[FFmpeg-devel] [PATCH][RFC][WIP] lavf/ramdec: RAM demuxer

Ganesh Ajjanagadde gajjanag at mit.edu
Mon Jan 4 06:31:01 CET 2016

On Sun, Jan 3, 2016 at 2:29 PM, Paul B Mahol <onemda at gmail.com> wrote:
> On 1/3/16, Ganesh Ajjanagadde <gajjanag at mit.edu> wrote:
>> On Sun, Jan 3, 2016 at 12:59 PM, Hendrik Leppkes <h.leppkes at gmail.com>
>> wrote:
>>> On Sun, Jan 3, 2016 at 9:42 PM, Ganesh Ajjanagadde
>>> <gajjanagadde at gmail.com> wrote:
>>>> This is a WIP patch for the RAM playlist format:
>>>> http://service.real.com/help/library/guides/realone/IntroGuide/HTML/htmfiles/ramfile.htm,
>>>> http://service.real.com/help/library/guides/realone/IntroGuide/HTML/htmfiles/ramsum.htm.
>>>> The implementation is currently essentially a kitchen sink dump of
>>>> concatdec; hence the copyright notice is preserved.
>>>> Metadata stuff is currently lacking. Feedback appreciated; this is my
>>>> first demuxer.
>>>> Done some very simple, basic testing.
>>> Playlists "intentionally" don't have demuxers, as they should probably
>>> be handled in a more generic top-level way. As you said, this is
>>> basically concatdec with parsing, which every playlist demuxer would
>>> likely end up being.
>>> Unfortunately, noone has yet finished any such API to handle this
>>> properly, hence no playlist support in FFmpeg yet.
>> I get a sense that it is tedious, annoying, and with little benefit:
>> for a power user, they have zero benefit as one can simply use concat
>> and/or script a converter to the concat format. For a normal user,
>> downstream clients anyway handle playlists.
>> Patch dropped; thanks.
> If you really want something hard, write tivo demuxer.

Don't really like writing demuxers, this was mostly an experiment
since I wanted to play some .ram files in ffplay yesterday and could
not. I have too many things on my list at the moment, so won't be
looking at this for a few months at the least. Nevertheless, noted.

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