[mythtv-users] Permanently changing aspect ratio on a recording

[Ian Evans]

On Mon, Dec 1, 2014 at 9:46 PM, George Nassas <gnassas at mac.com> wrote:

> On Dec 1, 2014, at 8:48 PM, Ian Evans <dheianevans at gmail.com> wrote:
> >
> > GetTV decided to air an old Frank & Bing Xmas special, filmed in 4:3, as
> 16:9.
> >
> > So suddenly Bing and ol' Blue Eyes were short and squat. Manually
> changing the aspect ratio made things ok, but I was wondering if there was
> a way to permanently tell Myth to play that recording in 4:3 to up the WAF.
>
> I'm also curious about this and did some googling: assuming you're dealing
> with an mpeg2 file you can change the video's aspect ratio header without
> reencoding and myth will follow along. I was about to suggest ffmpeg but it
> seems it doesn't implemented such a function. However, according to this
> post:
>
>         http://ffmpeg.org/pipermail/ffmpeg-user/2012-August/008749.html
>
> mencoder does implement an aspect ratio change and a sample command line
> is given. Before experimenting I would copy my original someplace safe and
> rebuild myth's keyframe index afterwards.
>
> There's also some interesting info here:
>
>
> http://forum.videohelp.com/threads/365875-How-to-Change-Aspect-Ratio-of-MP4-Video-Without-Re-Encode-using-ffmpeg
>
>
Thanks, George. Aren't you in the GTA too? If so, have you noticed bad
aspects on GetTV?

Anyhoo, I dl'd this and it appears to have done the trick on my Windows
box:  http://www.videohelp.com/tools/Restream
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