This is also required for using media frameworks. Shaka Packager requires demuxing when converting files. Demux (separate) the audio and video streams # Calling FFmpeg this way will give you an error message explaining that however, it lists information not available using Shaka Packager so feel free to ignore the error. Technically, FFmpeg always requires an output file format. Stream #0:1(eng): Audio: aac (LC) (mp4a / 0圆134706D), 48000 Hz, stereo, fltp, 127 kb/s (default)Īt least one output file must be specified Seek_preroll_ns: 20833 Characteristics using FFmpeg # ffmpeg -i glocken.mp4

The output looks like: File 'glocken.mp4' : Characteristics using Shaka Packager # packager input =glocken.mp4 -dump_stream_info

However, both provide different output for the same media. FFmpeg, ( on Stack Overflow) Display characteristics #īoth Shaka Packager and FFmpeg can be used to inspect the content of a media file and then display the characteristics of a stream.For this article, we often show these operations as separate commands for the sake of clarity.Ĭonversion is done with these applications: For example, there's nothing preventing you from setting an output file's bitrate in the same operation as a file conversion.

In many cases, the commands we're showing may be combined in a single command line operation, and would be when actually used. Although we've tried to show equivalent operations for all procedures, not all operations are possible in both applications. In this article we are going to learn some common commands for converting and manipulating specific characteristics of media files.

Remux (combine) the audio and video streams.

Demux (separate) the audio and video streams.

M3u8 to mp4 ffmpeg