[FFmpeg-user] -movflags faststart revisited

[JD]

On Sun, Feb 26, 2017 at 5:49 PM, Reuben Martin <reuben.m at gmail.com> wrote:

> On Sunday, February 26, 2017 5:44:56 PM CST JD wrote:
> > On Sun, Feb 26, 2017 at 4:07 PM, Cley Faye <cleyfaye at gmail.com> wrote:
> > > 2017-02-26 23:32 GMT+01:00 JD <jd1008 at gmail.com>:
> > > > Are there any flags that will let me playback an unfinished
> transcode?
> > > > Reason I am asking is that if my various options in the transcode
> > > > command
> > > > did not yield what I like, then I would like to abort the transcode.
> > >
> > > ​mp4 files will never be playable without "finishing" them. But you can
> > > interrupt the process at anytime with 'q'; that will properly close the
> > > file so you can play it.​
> >
> > ​Thanks - that is somewhat a panacea, especially if one
> > is not 50% or more into the transcoding - so that issuing
> > a 'q' will not lose too much is only say the transcoding is
> > into 10 minutes of the video.
> >
> > Now how about ffplay? I mean is/are there options
> > to ffplay that would allow the playing of the unfinsihed
> > mp4 file (without quitting the trancoding)?
> > ​
>
> Set the output format to flv. You can play flv before it’s finished
> encoding.
> If you decide you want to keep it, you can dump the video and audio streams
> from the flv into an mp4 file. (generally only takes a few seconds).
>
> -Reuben
>

​Thanx a lot, Reuben!!!
That's and excellent tip!​