Adding a Multivideo Filter for Scaling, Watermarking, and Formatting 720p Videos with FFmpeg
In this article, we will discuss how to add a multivideo filter to scale, watermark, and format 720p videos using the FFmpeg command-line tool. FFmpeg is a powerful, open-source tool for handling multimedia files, including audio, video, and images. With its extensive set of features and capabilities, FFmpeg can be used for a wide range of multimedia processing tasks, such as video encoding, decoding, transcoding, muxing, demuxing, filtering, and streaming.
Scaling Videos with FFmpeg
Scaling a video involves changing its resolution, either up or down. To scale a video with FFmpeg, you can use the scale filter, which resizes the video to the specified dimensions. For example, to scale a video to 720p (1280x720), you can use the following command:
ffmpeg -i input.mp4 -vf "scale=-1:720" output.mp4In this command, -1 specifies to maintain the aspect ratio of the video while scaling it to 720 pixels in height. The input video is input.mp4, and the scaled output video is output.mp4.
Adding a Watermark with FFmpeg
To add a watermark to a video with FFmpeg, you can use the drawtext filter, which allows you to draw text on top of a video. For example, to add a watermark to the top-right corner of a video, you can use the following command:
ffmpeg -i input.mp4 -vf "drawtext=fontfile=/path/to/font.ttf: \
text='Watermark Text': fontcolor=white: fontsize=24: box=1: [email protected]: \
boxborderw=5: x=(w-text_w-10): y=10" output.mp4In this command, the drawtext filter is used to add a watermark with the text "Watermark Text" in white, with a black box border around it. The box is positioned 10 pixels from the top-right corner of the video, and the font size is 24 pixels. The font file is specified with the fontfile option, and the box color is specified with the boxcolor option.
Formatting Videos with FFmpeg
Formatting a video involves changing its codec, bitrate, pixel format, and other parameters. To format a video with FFmpeg, you can use various options and filters. For example, to change the codec to H.264, set the bitrate to 1.5 Mbps, and set the pixel format to yuv420p10le, you can use the following command:
ffmpeg -i input.mp4 -c:v libx264 -preset medium -crf 28 -b:v 1.5M \
-pix_fmt yuv420p10le output.mp4In this command, the -c:v libx264 option sets the video codec to H.264, the -preset medium option sets the encoding preset to medium, the -crf 28 option sets the constant rate factor to 28, and the -b:v 1.5M option sets the video bitrate to 1.5 Mbps. The -pix_fmt yuv420p10le option sets the pixel format to yuv420p10le.
Combining Scaling, Watermarking, and Formatting with FFmpeg
To combine scaling, watermarking, and formatting into a single multivideo filter with FFmpeg, you can chain the filters together using the ; separator. For example, to scale a video to 720p, add a watermark to the top-right corner, and format it with H.264, a bitrate of 1.5 Mbps, and a pixel format of yuv420p10le, you can use the following command:
ffmpeg -i input.mp4 \
-vf "scale=-1:720, \
drawtext=fontfile=/path/to/font.ttf: \
text='Watermark Text': fontcolor=white: fontsize=24: box=1: [email protected]: \
boxborderw=5: x=(w-text_w-10): y=10" \
-c:v libx264 -preset medium -crf 28 -b:v 1.5M -pix_fmt yuv420p10le output.mp4In this command, the scale and drawtext filters are chained together using the ; separator, and the formatting options are specified after the filter chain. This will produce a 720p video with a watermark in the top-right corner, encoded with H.264, a bitrate of 1.5 Mbps, and a pixel format of yuv420p10le.
In this article, we have discussed how to add a multivideo filter to scale, watermark, and format 720p videos using the FFmpeg command-line tool. We have covered the scale filter for scaling videos, the drawtext filter for adding watermarks, and various options for formatting videos. By combining these filters and options, you can create powerful multivideo filters to automate your video processing workflows.
References
Note: The command provided in the question, ffmpeg -i input.mp4 -vf "drawtext=te..., appears to be incomplete and missing some options. The complete command for adding a watermark with FFmpeg is provided in the "Adding a Watermark with FFmpeg" section of this article.