Hi, I am trying to simulate an input stream from the web (but on the local machine) as ffmpeg has a problem creating a gif from a mp4 using a stream, but only on some files.
cat .\a8ddbbcacc224b427f5b7ca14bdf41b692291730.MP4 | .\ffmpeg\bin\ffmpeg.exe -i pipe:0 -ss 3 -t 5 -f gif -vf scale=-1:120 -r 5 -y test.gif ffmpeg version N-91931-gb69ea742ab Copyright (c) 2000-2018 the FFmpeg developers built with gcc 7.3.0 (Rev2, Built by MSYS2 project) configuration: --disable-autodetect --enable-amf --enable-bzlib --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-iconv --enable-lzma --enable-nvenc --enable-zlib --enable-sdl2 --disable-debug --enable-ffnvcodec --enable-nvdec --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-fontconfig --enable-libass --enable-libbluray --enable-libfreetype --enable-libmfx --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libwavpack --enable-libwebp --enable-libxml2 --enable-libzimg --enable-libshine --enable-gpl --enable-avisynth --enable-libxvid --enable-libaom --enable-version3 --enable-chromaprint --enable-decklink --enable-frei0r --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libfdk-aac --enable-libflite --enable-libfribidi --enable-libgme --enable-libgsm --enable-libilbc --enable-libkvazaar --enable-libmodplug --enable-libopenh264 --enable-libopenmpt --enable-librtmp --enable-librubberband --enable-libssh --enable-libtesseract --enable-libxavs --enable-libzmq --enable-libzvbi --enable-opencl --enable-opengl --enable-libcodec2 --enable-libsrt --enable-ladspa --enable-openssl --extra-cflags=-fopenmp --extra-libs=-lgomp --extra-cflags=-DLIBTWOLAME_STATIC --extra-libs=-lstdc++ --extra-cflags=-DLIBSSH_STATIC --extra-ldflags='-Wl,--allow-multiple-definition' --extra-cflags=-DCACA_STATIC --extra-cflags=-DMODPLUG_STATIC --extra-cflags=-DCHROMAPRINT_NODLL --extra-libs=-lstdc++ --extra-cflags=-DZMQ_STATIC --extra-libs=-lpsapi --extra-cflags=-DLIBXML_STATIC --extra-libs=-liconv --disable-w32threads --extra-cflags=-DKVZ_STATIC_LIB --enable-nonfree libavutil 56. 19.101 / 56. 19.101 libavcodec 58. 30.100 / 58. 30.100 libavformat 58. 18.100 / 58. 18.100 libavdevice 58. 4.103 / 58. 4.103 libavfilter 7. 29.100 / 7. 29.100 libswscale 5. 2.100 / 5. 2.100 libswresample 3. 2.100 / 3. 2.100 libpostproc 55. 2.100 / 55. 2.100 [mov,mp4,m4a,3gp,3g2,mj2 @ 0a6dddc0] moov atom not found pipe:0: Invalid data found when processing input I have tried using the faststart command and running from the new file, however this also errors. .\ffmpeg\bin\ffmpeg.exe -i .\a8ddbbcacc224b427f5b7ca14bdf41b692291730.MP4 -c copy -map 0 -movflags faststart -y .\temp.MP4 cat .\temp.MP4 | .\ffmpeg\bin\ffmpeg.exe -i pipe:0 -ss 3 -t 5 -f gif -vf scale=-1:120 -r 5 -y test.gif ffmpeg version N-91931-gb69ea742ab Copyright (c) 2000-2018 the FFmpeg developers built with gcc 7.3.0 (Rev2, Built by MSYS2 project) configuration: --disable-autodetect --enable-amf --enable-bzlib --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-iconv --enable-lzma --enable-nvenc --enable-zlib --enable-sdl2 --disable-debug --enable-ffnvcodec --enable-nvdec --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-fontconfig --enable-libass --enable-libbluray --enable-libfreetype --enable-libmfx --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libwavpack --enable-libwebp --enable-libxml2 --enable-libzimg --enable-libshine --enable-gpl --enable-avisynth --enable-libxvid --enable-libaom --enable-version3 --enable-chromaprint --enable-decklink --enable-frei0r --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libfdk-aac --enable-libflite --enable-libfribidi --enable-libgme --enable-libgsm --enable-libilbc --enable-libkvazaar --enable-libmodplug --enable-libopenh264 --enable-libopenmpt --enable-librtmp --enable-librubberband --enable-libssh --enable-libtesseract --enable-libxavs --enable-libzmq --enable-libzvbi --enable-opencl --enable-opengl --enable-libcodec2 --enable-libsrt --enable-ladspa --enable-openssl --extra-cflags=-fopenmp --extra-libs=-lgomp --extra-cflags=-DLIBTWOLAME_STATIC --extra-libs=-lstdc++ --extra-cflags=-DLIBSSH_STATIC --extra-ldflags='-Wl,--allow-multiple-definition' --extra-cflags=-DCACA_STATIC --extra-cflags=-DMODPLUG_STATIC --extra-cflags=-DCHROMAPRINT_NODLL --extra-libs=-lstdc++ --extra-cflags=-DZMQ_STATIC --extra-libs=-lpsapi --extra-cflags=-DLIBXML_STATIC --extra-libs=-liconv --disable-w32threads --extra-cflags=-DKVZ_STATIC_LIB --enable-nonfree libavutil 56. 19.101 / 56. 19.101 libavcodec 58. 30.100 / 58. 30.100 libavformat 58. 18.100 / 58. 18.100 libavdevice 58. 4.103 / 58. 4.103 libavfilter 7. 29.100 / 7. 29.100 libswscale 5. 2.100 / 5. 2.100 libswresample 3. 2.100 / 3. 2.100 libpostproc 55. 2.100 / 55. 2.100 [mov,mp4,m4a,3gp,3g2,mj2 @ 0a440e00] error reading header pipe:0: Invalid data found when processing input If I run ffmpeg without the pipe command it is successful in creating the gif. .\ffmpeg\bin\ffmpeg.exe -i .\a8ddbbcacc224b427f5b7ca14bdf41b692291730.MP4 -ss 3 -t 5 -f gif -vf scale=-1:120 -r 5 -y test.gif Do you have any idea how to fix this? 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