[FFmpeg-user] Is there a way to speed up to make partial transcoding of a video file.

Carl Eugen Hoyos ceffmpeg at gmail.com
Sun Jan 13 02:05:29 EET 2019

2019-01-13 0:48 GMT+01:00, shirish शिरीष <shirishag75 at gmail.com>:

>> 2019-01-12 19:29 GMT+01:00, shirish शिरीष <shirishag75 at gmail.com>:
>>> I usually find it takes quite some time when trying to partially
>>> trancode/copy a file.  I am concerned with the startup time. It takes
>>> anywhere between 3-5 minutes before transcoding/copying starts.
>> Command line and complete, uncut console output missing.

> I did share the console output via -
> https://paste.debian.net/1059975/

Except for input files, this is not welcome!

> $ ffmpeg -i somefile.mkv -ss 00:49:55 -t 00:4:44 output.mkv

If you move "-ss" in front of the input file (and the input is
seekable), it will significantly speed up the command.

For future questions, please remember that only current
FFmpeg git head is supported here.

Carl Eugen

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