FFmpeg Android Commands: A Comprehensive Guide

When working with videos on your Android device, you may need to perform various tasks such as concatenating two mp4 videos, remuxing MKV to MP4, trimming a video, extracting frames or audio, and more. FFmpeg is a powerful command-line tool that can help you achieve these tasks efficiently. In this article, we will explore some of the most commonly used FFmpeg commands for Android.

Concatenating Two mp4 Videos

To join two mp4 videos, you can use the following FFmpeg command:

```

ffmpeg -i one.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts one.ts

ffmpeg -i two.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts two.ts

ffmpeg -i 'concat:one.ts|two.ts' -c copy -bsf:a aac_adtstoasc combined.mp4

```

This command will concatenate the two input mp4 videos and produce a single output video file named `combined.mp4`.

Remuxing MKV Video to MP4

To remux an MKV video to MP4 without re-encoding audio or video streams, you can use the following FFmpeg command:

```

ffmpeg -i input.mkv -codec:audio aac -b:audio 128k -codec:video libx264 -crf 23 output.mp4

```

This command will remux the MKV video to MP4 while preserving the original audio and video streams.

Trimming a Video

To trim a video from a given start time `mm:ss` to an end time `mm2:ss2`, you can use the following FFmpeg command:

```

ffmpeg -i input.mp4 -ss 00:10 -to 02:30 output.mp4

```

This command will trim the input video from 10 minutes and 0 seconds to 2 hours and 30 minutes.

Extracting Frames

To quickly extract a single frame from a video at time `mm:ss` and save it as a 128x128 resolution image, you can use the following FFmpeg command:

```

ffmpeg -i input.mp4 -ss 00:10 -frames:v 1 output.jpg

```

This command will extract a single frame from the input video at 10 minutes and 0 seconds and save it as an image file named `output.jpg`.

Combining Numbered Images into a Video or GIF

To combine numbered images (`frame_1.jpg`, `frame_2.jpg`, etc.) into a video or GIF, you can use the following FFmpeg command:

```

ffmpeg -i %03d.jpg -r 10 output.mp4

```

This command will combine the input images into a video file named `output.mp4` with a frame rate of 10 frames per second.

Extracting Audio

To extract the sound from a video and save it as MP3, you can use the following FFmpeg command:

```

ffmpeg -i input.mp4 -c:a libmp3lame output.mp3

```

This command will extract the audio stream from the input video and save it as an MP3 file named `output.mp3`.

In conclusion, FFmpeg is a powerful tool for Android that can help you perform various tasks such as concatenating videos, remuxing formats, trimming videos, extracting frames or audio, and more. By mastering these commands, you will be able to efficiently work with your video files on your Android device.

Ffmpeg android commands