Mkv2mp4 making delay
#Mkv2mp4 making delay mp4
MP4 doesn't officially support AC3 audio so the audio track should be converted into a supported format (eg. Now you have remuxed streams from matroska container into mp4 container without losing any quality. Depending on usage AC3 audio track should be re-encoded into something else before muxing. I had to add -fps 24 option because MP4Box didn't detect video fps correctly. Saving to video.mp4: 0.500 secs Interleaving MP4Box -fps 24 -add video.h264 -add audio.ac3 video.mp4 AVC-H264 import - frame size 1280 x 720 at 24.000 FPS Container format: AVC/h.264 elementary streamĮxtracting track 2 with the CodecID 'A_AC3' to the file 'audio.ac3'. Mkvextract tracks video.mkv 1:video.h264 2:audio.ac3 Extracting track 1 with the CodecID 'V_MPEG4/ISO/AVC' to the file 'video.h264'. Then extract video and audio according to their tracks with: Mkvmerge -identify video.mkv File 'video.mkv': container: Matroska
#Mkv2mp4 making delay install
Get needed software sudo apt-get install gpac mkvtoolnixĮxtract video and audio from matroska fileįirst you need to check what tracks the matroska file contains with For example, mp4 does not support SubRip subtitles (. So check if your chosen container format, be it mkv, mp4 or even avi has support for all the content in your files (video, audio, subtitles, data, etc). Some containers may not support some formats. Add -map 0 if you want to select all streams from the input. For example, if your input has two video streams and one audio stream then only the video stream with the largest frame size will be selected. Think of it like a copy and paste.ĭefault stream selection behavior is to select only one stream per stream type. codec copy stream copies, or "re-muxes", the streams from the input to the output without re-encoding. It auto-detects a Matroska to MP4 container conversion based on input/output filenames. It is one of the backends for many of the GUI tools mentioned in other answers.Ĭhanging container without re-enconding content could not be simpler: ffmpeg -i input.mkv -codec copy output.mp4 Libav is a fork of FFmpeg, which Ubuntu switched to for a few years until Ubuntu 15.04.
So if anyone coudl give any advice that would actually solve this repeated problem, thanks in advance.Perhaps the easiest tool for that is ffmpeg, or avconv from the libav-tools package. I don't know whether the issue is with the laughable mkv support that is currently available or if my computer is just being hacked by some loser trying to screw up the conversion every single time, but MKV/H264 files are the only videos i've had trouble successfully converting and uploading to a streaming site. This problem keeps recurring with all mkv/H264 files I attempt to convert or remux. Although the audio and subtitles are completely synced, the video and audio are not. The closest I've come to solving this issue is by remuxing the mkv to an mp4 in my mp4box gui. I have tried other video forums, but the posters just go around in circles. Whatever I try there is always the same problem with the audio/video being out of sync. When i tried remuxing it to an mp4, the audio was too far ahead of the video. When I tried just opening the MKV file (in avidemux or vdm) to edit it directly, the audio was to late. In every case the resulting video file experienced the same problem: severe audio/video sync problems. an mkv with just the single audio and subtitle files I wanted to be in the clip. Extracting the contained files with MKVextractGUI and remuxing them to: Opening the mkv in Virtualdubmod w/ avisynth and trying to save the selection as an Xvid AVI.
Opening the MKV in Avidemux and trying to save the 3 minute selection. video (MKV container/AVC) to an easier to edit container, in order to cut a 3-5 minute clip from it and upload it to the internet.