ffmpeg 4.1 slow to start transcoding

Questions involving a Windows version of FFmpeg.
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ILS
Posts: 2
Joined: Tue Jan 29, 2019 8:57 pm

ffmpeg 4.1 slow to start transcoding

Post by ILS » Tue Jan 29, 2019 9:30 pm

I am having a bit of an issue with the most recent version: ffmpeg-20190128-1db30d6-win64-static
The previous version I was using is: 20161027-bf14393 , which didn't have this problem, through it did take a bit longer to start.
What happens once I run the batch script there is a bit of a wait right after this:

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ffmpeg version N-93041-g1db30d6cec Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 8.2.1 (GCC) 20181201
  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. 26.100 / 56. 26.100
  libavcodec     58. 46.100 / 58. 46.100
  libavformat    58. 26.100 / 58. 26.100
  libavdevice    58.  6.101 / 58.  6.101
  libavfilter     7. 48.100 /  7. 48.100
  libswscale      5.  4.100 /  5.  4.100
  libswresample   3.  4.100 /  3.  4.100
  libpostproc    55.  4.100 / 55.  4.100
Once this stuff comes up, it is pretty fast to actually transcode.

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Input #0, image2, from 'Z:\18-1617_Lakeview-II\01_Frames\FINAL\01_FusionOutput\s01-02\s01-02_0%03d.tga':
  Duration: 00:00:10.46, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: targa, bgra, 1920x1080, 24 tbr, 24 tbn, 24 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (targa (native) -> utvideo (native))
Press [q] to stop, [?] for help
Output #0, avi, to 'C:\ExportedMOVs\s01-02.avi':
  Metadata:
    ISFT            : Lavf58.26.100
    Stream #0:0: Video: utvideo (ULRG / 0x47524C55), gbrp, 1920x1080, q=2-31, 200 kb/s, 24 fps, 24 tbn, 24 tbc
    Metadata:
      encoder         : Lavc58.46.100 utvideo
frame=  251 fps= 34 q=-0.0 Lsize=  880155kB time=00:00:10.45 bitrate=689424.3kbits/s speed=1.42x
video:880143kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.001301%
Is there anyway to speed this up. This is the command i'm running:

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"c:\FFmpeg\bin\ffmpeg.exe" -f image2 -framerate 24 -y -start_number 0 -i "Z:\18-1617_Lakeview-II\01_Frames\FINAL\01_FusionOutput\s01-02\s01-02_0%%03d.tga" -vcodec utvideo -pred left -pix_fmt gbrp -r 24 "C:\ExportedMOVs\s01-02.avi"
pause

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