Create Teaser Video

[cgeller]

We can use a karlviz recording to give a few insights of the OpenADStack.

The following commands were used to generate a 67s, 720p, 82 MB teaser video.

ffmpeg -i video.mp4 \
  -ss 00:08:35 -to 00:11:23 \
  -c:v libx264 -crf 18 -preset medium \
  -c:a aac \
  openadstack-karl_cropped.mp4

Faster for YouTube video

ffmpeg -i openadstack-karl_cropped.mp4 \
  -vf "setpts=PTS/2.5,fps=30" \
  -an \
  -c:v libx264 -crf 18 -preset slow \
  -pix_fmt yuv420p \
  -movflags +faststart \
  openadstack-karl-youtube.mp4

Further downscaled for teaser:

ffmpeg -i openadstack-karl_cropped.mp4 \
  -vf "scale=1280:720:force_original_aspect_ratio=decrease,setpts=PTS/2.5,fps=30" \
  -an \
  -c:v libx264 -crf 30 -preset slow \
  openadstack-karl-teaser.mp4

[cgeller]

We created a GIF at 45s-55s from openadstack-karl-teaser.mp4:

[lostendo]

crop video to only the gif part:

ffmpeg -i openadstack-karl-teaser.mp4 \
  -ss 00:00:45 -to 00:00:55 \
  -c:v libx264 -crf 18 -preset medium \
  -c:a aac \
  openadstack-karl-teaser-short.mp4

[lostendo]

teaser.webm