parameter star_number not working

[mweber]

Summary of the bug: star_number not working
How to reproduce: I have a number of image files I want to convert into a ProRes video. Image files are named "slowDownX4_02699.tif" up to "slowDownX4_03030.tif".

"C:\Program Files (x86)\ffmpeg\bin\ffmpeg.exe" -framerate 24 -f image2 -i "slowDownX4_%%05d.tif" -start_number 2699 -vcodec prores -profile:v 3 -an "slowdownX4.mov"

ffmpeg version 3.2.2
built of download is ffmpeg-20161230-6993bb4-win64-static

Error: Could find no file with path 'slowDownX4_%05d.tif' and index in the range 0-4
slowDownX4_%05d.tif: No such file or directory

The call produces an error. If I rename the tif files to start at 00000 and leave out the start_number parameter everything works as expected.
I also tried different formats, names in small caps, less digits, higher start_number and more, but the problem stays the same.

Complete output:
ffmpeg version N-82966-g6993bb4 Copyright (c) 2000-2016 the FFmpeg developers

built with gcc 5.4.0 (GCC)
configuration: --enable-gpl --enable-version3 --enable-dxva2 --enable-libmfx -

-enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei
0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-li
bbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --en
able-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-li
bopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --e
nable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc
--enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable
-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --e
nable-lzma --enable-decklink --enable-zlib

libavutil 55. 43.100 / 55. 43.100
libavcodec 57. 70.100 / 57. 70.100
libavformat 57. 61.100 / 57. 61.100
libavdevice 57. 2.100 / 57. 2.100
libavfilter 6. 68.100 / 6. 68.100
libswscale 4. 3.101 / 4. 3.101
libswresample 2. 4.100 / 2. 4.100
libpostproc 54. 2.100 / 54. 2.100

[image2 @ 00000000005c7fc0] Could find no file with path 'slowDownX4_%05d.tif' a
nd index in the range 0-4
slowDownX4_%05d.tif: No such file or directory

[Carl Eugen Hoyos]

-start_number is an input parameter, do not pass it as an output parameter.

[mweber]

that is exactly what i'm doing..
i have images (=input) to be converted to ProRes video (=output).
-start_number is required to start at the right input image.

[Carl Eugen Hoyos]

The input option -start_number cannot work if you pass it as an output parameter as in your command line.
Please post all usage questions on the user mailing list, this is a bug tracker.