=00:01:58.56 bitrate= 336.1kbits/s dup=3540 drop=0 speed=0.325x    
[progress] 1124.69% done
[stderr] frame= 3661 fps=9.9 q=29.0 size=    4864kB time=00:02:00.56 bitrate= 330.5kbits/s dup=3599 drop=0 speed=0.325x
vrc-lt / pdf2webm

progressの値が異常に高くなる場合がある #25
