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

[Kieran O Leary]

Hi

On Sun 15 May 2022 at 16:59, Roger <rogerx.oss at gmail.com> wrote:

>
> >> So when specifying, "-f h264", format is assuming a video only
> container?
> >>
> >
> >I'm not sure if container is the correct term here. It's just the video
> >stream itself, which is capable of existing on its own outside of a
> >container. Not many streams allow that. DV is one that comes to mind,
> where
> >you can get raw DV streams which can even contain audio streams and other
> >data streams interleaved. I've ran some tests and have not found a way to
> >retain audio while using -f h264, it just retains a video stream. Maybe
> I'm
> >doing something wrong?
> >
> >I can't think of many reasons why you would want standalone video streams
> >outside of a container, so why not just use the mp4 or mkv format as it
> >should have greater compatibility with playback tools?
>
> Ah! I figured-out why "-f h264" worked for my past scenarios without
> apparent
> problems, the project contained only video, no audio!
>
> And, likely omitting "-f h264" and only specifying the video/audio codecs
> for
> other video with audio projects.
>
> Kind of a fluke my incanatation worked without apparent problems!
>
> Glad I now have this ironed-out and am now correctly using ffmpeg for
> h264/mp4
> videos!
>
> Always knew h264 was a codec, until seeing the "-f h264" option within
> ffmpeg
> manual.  Now I know "-f h264" for video only streams, likely security
> video
> without audio?


I think so, or perhaps webcams?

Best,

Kieran

>
>
> Roger
>
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