我需要使用 python 将 LibreOffice impress 演示文稿导出为视频格式。
我已经设法使用 pyuno 将演示文稿导出为flash文件格式，我需要将其转换为 mp4（或任何其他著名的视频）格式。我曾尝试使用“ffmpeg”但不起作用。
failed to read the duration of file /home/ankur/Desktop/test_dev_1010_v111.swf.
Here are the file infos returned by ffmpeg:
ffmpeg version 4.1-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100
libpostproc 55. 3.100 / 55. 3.100
[mjpeg @ 0x52f5240] Found EOI before any SOF, ignoring
[swf @ 0x52f3b40] [IMGUTILS @ 0x7ffdb41d6e70] Picture size 0x0 is invalid
[swf @ 0x52f3b40] invalid frame size 0x0
Input #0, swf, from '/home/ankur/Desktop/test_dev_1010_v111.swf':
Duration: N/A, bitrate: N/A
Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1058x794 [SAR 96:96 DAR 529:397], 12 tbr, 12 tbn
At least one output file must be specified
请指导我正确的方向。