FFmpeg: Difference between revisions
From Leo's Notes
This page was last edited on 23 November 2015, at 04:02.
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Using <code>ffmpeg</code> you can combine the two together: | Using <code>ffmpeg</code> you can combine the two together: | ||
command: ffmpeg -i video.mp4 -i audio.m4a -acodec copy -vcodec copy output.mp4 | command: ffmpeg -i video.mp4 -i audio.m4a -acodec copy -vcodec copy output.mp4 | ||
== Extracting a video section == | |||
To extract a video section: | |||
{{highlight|lang=bash|code= | |||
ffmpeg -i input.mp4 -ss 00:00:15 -t 00:00:10 -async 1 output.mp4 | |||
}} | |||
Where: | |||
{| class="wikitable" | |||
! -ss | |||
| The start time in HH:MM:SS | |||
|- | |||
! -t | |||
| The length of the video in HH:MM:SS | |||
|} | |||
== Issues == | == Issues == | ||
Revision as of 04:02, 23 November 2015
Merging mp4 and m4a
Using ffmpeg you can combine the two together:
command: ffmpeg -i video.mp4 -i audio.m4a -acodec copy -vcodec copy output.mp4
Extracting a video section
To extract a video section:
ffmpeg -i input.mp4 -ss 00:00:15 -t 00:00:10 -async 1 output.mp4
Where:
| -ss | The start time in HH:MM:SS |
|---|---|
| -t | The length of the video in HH:MM:SS |
Issues
Copying DASH video (via -vcodec copy) using versions older than 0.10 will result in an empty file because it is unable to read the video contents.