[digikam] [Bug 374799] Feature request - ability to convert video files

wildcowboy bugzilla_noreply at kde.org
Mon Feb 6 18:10:31 GMT 2017


https://bugs.kde.org/show_bug.cgi?id=374799

wildcowboy <aegoreev at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |aegoreev at gmail.com

--- Comment #4 from wildcowboy <aegoreev at gmail.com> ---
Here is the ffmpeg command I use to convert/compress video files. Works as a
charm.

ffmpeg -i in.mp4 -c:v libx264 -crf 23 -c:a libfaac -q:a 100 -map_metadata 0
out.mp4

This will convert the input with the x264 encoder and FAAC audio to an output
file, copying the original metadata. In order to change the quality of the
output, you can:
* Change the CRF value for video. Lower means better quality. 23 is default,
and anything below 18 will probably be visually lossless.
* Change the Q parameter for audio. Higher means better, and 100% is the
default.

Unknown encoder 'libfaac' error? Then your ffmpeg is not compiled with FAAC
support. Try " -c:a aac -strict experimental" instead.

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