#Ffmpeg combine videos movie#
Hypothetically, I have a h264/aac encoded movie split across three files: MyShow1.m4v, MyShow2.m4v and MyShow3.m4v.
The -ss option seeks to an approximate position if used as an input option (placed before the -i), and seeks (much more slowly) to an exact position if used as an output option (placed after the -i).I’ve seen comments in other forums regarding possible loss of sync between audio and video when using these options. Copying (using the copy pseudo-codecs for the -acodec and -vcodec options) is fast, and performs no transcoding.If the source has multiple streams, check the -map option to force copying of all required streams. The above example only copies one video and one audio stream, and throws away any subtitle stream.
Episode 1 runs from the beginning of TwoEpisodesMyShow.m4v up to the 1hr 30min 00sec mark, and episode 2 runs from the 1hr 30min 02.5sec mark to the end.Įpisode 1 can be extracted using ffmpeg and the “-to hh:mm:ss” option as follows: ffmpeg -i "TwoEpisodesMyShow.m4v" -acodec copy -vcodec copy -to 01:30:00 "s01e01 MyShow.m4v"Įpisode 2 can be extracted using ffmpeg with the “-ss hh:mm:ss” option as follows: ffmpeg -ss 01:30:02.5 -i "TwoEpisodesMyShow.m4v" -acodec copy -vcodec copy "s01e02 MyShow.m4v" m4v file.Īssume, for example, I wish to extract “ s01e01 MyShow.m4v” and “ s01e02 MyShow.m4v” from TwoEpisodesMyShow.m4v. Splitting can be effected by using ffmpeg to copy video and audio tracks (without any transcoding) between nominated start and end times of the source. For the PMS to properly recognise the individual episodes I need to split this into separate per-episode.
#Ffmpeg combine videos tv#
Hypothetically, I’ve ended with a file called TwoEpisodesMyShow.m4v that contains multiple episodes of a TV show in a single m4v. If you’re not me, hope these notes help you too 🙂 Splitting an m4v file These are my notes to myself of what I did using ffmpeg after much googling. m4v files containing h264/aac encoded material. "concat=n=3:v=1:a=1" Better for distributionĪnd with this I can have a call to action in the final slide, as well as in the video description because there is no guarantee that people actually read the video descriptions.While constructing content for a Plex Media Server (PMS) at home I’ve recently need to both split and merge. If I wanted more videos I would add them as -i anothervid.mp4 and I would have to change the filter complex definitionĮ.g. I can join any number of videos together, but in this case I’m just combining two: ffmpeg -i video.mp4 -i promo-image.mp4 i anullsrc=channel_layout=stereo:sample_rate=44100 I found that when concatenating the videos, I needed to add a silent audio track otherwise the videos would not concatenate, so the following is the command I used to create my post roll video. It doesn’t matter what size the image was previously, the video will be 1920 x 1080 pixels. I will want to control the size of the video so that when I join them they are the same dimensions, I can do that in a single command. This will create a video called ‘promo-image.mp4’ with a duration of 5 seconds. Remember when you type it in, all lines will be on a single line. I can create a 5 second video from a png as follows: I could create a video for that, but to make it easier to change I’m going to use a single image that displays for a few seconds. Ideally I want a post roll video which links to my site.
#Ffmpeg combine videos how to#
I now know how to create videos for various sites.
Previous posts have covered ffmpeg for helping with video marketing. Having created a video, I want a call to action image that plays after the video is complete, and I want this to be standardised for a lot of my videos.
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