Questions tagged [concatenation]

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Ffmpeg How to avoid audio sync when merging videos

I want to merge some videos from a list. Some of them have frozen frames, with silence filling. When I merge them the silence disappears, but the frozen frames are kept. Is there any way to add async=...
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Concat Demuxer playlist

So according to the docs located here https://trac.ffmpeg.org/wiki/Concatenate section: Changing playlist files on the fly it says you can do this: Now you can change the looping clip by a simple ...
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FFMPEG concat two video together but one plays back in a slower speed

I am trying to concatenate two videos using FFMPEG concat. The second video plays a slower speed and loses it's audio, but not only that, the time elapsed counter in the windows video player also ...
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Merging multiple files but specify the time each file is inserted (alternatively, stretch them to a specified duration)

Situation: 3 hours of video, consisting of 18 H264 mp4 files that should have exactly 10-minutes each but they last just a little bit less (some milliseconds missing). When merging them, I end up ...
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Concatenate H.264 raw but basic streams without reencoding or quality loss

How does one go about concatenating several H.264 raw streams into one without reencoding or quality loss? The streams lacked any advanced features and represented contuous recording. There is no ...
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How to put a trailer clip in the middle of the main video with FFMPEG?

I have two videos of the same format encoded with the same codecs. I want trailer.mkv to be played after n minutes in the middle of main.mkv. After playing trailer.mkv, the rest of the main.mkv will ...
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How to concatenate videos with different number of streams?

I have two video files (.mov), first one contains only video stream and the second one contains both video and audio streams. Is it possible to concatenate them? I have tried using ffmpeg but it doesn'...
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ffmpeg: concat without temp files?

Is it possible to concat without temp files using ffmpeg? eg; # nice ffmpeg -v error -f concat \ -ss "52.519" -copyts -to "53.153" -i in.mkv \ -ss "53.186" -copyts -...
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Does ffmpeg concat demuxer update the position of the moov atom if present in each video file?

Years ago I asked this question on: stackoverflow about correct syntax using the ffmpeg Concat demuxer to join mp4 files together. One question I hadn't thought to ask at the time was, when joining ...
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ffmpeg - concatenate files, BUT strip the last few frames from the end of each one

I am trying to find the best way to automatically concatenate a large number of files that have been recorded with an overlap within them. In the process of 'glueing' the video files together, to get ...
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How to concatenate MPEG-4 and AVC/h.264?

I would like to use ffmpeg, mencoder or still something free. I cannot concatenate two videos because of different video codecs: $ mkvmerge -o merged.mkv 1.mkv \+ 2.mp4 mkvmerge v19.0.0 ('Brave ...
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