The batch file, and ffmpeg.exe, must both be put in the same folder as the. Then I created a simple batch file (concat.bat), with the following contents:įfmpeg -f concat -i mylist.txt -c copy output.mp4 I renamed the files (as file1.mp4, file2.mp4, file3.mp4) such that the parts were in the correct order for viewing the complete tv episode. mp4 video files) the following was an effective solution for Windows 7, and does NOT involve re-encoding the files. mp4 files (which I obtained from : a 50 minute tv episode, downloadable only in three parts, as three. If in doubt about which method to use, try the concat demuxer.įFmpeg Wiki: How to concatenate (join, merge) media filesįor. This method does not work for many formats, including MP4, due to the nature of these formats and the simplistic concatenation performed by this method. Do not use with MP4.įfmpeg -i “concat:input1|input2” -codec copy output.mkv Use this method with formats that support file-level concatenation (echo file ‘first file.mp4’ & echo file ‘second file.mp4’ )>list.txtįfmpeg -safe 0 -f concat -i list.txt -c copy output.mp4 $ ffmpeg -f concat -safe 0 -i mylist.txt -c copy output.mp4 Use this method when you want to avoid a re-encode and your format does not support file-level concatenation (most files used by general users do not support file-level concatenation). If you want to avoid the re-encode, you could re-encode just the inputs that don’t match so they share the same codec and other parameters, then use the concat demuxer to avoid re-encoding everything.įfmpeg -i opening.mkv -i episode.mkv -i ending.mkv Note that this method performs a re-encode of all inputs. Use this method if your inputs do not have the same parameters (width, height, etc), or are not the same formats/codecs, or if you want to perform any filtering.
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