[MEncoder-users] adding harddup's after the fact...

[Josh Sharpe]

I don't think this will work. The issue is that I didn't use harddup when I
encoded my video, so the video stream is now shorter than it should be.

On Tue, Dec 15, 2009 at 4:03 PM, Laine Lee <llee040 at sbcglobal.net> wrote:

>
> On 12/15/09 8:09 AM, "Josh Sharpe" <josh.m.sharpe at gmail.com> wrote:
>
> > Do I use that with -ovc copy ? Eg:
> >
> > Mencider -ovc copy -mc 0 -opfs 29.97 -oac copy -o new.avi old.avi
>
> BTW, why don't you get that Dragon Dictation app (before they start
> charging
> for it, if it's not too late already) for your iPhone so you can eliminate
> some typing.
>
> Are you using a Mac? You can demux and remux with MPEG Streamclip, I think.
> Anyway, while you have the ac3 file separated from the pictures, you can
> use
> SoX 14.3.0 and ffmpeg to adjust the tempo so you don't have to re-encode.
> And you might as well try it because harddup is not a sure cure anyway. If
> you don't have to adjust it too much, you won't lose enough quality to
> notice, I think. Yes, you can keep all 6 channels.
>
> This is the piper that came from Socke last summer. I use it practically
> every time I encode. You know how to get that speed factor, right? You
> determine what your current duration is and divide that by your desired
> duration, which you already know will be a lower number (better use
> milliseconds to be as accurate as possible). The trick is to get the
> desired
> time. Mediainfo can help, but I think sync is pretty much perceptual
> anyway,
> so I just play back in mplayer and (provided sync is good at the start) use
> the plus and minus keys to see how much difference is needed near the end.
> You already know you're going to be using the plus key. Give mplayer time
> to
> catch up to your adjustments before evaluating.
>
> >> ffmpeg -v 0 -i "$AUDIOFILE" -f sox - \
> >> | sox -S -V -p -p speed 1.04270833333333 \
> >> | ffmpeg -v 0 -i - -acodec ac3 -ab 448000 -y "$AUDIOFILE2"
>
> Laine Lee
>
>
> _______________________________________________
> MEncoder-users mailing list
> MEncoder-users at mplayerhq.hu
> https://lists.mplayerhq.hu/mailman/listinfo/mencoder-users
>