Dear Jin DeLaHunt,
Thank you for your detailed response.
I am quite familiar with how versatile ffmpeg is with its extensive commandline
flags. I know about how to use multiple input files (-i), use mapping (-map) to
select what of those inputs should go into the output file, and apply
complicated filters on that before it is going into the ouput file container.
When I then do a 'ffprobe' of the resulting output file, I get for example
something like this:
Input #0, matroska,webm, from 'GMT20200918-030903.mkv': Metadata:
COMPATIBLE_BRANDS: isommp42 MAJOR_BRAND : mp42 MINOR_VERSION : 0
ENCODER : Lavf58.29.100 Duration: 00:23:21.60, start: 0.000000,
bitrate: 580 kb/s Stream #0:0: Video: h264 (High), yuv420p(progressive),
640x360, 25 fps, 25 tbr, 1k tbn, 2k tbc (default) Metadata:
HANDLER_NAME : H.264/AVC video ENCODER : AVC Coding
DURATION : 00:23:21.600000000 Stream #0:1: Video: h264 (High),
yuv420p(progressive), 1024x768, 25 fps, 25 tbr, 1k tbn, 2k tbc (default)
Metadata: HANDLER_NAME : H.264/AVC video ENCODER : AVC
Coding DURATION : 00:23:21.600000000 Stream #0:2: Audio: aac
(LC), 32000 Hz, mono, fltp (default) Metadata: HANDLER_NAME : AAC
audio DURATION : 00:23:21.568000000 Stream #0:3: Subtitle:
webvtt Metadata: DURATION : 00:23:20.790000000
The streams that I have selected from the input files, all end up under the
"Input #0" of the output file.
My question is then this:Can I also have (and/or create) "Input #1", "Input
#2", etc. in the output file container?Having an "Input #0" in the file, at
least suggest that the container file can contain also "Input #1", "Input #2",
etc.
I have been searching the Internet for more than a week, without success.....
Any ideas?
Thank you.-SR.
On Monday, September 28, 2020, 04:00:54 AM GMT+9, Jim DeLaHunt
<list+ffmpeg-u...@jdlh.com> wrote:
On 2020-09-27 02:58, Stub via ffmpeg-user wrote:
> Hello,
> Can ffmpeg put various mapped inputs into different Input streams in the same
> container output file?
> So far I only have created output container files, which only had "Input
> #0":Input #0 Stream #0:0 Stream #0:1 Stream #0:2 etc.
> Can I also add to this container another input, like:
> Input #1 Stream #1:0 Stream #1:1 Stream #1:2 etc.
> If yes, how can I go about with ffmpeg?
> Thank you.-SR.
Hello, Stub Spamrefuse (curious email addresses you have there):
Yes, FFmpeg can put various mapped inputs into different _output_
streams in the same container output file.
Invoke FFmpeg with multiple '-i inputfile' arguments to read multiple
inputs. The '-map' option gives a flexible way of mapping input streams
into output streams, perhaps via filters. See "Stream selection" in the
documentation for a description:
<http://ffmpeg.org/ffmpeg-all.html#Stream-selection>.
I don't follow what you mean by "into different Input streams in the
same container output file". Streams in an output file are no longer
input streams, are they?
But FFmpeg is a complicated tool. It may be easier if you give a
specific example, with a specific command line and console output, and
tell us specifically what about that example is different than what you
want.
Best regards,
—Jim DeLaHunt
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