Where the %04d means that zeros will be padded until the length of the string is 4 i.e 0001… 0020… 0030… 2000 and so on. etc) use the following command: ffmpeg -r 60 -f image2 -s 1920x1080 -i pic%04d.png -vcodec libx264 -crf 25 -pix_fmt yuv420p test.mp4 To take a list of images that are padded with zeros ( pic0001.png, pic0002.png…. I have noticed that different versions of ffmpeg will produce different output file sizes, so your mileage may vary. When using ffmpeg to compress a video, I recommend using the libx264 codec, from experience it has given me excellent quality for small video sizes. Original, Updated : cleanup and information about overlaying images. The recorded H264 stream must be converted to an appropriate format, such as an MP4, before you can play it back or load it in MATLAB.Įxecute the following on the MATLAB command prompt to record video to a file called 'vid.h264' for 30 seconds.Using ffmpeg to convert a set of images into a video Since the recorded video is in raw H264 format, most players cannot play the video file directly. You cannot take snapshots while video recording is in progress. After video recording is complete, you can bring the video file to your host computer for playback. During video recording, images captured by the Camera Board are saved to a file on the Raspberry Pi hardware in raw H264 format. The record command returns to the MATLAB command prompt immediately after execution and does not wait for the entire video to be recorded. You start recording video by executing the record command. You can record video using the MATLAB command line interface for Raspberry Pi Camera Board.
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