[FFmpeg-user] generating `-map` options from ffmpeg-python [was: Re: How to embed subtitles into video using Python]
list+ffmpeg-user at jdlh.com
Wed Jul 13 20:21:13 EEST 2022
On 2022-07-13 05:53, Moritz Barsnick wrote:
> On Wed, Jul 06, 2022 at 13:36:30 -0700, Jim DeLaHunt wrote:
>> On 2022-07-06 02:46, Pavel Yermolenko via ffmpeg-user wrote:
>>> In Python there is ffmeg support package: *ffmpeg-python*. ffmpeg-python
>>> 0.2.0 <https://pypi.org/project/ffmpeg-python/>
>>> Unfortunately in the documentation [there] is no examples on how to
>>> process subtitles.
>> So I guess that this asks you to do either (and stand by for a discussion of
>> the really big problem with this):
>> .get_args(map='0:v', map='0:a', c='copy', map='1', 'c:s:0'='mov_text', 'metadata:s:s:0'='language=fra') ***Big problem!
> In [the *ffmpeg-python*] test code, there is an "example" for maps:
>> args = ffmpeg.output(i1['1'], i1['2'], TEST_OUTPUT_FILE1).get_args()
> for "-map 0:1 -map 0:2".
> You can probably reverse-engineer that, if the documentation doesn't
Good catch! That line does generate `-map` options to FFmpeg. That
proves it is possible.
The value of `i1` in that line is the return from a call to
`ffmpeg.input()`. The documentation for that, at
does not suffice for me at least to understand what the type of `i1` is,
and what is the result of getting the index '1' from `i1`. I think you
are right, it will require reading the code.
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