File the name for the changed MP4 video and finally save the video by clicking “File” > “Save” > “Save Video” options. Finally take a tick in the “Shift” box and speed up or slow time the time points by clicking the up and down icons. Then play the MP4 video in the right-hand screen to confirm the exact delaying period. Once the MP4 video has been imported, then make sure you have selected “Copy” for each module. Open AviDemux and add MP4 video with which you would like to sync audio to the program. Download and install AviDemux on your computer. For the detailed steps on how to sync MP4 audio and video with AviDemux can, please refer to the details. Avidemux supports multiple audio and video formats, including AVI, MPEG, VOB, MP4, MKV, and FLV, as well as MP3, AAC, Vorbis, and more. Supports multiple video encodings from VCD to Xvid to H.263, and multiple audio encodings from MP3 to AAC to AC3. Avidemux supports files in multiple formats, including avi, mpeg, mp4, MKV and even FLV. It supports a variety of filters, so it is also very suitable for suppressing animations and making PSP movies. Avidemux can also convert the format of video files, extract subtitles from VOB files, and also embed SRT subtitles into video files. Avidemux is a very powerful video editing and conversion software suitable for processing video files, such as merging and editing DV short stories. In order to sync MP4 audio and video in an effective way, you had better adopt some third-party tools, such as AviDemux. Part 2: Sync MP4 Audio and Video with AviDemux The effective solution for this is to use another media player instead. Due to some audio codec or video codec errors of the MP4 videos within the video player you have adopted, the audio delay will happen frequently. Last of all, it is about the MP4 video player itself. Rearranging the disk will have a better effect. Second of all, excessive fragmentation of the disk can also cause sluggish playback or delayed audio. Firstly, the MP4 video contents themselves are created with an unsynced soundtrack which would directly result in the audio delay. Usually, you can locate the reasons from the following points. If the audio delay still happens once all the MP4 videos have already been downloaded to the local computer, the reasons for the issue are different. If the audio is out of sync during the downloaded MP4 playback This is one of the direct cause for the audio delay during the playback.Ģ. Thirdly, it may be due to the slow Internet connection. Secondly, if the CPU processing power is not strong when playing MP4 large files, it will be obvious that the sound screen will be out of sync. If the current operating system has not been reinstalled for too long or has not performed related optimization operations such as cleaning up junk and the registry, the picture and sound will not be synchronized when watching the video. First of all, it is related to the operating system. If the audio is out of sync MP4 video while streamed online, then you can try to tell the reasons based on these parts. If the audio is out of sync while streaming online You can locate the specific reason for the issue based on the following points.ġ. How to fix audio sync MP4 problems? Before this, we have to figure out what the possible reasons for MP4 audio out of sync. Part 1: Possible Reasons for MP4 Audio out of Sync Part 4: Sync MP4 Audio during Playback Easily.Part 3: Tips for Fixing MP4 Audio Sync with AviDemux.Part 2: Sync MP4 Audio and Video with AviDemux.Part 1: Possible Reasons for MP4 Audio out of Sync.
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