Questions tagged [mp4]

MP4 specifically refers to the MPEG-4 part 14. A standard audio and video container that is part of the MPEG-4 specification developed by ISO / IEC.

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How to change mp4 windows file creation date to create date from QuickTime

I have seen many similar questions to this, but can't sus out this exact problem: I take a lot of GoPro videos during my motorcycle adventures. While on the road I will upload video files to a cloud ...
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How can I force a subtitle track to be set as active on an MP4 video?

I'm converting .mkv's to mp4 and it's working, however the issue is that when I open the .mp4, the subtitle track is disabled by default. I have to manually select it as such: How can I make it so ...
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Progressively adjust audio volume over time

I have two audio tracks and what I need to do is at some time to start lowering first audio track and progressively tune second audio track. This change in audio tracks should take for example 2 ...
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Recursively set Title property of all MP4 files based on filename in a folder and subfolders

I am looking for a way to set "Title" property of all MP4 files in a folder and subfolder based on the filename. e.g. It should change the title of "Sample Video.mp4" file to "...
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ffmpeg - Redownload missing fragments to fix downloaded stream

I have dowloaded an H.264 video stream using ffmpeg -i <URL> -c copy <name>.mp4 but ffmpeg reports that it has skipped some fragments. Since the stream is still online (with, I suppose, ...
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FFmpeg to mitigate truehd effects on remux of MKV to MP4

I am trying to come up with an FFmpeg command (for use in a script) that will take an mkv generated from MakeMKV and remux all the video and audio tracks to an mp4 (without the subtitles) without ...
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MP4 - Many of my family videos are suddenly side by side and green

As mentioned in the title, many of my family videos are suddenly side by side and green. They are normal 2D videos. I don't understand why this happened, it is very sad since beautiful memories are ...
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FFMPEG - COPY MKV to MP4 but add 2.0 Stream

Morning All, Using FFMPEG currently just to re-container UHD MKV into MP4 with... ffmpeg -i File1.mkv -c:v copy -c:a copy -strict -2 File1.mp4 But these MKV only have TrueHD or DTS-HD which is fine ...
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Output videos are not overwritten. Automatically rename output video with ffmpeg

I'm having problems with my videos coming out. Every time I create a new video they always overwrite the old one. I want to find a way to automatically rename the output video every time I render so ...
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mediastreamvalidator throws "Error Injecting Segment data"

mediastreamvalidator throws "Error Injecting Segment data" for fMP4+hevc+HLS file. here is the attached screenshot. How to fix it to make it playable ?
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HLS+fmp4 not working

fmp4 video file is readily playable when served to iOS and Android, but it is being served full media in a single go. So, In order to serve chunk-wise, used HLS. But unable to play on iOS and played ...
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How to convert Dolby Vision 7 MKV to MP4 to play on LG OLED TVs?

I am a noob at this and have been at it for hours but can't seem to work it out. Here is the HDR Format from mediainfo- "Dolby Vision, Version 1.0, dvhe.07.06, BL+EL+RPU, Blu-ray compatible / ...
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What is the difference between download, progressive-download, streaming and pseudo-streaming

Let me put my understanding first, lets say we are referring to a video file. download => In general download, file cannot be played unless it completely downloaded. progressive-download => Here,...
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Using FFMpeg with Twilight Render

I have installed FFmpeg for creating mp4 files from a sequence of images generated with the animation editor in Twilight Render. I then try to generate an mp4 file, but I do not get a valid mp4 file. ...
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How can I fix a (possibly corrupt?) mp4 file?

I'm afraid I don't know (can someone help me diagnose?) whether this file is corrupt or not. I'm just guessing. I'm using Linux, Lubuntu 20.04LTS, and VLC v 3.0.9.2. Unlike the other mp4 files in ...
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Fix/remux mp4 to get correct video length

I captured a roughly two hour MS Teams video session using vlc. No audio, that is fine. When I open the file in a video player, it erroneously reports a length of 36 minutes, however it keeps playing ...
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FFmpeg transcode piped mp4 with MOOV at end - but I can read it twice

I need to transcoding an MP4 file using that I can only access via a stream. The MOOV atom is at the end of the file. I do not have the ability to seek to a specific part of the file, only read a pipe ...
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Power Shell Program to add gps coordinates for Apple MP4 videos

SuperUser posted a Power Shell program to add latitude, longitude, and altitude to Windows Explorer for JPG/JPEG files. Works beautifully. Does he have another one that will do same thing for Apple ...
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audio and video not correctly sync after concatenation

totally new to video editing in general and in need of some help =) command that I'm using (windows batch): (echo file cucca.jpg.mp4 & echo file cucca.fade.mp4 & echo file cucca.jpg.mp4)>...
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Convert Dolby Vision file in MKV container to MP4 container

I have a 5GB Dolby Vision file encoded in MKV container. If I play this file in my LG CX TV, there is a discoloration all over the display. Apparently the default WebOS media player that comes with ...
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ffmpeg Major_Brand and Minor_Version

I've found that certain videos I encode are unplayable on my LG TV streaming via Plex. I think the issue may have something to do with the Major_Brand and Minor_Version. Files that play are ...
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Clone mp4 with ffmpeg but keep only the minimum atoms

I have an mp4 video. It plays correctly using VLC, QuickTime and in Chrome browser. But it doesn't play correctly on an Android device. I suspect that some atom in the mp4 container is the root of the ...
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How to convert old PEF pentax raw format to jpg or mp4?

I have some old pentax .PEF files and I want to convert it updated jpg or mp4 formats. How do I go about this?
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To extract and get some parts/clips out of a MP4 file to be concatenated into another [duplicate]

How to extract/get some parts/clips out of a MP4 file to be concatenated into another new MP4 file? I tried to get/extract out only first 19 seconds, also a part beginning from 32th second up to its ...
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Subtitles misaligned/missing when cutting video using ffmpeg

TL;DR: After cutting a video with ffmpeg, subtitles are invisible in VLC player even though there is a subtitle stream. I have an MP4 file of a TV recording of a movie and I want to cut off the parts ...
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Looking for help demystifying corrupt mp4 file

I am hoping to get some help. We have a .mp4 file that was created by a security software program called Blue Iris that is now corrupt. They don't seem to be able to help much and now, the footage is ...
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Video is shown as audio after upload on server

I recorded a video (Ocam, Windows10) and tested it. It works fine but when I upload it, it only shows an audio file on the server. When I convert it with Windows Movie Maker, it works fine. Here are ...
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FFMpeg Mp4 cover art shows on Windows but not in Android

I'm decrypting an audible audiobook using this command: ffmpeg -audible_key KEY -audible_iv IV -i book.aax -c copy out.m4b The output file seems fine on my Windows machine. Metadata and cover are are ...
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Is there any way to passthrough an MKV file to MP4 without it ending up as HVC1?

I use my PS3 to play all my shows & Films using x2 (Fat32) 5TB Drives, normaly mp4's & avis, but I've noticed the PS3 won't play HVC1. I recently tried using dvdfab with the passtrhough option ...
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File explorer hangs when right clicking mp4 files?

Right-clicking Mp4s in file explorer freezes the window. A temporary fix is a restart until I right-click another MP4 file. I've tried cmd commands: Dism /Online /Cleanup-Image /CheckHealth Dism /...
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Converting video (mkv to mp4) results in 2 chapter menus, instead of 1, according to mediainfo?

I used ffmpeg to convert (or copy) an mkv file into an mp4 file, however mediainfo reveals the mp4 video has an additional chapter menu added, and as part of a track with an ID. Original mkv file: ...
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Generate a silent audio file using ffmpeg based on input video duration

I'm trying to create a single silent audio file of the same length of an mp4 video. In addition, I need to accomplish it using non seekable outputs. But, for some reason when I select '-vn', as I only ...
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FFMPEG mpegts not include first byte data

I save a live stream data to an MP4 via ffmpeg with this command: ffmpeg -i url -c:v vopy -c:a mp3 -f mpegts f:/2.mp4 After I open this file with a hex editor this is the output. Another way to ...
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How to convert a cmfv file to mp4

I have a .cmfv file that I would like to convert into .mp4. I can't seem to find anything about it online. Is it possible to convert it to .mp4?
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AV1 extract keyframes

Using this file [1], I can run this command with no problem: ffmpeg -i crushed-between-two-portals.mp4 %d.jpg but if I run either of these commands [2]: ffmpeg -i crushed-between-two-portals.mp4 -vf &...
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What is the difference between .m4s and .ts media files?

From my understanding they can both contain media segments and are meant to be reconstructed at the client but what is the difference between the two? Edit: This is in the context of HLS
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Audio Conversion through change of file extension (E-AC3)

Not sure if this i the right place to ask my question but I'll give it a go. I extracted an E-AC3 Audio track with MKVExtractGUI. The output file I get was .eac3. Another tool I used says it supports ...
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Why is the Batch script I created to convert MP4 files to GIF files with FFmpeg not working?

This is what I have so far. It runs, but throws an error. I have come up with the following below. for %%a in ("*.mp4") do ffmpeg -i "%%a" -t 3 -vf "fps=10, scale=320, flags=...
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How to convert exe to video?

I have a video with .exe extension. I tried renaming to to mp4, avi, mkv, ts and many more, tried opening it with vlc, none of which worked. I got the exe when I downloaded a video from a site using ...
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How to convert MOV (with Alpha) to MP4 (with ALpha) - using FFmpeg [closed]

I am trying to convert a MOV (with alpha channel) to WebM and Mp4 (with Alpha channel) using FFmpeg. The WebM video is coming with the Alpha channel. But the video is not supported in SAFARI Browser. ...
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What ffmpeg command would convert a video for iPad/iPhone in 2021?

One of the answers almost a year ago was to use the following command: ffmpeg -i input.mp4 -vcodec libx264 -profile:v main -level 3.1 -preset medium -crf 23 -x264-params ref=4 -acodec copy -movflags +...
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Downloading videos from Youtube doesn't work via `curl`

I have opened and downloaded via curl some mp4 file from Youtube via F12 hotkey (i.e. from developer menu) and have saved it into J.mp4 but it cannot be replayed. Someone knows Why ? It writes ...
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Can be changed to batch file?

I would like to create a .bat file that converts all .png files in a folder into individual .mp4 files that have the same name as the .png file: This converts a .png into a 30s video, however how do ...
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Which FFmpeg command do I use to passthrough .ts to .MP4?

I have a folder full of .ts files I wanna convert to .mp4 without having to repeat the command for each file. Same quality, same file name (without the old file type at end of name of course) Windows ...
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mpv doesn't play audio from mp4 file

Troubles with mp4 files captured from webcam. I capture video from my webcam with vlc. The captured file is played without issues in vlc, but mpv could not play audio stream.(ffmpeg also doesn't ...
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Converting mp4 to mp3 with ffmpeg fails with: Unable to find a suitable output format for '\ffmpeg'

I want to convert a church service mp4 video into a mp3 soundtrack. I found ffmpeg and I tried a lot of syntax. Even the easiest didin't work. ffmpeg -i 2026857739212839680.mp4 output_file.mp3 From ...
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ffmpeg creates large compressed files for tiny videos?

When compressing very small videos, there seems to be a large overhead in the video container itself. Here are some examples using a single-frame 16x16-pixel all-black image: ffmpeg -f lavfi -i color=...
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Audio is scrambled up when using ffmpeg concat demuxer

I am using ffmpeg's concat demuxer to join different mp4 videos. First I have reencoded all videos with the following command: ffmpeg -i "${file}" -c:v libx264 -c:a aac "${out}" ...
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Uniting various mp4 with various mp3 using ffmpeg

I have 50 parts of mp3 audio files and 50 parts of mp4 video files (without audio) files, which I want to unite into one video. I tried uniting the audio files into one file, then uniting the videos ...
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Re-muxing .MKV to MP4\MV4 while retaining Dolby Digital Plus JOC with FFmpeg

Does anyone know how to remux and keep enhanced AC-3 with joint object control (JOC) with FFmpeg. I'm remuxing a number of video files from MKV to MP4\M4V so they play on the Apple platform (including ...
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