For the 180fps video I took that will result in 6x slower play speed than real, but the time overlay gives you exact information on time (youtube does not show sub second time). The transpose filter accepts the values from 0-3. ![]() It also allows us to flip videos vertically or horizontally. We can use it to rotate the sample video either clockwise or anti-clockwise. Here I will show complete steps doing that, and finally upload to youtube as 30fps video. transpose is an FFmpeg filter used to rotate videos. ![]() In posting viewtopic.php?f=43&t=206047&p=1294557#p1294557 I described the steps needed after raspivid video capture to associate each frame in video with its recorded timestamp. Flip and rotate the video frame is a very common visual operation, it can create some interesting effects, such as making a mirror-symmetrical version of the. In this posting I will show how to take high framerate raspivid videos (90fps with v1 camera, 120fps with older Raspbian or 180fps with newest Stretch with v2 camera), add readable millisecond precision time overlay to the video, cut out relevant part of it, convert it to 30fps video (the maximum youtube allows for in case video is less than 720p, which mode 7 VGA resolution is). Tips to Split Videos Losslessly with FFmpeg 1. ![]() But the video is played at constant framerate of 25fps, with no indication of the real timestamps. If you upload such a video directly to youtube, it will allow for that (youtube does not allow to upload.
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