Error(s) in re-building vignettes:
  ...
--- re-building ‘making_videos.Rmd’ using rmarkdown
ffmpeg version 4.3.1-8 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 10 (Debian 10.2.1-6)
  configuration: --prefix=/usr --extra-version=8 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, concat, from 'ari_input_10HIoSeBDCNsH.txt':
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: png, rgba(pc), 480x480, 25 tbr, 25 tbn, 25 tbc
Input #1, wav, from '/home/hornik/tmp/scratch/RtmppsUw8g/ari_audio_pQGJ7WiowxZk.wav':
  Duration: 00:00:02.00, bitrate: 1411 kb/s
    Stream #1:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, 1 channels (FL), flt, 1411 kb/s
Multiple -filter, -af or -vf options specified for stream 0, only the last option '-filter:v scale=trunc(iw/2)*2:trunc(ih/2)*2' will be used.
Stream mapping:
  Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
  Stream #1:0 -> #0:1 (pcm_f32le (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x55c9ed420880] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x55c9ed420880] profile High, level 3.0, 4:2:0, 8-bit
[libx264 @ 0x55c9ed420880] 264 - core 160 r3011 cde9a93 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - 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=15 lookahead_threads=2 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
Output #0, mp4, to '/home/hornik/tmp/scratch/RtmppsUw8g/file7efc23ce1fe0.mp4':
  Metadata:
    encoder         : Lavf58.45.100
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 480x480, q=-1--1, 25 fps, 12800 tbn, 25 tbc
    Metadata:
      encoder         : Lavc58.91.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
    Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s
    Metadata:
      encoder         : Lavc58.91.100 aac
frame=    3 fps=0.0 q=0.0 size=       0kB time=00:00:00.69 bitrate=   0.6kbits/s speed=1.38x    
[mp4 @ 0x55c9ed41f6c0] Starting second pass: moving the moov atom to the beginning of the file
frame=    3 fps=0.0 q=-1.0 Lsize=      39kB time=00:00:02.02 bitrate= 156.6kbits/s speed=3.06x    
video:5kB audio:31kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 4.813656%
[libx264 @ 0x55c9ed420880] frame I:1     Avg QP:11.03  size:  3230
[libx264 @ 0x55c9ed420880] frame P:1     Avg QP:18.21  size:  1516
[libx264 @ 0x55c9ed420880] frame B:1     Avg QP:15.37  size:   125
[libx264 @ 0x55c9ed420880] consecutive B-frames: 33.3% 66.7%  0.0%  0.0%
[libx264 @ 0x55c9ed420880] mb I  I16..4: 50.3% 41.3%  8.3%
[libx264 @ 0x55c9ed420880] mb P  I16..4:  1.1%  2.7%  3.6%  P16..4:  0.4%  0.1%  0.0%  0.0%  0.0%    skip:92.1%
[libx264 @ 0x55c9ed420880] mb B  I16..4:  0.1%  0.0%  0.0%  B16..8:  9.0%  0.4%  0.0%  direct: 0.0%  skip:90.4%  L0:19.4% L1:80.0% BI: 0.6%
[libx264 @ 0x55c9ed420880] 8x8 transform intra:41.0% inter:0.0%
[libx264 @ 0x55c9ed420880] coded y,uvDC,uvAC intra: 5.3% 0.0% 0.0% inter: 0.2% 0.0% 0.0%
[libx264 @ 0x55c9ed420880] i16 v,h,dc,p: 83% 11%  6%  0%
[libx264 @ 0x55c9ed420880] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 75%  2% 23%  0%  0%  0%  0%  0%  0%
[libx264 @ 0x55c9ed420880] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 41% 14% 33%  2%  3%  2%  2%  2%  2%
[libx264 @ 0x55c9ed420880] i8c dc,h,v,p: 100%  0%  0%  0%
[libx264 @ 0x55c9ed420880] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x55c9ed420880] kb/s:12.99
[aac @ 0x55c9ed422000] Qavg: 1003.953
Making output_file directories
Downloading PPTX
Quitting from lines 216-218 (making_videos.Rmd) 
Error: processing vignette ‘making_videos.Rmd’ failed with diagnostics:
Timeout was reached: [doc-0o-c8-slides.googleusercontent.com] Operation timed out after 10001 milliseconds with 0 out of 0 bytes received
--- failed re-building ‘making_videos.Rmd’

SUMMARY: processing the following file failed:
  ‘making_videos.Rmd’

Error: Vignette re-building failed.
Execution halted