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Mkv2mp4 keep original video8/3/2023 ![]() ![]() Step 3 Insert the audio from LargeClip ffmpeg -i spliced-vid.mp4 -i LargeClip.mp4 -c copy -map 0:v -map 1:a Final. I use pretty much default settings, superfast level 4.1 /mp4 /I do have enable mp4 optimization when loading the file checked m now sure if that was default. ffmpeg -f concat -i concat.txt -an -c:v libx264 -crf 23 -fflags +genpts spliced-vid.mp4 I seriously need to fix this error because I have a lot more mkv to mp4 to do. This command will skip the audio since we don't to splice the audio streams. There are seven alternatives to MKV/AVI to MP4 for Mac, Windows, Linux, Online / Web-based and BSD. after switching to SmallClip for 12 seconds, you want to resume LargeClip 12 seconds later from where you left it off. But then, the file size will be bigger as well. Make sure that the sync of LargeClip isn't broken, i.e. So, if you load your MKV video into Handbrake, and re-encode it with x264, the H.264 encoder Handbrake uses, store it in an MP4 container, you are going to lose quality no matter what, unless you set the bitrate or quality factor so high that you won't (really) see the difference. The mind-blowing software empowers you to turn video files into 1000+ audio and video files without getting the original quality of video tinkered with. goal we will choose an encoding that is close to the original video quality. ![]() These timecodes, in seconds, refer to the source file timecode, not of the assembled output. Lightning-Fast MKV to MP4 Converter Lossless MKV Video Conversion 100. This shows the first 10 seconds of LargeClip, then the first two seconds of smallclip, then resumes the Largeclip at 12:00, shows it for 5 seconds, then splices in 23:00 to 27:00 of small clip, switches back to LargeClip at its 21:00 and keeps it till its end. You must first create a plaintext file, say, concat.txt, like this file 'LargeClip.mp4' For accurate splicing, re-encoding is needed which is what the commands below do. You can use the concat demuxer in ffmpeg to do this. ![]()
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