[FFmpeg-user] Convert mkv video with 2 audio and 2 subtitle in format (e.g. avi) for playing in a dvd home player.

[Francois Visagie]

> -----Original Message-----
> From: ffmpeg-user [mailto:ffmpeg-user-bounces at ffmpeg.org] On Behalf Of
> Moritz Barsnick
> Sent: 27 September 2016 17:36
> To: FFmpeg user discussions
> Subject: Re: [FFmpeg-user] Convert mkv video with 2 audio and 2 subtitle in
> format (e.g. avi) for playing in a dvd home player.
> 
> On Thu, Sep 22, 2016 at 17:14:23 +0200, arkkimede wrote:
> > ffmpeg version 2.6.9 Copyright (c) 2000-2016 the FFmpeg developers
> >   built with gcc 4.9.2 (Debian 4.9.2-10)
> 
> In case of issues, please use latest git master, or 3.1.x. If you don't have a
> repository for that and can't build ffmpeg yourself, you can try these binary
> builds (the "git" version):
> https://www.johnvansickle.com/ffmpeg/
> 
> >     Stream #0:0: Video: h264 (High), yuv420p(tv, bt709), 1280x720 [SAR 1:1
> DAR 16:9], 25 fps, 25 tbr, 1k tbn, 47.95 tbc (default)
> >     Stream #0:1(ita): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s (default)
> (forced)
> >     Stream #0:2(eng): Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s
> >     Stream #0:3(ita): Subtitle: subrip (default) (forced)
> >     Stream #0:4(ita): Subtitle: subrip
> >     Stream #0:5(eng): Subtitle: subrip
> 
> > Related to the output I can provide a sequence of preferences:
> > 1 Video with good resolution and Italian and English languages and
> > subtitle
> 
> As mentioned, I don't know a method (within ffmpeg) of converting these
> text based subtitles to DVD subtitles. There do exist other tools out there for
> creating the bitmap based DVD subtitle streams, but you can google just as
> much as I.

Also pay attention to the format/s supported by the target player. Modern players accept a range of multimedia formats on DVDs written as a computer disks. Original DVD players required 1) content to be encoded to specification (e.g. by ffmpeg as discussed here) and 2) to be authored to disc in DVD format. If your player needs this, search for something like DVD authoring/creation tools. The Tools section at places like www.videohelp.com may be helpful.

> 
> > 2 Video with good resolution and Italian and English languages
> 
> "Good resolution" is very fuzzy. The best resolution a standard PAL DVD can
> support is 720x576 (displayed as 1024x576 or 768x576, depending on aspect
> ratio setting). If you want something better, don't use DVDs.
> ;-)
> 
> $ ffmpeg -i input.mkv -map 0:0 -map 0:1 -map 0:2 -target pal-dvd dvd.vob
> 
> "-target pal-dvd" will magically choose the proper resolution (720x576),
> codecs (mpeg2video and ac3 audio), bit rates and so on. If you don't like the
> defaults, you can still manipulate them with the proper parameters. E.g. you
> may want MP2 audio instead of AC3, you may want a lower bitrate.
> 
> If your input video content happens to be interlaced, I'm totally lost.
> ;-) I don't know whether this "just works". Sorry.

For encoding interlaced source, add
	-flags +ildct+ilme

If interlaced source is also resized during encoding, the resizer needs a particular flag to properly process that. IIRC, confirmation and syntax left to the reader ;-).

> 
> I don't know whether ffmpeg preserves the "forced" property either, or
> whether it has a way of setting it.
> 
> HTH,
> Moritz
> 
> P.S.:
> http://todayiwantedtoprogram.tumblr.com/post/15142587796/what-does-
> ffmpegs-target-pal-dvd-actually-do
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