[FFmpeg-user] Difference between FFmpeg Formats/Containers MP4 and H264

[Bang He]

-f mp4:  file format/container is mp4
-f h264: file format is h264, even if the file extension is mp4

On Sun, May 15, 2022 at 10:58 AM Roger <rogerx.oss at gmail.com> wrote:

> >MP4 can contain a variety of streams, including h264. If you specify h264,
> >you just have a raw h264 video stream, that's it.
>
> I've always used -f h264 until I ran into Hauppauge WinTV Version 10 using:
>
> ffmpeg -i "[SOURCE_FILE]" -f mp4 -vcodec libx264 -preset ultrafast
> -profile:v main -acodec aac "[DEST_FILE].mp4
>
> On the flip, I've never seen a *.h264 file name.
>
> If I'm not mistaken, the "-f" specifies the format or the container of the
> video/audio stream.
>
> So when specifying, "-f h264", format is assuming a video only container?
>
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