How to get h264 video info?

To retrieve information about H.264 video files, various tools and methods can be employed. Below are some common approaches and corresponding tools:

1. Using FFmpeg

FFmpeg is a powerful open-source tool for processing video and audio files. It supports decoding and analyzing H.264 encoded video files.

Step-by-Step Example:

1. Open the command-line interface.
2. Enter the command ffmpeg -i video.mp4 to retrieve detailed information about the video. Here, video.mp4 is your H.264 video file. This command outputs details such as the codec, resolution, and frame rate.

2. Using MediaInfo

MediaInfo is a convenient tool for obtaining technical and tag information of multimedia files. It supports multiple operating systems, including Windows, Mac OS, and Linux.

Step-by-Step Example:

1. Install MediaInfo.
2. Open MediaInfo and drag the H.264 video file into it.
3. Review the information displayed on the interface, such as the codec format, frame size, frame rate, and duration.

3. Using Programming Libraries (e.g., Python's PyAV)

If you need to automate the process of retrieving video information within software applications, you can use programming libraries. PyAV is a Python binding for FFmpeg, capable of reading and processing video files.

Code Example:

python
import av

container = av.open('video.mp4')
stream = next(s for s in container.streams if s.type == 'video')
print('Codec:', stream.codec_context.codec.name)
print('Resolution:', stream.codec_context.width, 'x', stream.codec_context.height)
print('Frame rate:', stream.rate)

This code opens a video file and prints details such as the codec, resolution, and frame rate of the video stream.