[FFmpeg-devel] [PATCH]lavf/mxfdec: Export EIA608 Closed Captions by default

Carl Eugen Hoyos ceffmpeg at gmail.com
Sun Feb 17 04:24:51 EET 2019

2019-02-17 1:40 GMT+01:00, Marton Balint <cus at passwd.hu>:
> On Sat, 16 Feb 2019, Carl Eugen Hoyos wrote:
>> I am not sure why there is an option to disable Closed Captions export,
>> but disabling the export by default seems like a bad idea to me.
> SMPTE 436M can be any kind of ancillary data, not only closed captions.
> That is why the default behaviour (pass all the data to userspace so a
> userspace app can parse it properly) makes sense.

> Some applications might depend on this.

Wouldn't it still make more sense to change the default?
The application that knows it needs the ancillary data, well, knows
it while the average user who reads the mxf file has no idea that
there is a subtitle stream and has no idea that FFmpeg can read
the subtitle stream.

I would bump micro in any case and the option also works fine
with older FFmpeg versions so I don't really see the issue.

Carl Eugen

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