Questions tagged [mp4]
A digital multimedia container format most commonly used to store video and audio, but which can also be used to store other data such as subtitles and still images.
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moov atom not found
I downloaded this video using youtube-dl's HLS downloader. The video was being HLS streamed using AES-128. Even though I could view it perfectly fine when it was being streamed in the browser, VLC ...
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DaVinci Resolve 16 - Can you embed markers as chapters into the rendered metadata?
In DaVinci Resolve 16, I see that you can edit the Metadata and that will get embedded into the mp4 container. I also noticed that if an mp4 has embedded Chapters that Resolve doesn't recognize those ...
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Stabilize MP4 from gyroscope metadata? (Insta360)
I just got an Insta360 One R 1-inch sensor and the footage is shaky as hell. I realised that you need their desktop application to actually stabilise in post-production but since I'm on Linux this is ...
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Sony AVC vs. MAGIX AVC vs. MainConcept MPEG-2: what's the difference?
In VEGAS Pro 16.0 I'm given (at least) three options if I want to render a 1080p 30fps video for YouTube upload:
Sony AVC/MVC, template "Internet 1920x1080-30p"
Use this setting to create the ...
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Extract file thumbnail from mp4 file
I'm currently converting a few mp4 file to mkv. In the process they lose their file thumbnails and I wanted to keep them. So I'm searching for a way to extract the custom thumbnails from the mp4 files ...
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what encoder can take advantage of 16-core setup? converting/ripping Blu-ray to mp4 format
I'm thinking of upgrading my 6-core setup (single CPU) setup to a 2x8-core/CPU setup. I'm wondering what software will allow me to fully utilize all the cores.
I've been using handbrake but I do not ...
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Using GoPro Studio to edit non-GoPro videos
I'm trying to use GoPro Studio to create a video that includes GoPro video as well as HD video from an iPhone. GoPro Studio was not able to deal with the .MOV file from the iPhone (the audio was ...
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Set ipad compatible thumbs for mp4 videos based on a frame of the video with command line
I have a directory of 100 mp4 files. All are working well on my ipad but most of them do not have a working thumb.
I want to generate these thumbs with a command line command (on macosx) based on a ...
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ffmpeg h264 to mp4 conversion from multiple files fails to preserve in-sequence resolution changes
This will be a long post, so I thank you in advance for your patience in digesting it.
Context
I have different sources that generate visual content that eventually need to be all composed into a ...
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How to convert camrec to mp4 using ffmpeg?
I raise such problem but in the same post I raise the solution.
The first thing to know is that the .camrec format (from Camtasia) is a compressed file, so we must first decompress these files before ...
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DVD similar menu for USB with mp4 movies that work on SmartTV with USB?
I have converted my old VHS-movies to MP4 and put them on a USB to be able to watch them on my smartTV which works well. However, I want a DVD-simular menu where I can have a description, and maybe a ...
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Video Stream Loop FFMPEG for YouTube, what is missing here?
I am using FFMPEG for streaming 24/7 mp4 video on youtube.
The video is somewhere in 2 minutes, the stream starts but does not go on replay, what should I do?
I am using this code:
@echo off
d:
cd &...
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same image MP4 and png color differences
I'm making a 3D animation but, parts of it need to be static. I can use png renders for that, but pang format have slightly another color than mp4's. Because of this, ther's a visible difference when ...
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VLC doesn't play mp4v video converted with VLC to h264/h265
VLC reports the original video as:
Codec: MPEG-4 Video (mp4v)
Video resolution: 8192x8192
Frame rate: 7.549296
I am using the Convert / Save option to convert the video using the following profile:
...
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How to convert Fast Mpeg 4v2 (mp4v) with ffmpeg
I have problem with ffmpeg properly recognizing a video encoded with Microsoft Fast Mpeg 4v2 codec. Apparently it's a software codec. VLC plays the video fine. The codec reported by VLC is:
Codec: ...
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Why does audio not work for this mp4 when played on IPad with headphones plugged?
I'm hosting this video : https://itype.techforge.com.au/assets/videos/repeated/WordRat.mp4.
It seems to work fine unless you happen to be on an IPad and plug the headphones in. With the headphones ...
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Merge mp3 with jpg and add moving volume as background
I'm trying to put an image with a song and save it as a mp4.
But I need some app makes me able to add simple moving edits to the background like Volumes moving
Something like this :
I wish you can ...
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Premiere Pro on Windows 10 N version - Can't import MP4
I've tried to install various codecs - not working.
I still can download whole Media Feature, but that's what I would like to avoid, since N version is way lightier.
Can you please advice me how I ...
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Screen-Video with 7 FPS (in Davinci Resolve - or other tools?)
I currently edit/cut a lot of computer screen recording footage. The original mp4 files have 7 FPS and I am totally happy with that quality. If I now edit the files in Davinci Resolve 16, the lowest ...
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MP4 Video created with ffmpeg C++ api does not show in OSX
I am writing a MP4 video from scratch using the C++ API (libav* 4.1.1). This video can be played back just fine using ffplay or VLC. But the Finder Preview and the Quicktime Player on OSX (10.13 and ...
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What's wrong with VLC seeking and/or MKV created by ffmpeg?
I have creeated a video using FFmpeg. It is a result of putting 4 videos together, tiled, using -filter_complex with overlays.
Following the how-to here, I have it created as MKV.
When playing this ...
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Audio in source footage cuts out and starts over a third of the way through (Premiere Pro CS6)
This is a very odd issue that I have been experiencing with a particular video clip.
I have a 2 hour long clip that stops the audio at exactly 00:45:21:03 and starts over, as in the audio from the ...
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ffmpeg: How to avoid "start: 0.033333" when extraction audio from mp4
When extracting audio and video separately from a mp4 and recombining again
ffmpeg -accurate_seek -ss 30 -t 10 -i input.mp4 -vn output-audio.mp4
ffmpeg -accurate_seek -ss 30 -t 10 -i input.mp4 -an ...
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Change resolution according to bandwidth at the start of the video
The use case described here is very much the same as the YouTube's feature where a lower resolution of the video is selected if the user's network speed is low. But, I'd like to do this only at the ...
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FFMPEG MXF -> MP4 - Cannot get proper audio on output file
I am software developer working on a project that requires my video files to be an mp4 format, as this is what most vendors support. I am trying to use ffmpeg, to rewrap the MXF file, into an mp4.
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ffmpeg h264 crashes IE intermittently
First for moderators, this is relevant because I have incorporated ffmpeg in a program to render videos needed for a web-app.
My problem is that the videos I render randomly crash IE 11. Other ...
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Losing audio in re-encoding with ffmpeg
I have some DVDs I want to save MP4s from. The video files are VOB files. I can play them if I change the extension to .mp4, but I can't use the seek bar in Windows Media Player. Also, the files are ...
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Switching between H.264 video streams on the fly?
I have several H.264 encoded MP4 files, as well as still images. From these I want to generate a single video stream that I can broadcast. The stream will be composed of alternating still images and ...
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Help me with corrupt video mp42
Hello I have one corrupted video file created with Chinese Camera DV4K_V23.
I created one small sample video from this camera and I uploaded it for someone to help me, to decipher exactly which ...
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'FFMPEG: moov atom not found' on my dash cam videos
I have several dash cam videos. The first 3 of them are opened through the VLC. Other files - no
When trying to open them ffmpeg:
ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the ...
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variable timestamps for audio samples in MP4
Consider the following ffprobe output for a MP4 file. This is an extraction of first 10 frames in the audio stream and its metadata. The audio stream has a sampling rate of 48000, and is encoded with ...
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Use ffmpeg to transform rtsp stream containing B-Frames and no DTS into fragmented mp4
The goal is to play a rtsp video stream in the chrome browser using Websocket and MSE. The structure of the system looks almost identical to https://stackoverflow.com/questions/73562944/ffmpeg-live-...
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Final Cut Pro v. 10.6.6 - fcpxml file with reference to mp4 file via url works, but only after closing/reopening library
I'm writing software that exports fcpxml files to allow import of video clips into Final Cut Pro.
The file looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<!...
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Why is my video that worked fine previously glitching now?
Recently I revisited my old kickstarter project, just to find that the video produced heavy glitches, as shown in the picture below. These were (and are) not there in the original .mp4, and only ...
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mixing H.264 and AV1 in a single DASH manifest?
I used the example in the ffmpeg-all man page to write an ffmpeg command line to build an MPEG-DASH stream with multiple encoding options from a single source file:
ffmpeg -i <input>.mp4 -map 0 -...
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Jumping forward or backward in a .mp4 file takes a long time in VLC
Recently, I randomly played around a bit with the video encoder settings of my OBS Studio (29.1.2) and recorded a video playing in the browser. In this particular video (recorded with some settings I ...
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Issue with repairing 3GP video using untrunc - Error: bad track: 's263'
I am trying to repair a corrupted 3GP video using the untrunc program, but I'm facing an issue due to an error.
The command I ran:
./untrunc -v ~/Desktop/logic/Video0086.3gp ~/Desktop/logic/Video0035....
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Replace MP4 I-Frames with a placeholder
I have an MP4 file which I want to manipulate on a hex basis, without re-encoding. More specifically I want to replace the I-Frames of the MP4 file with a kind of placeholder code.
What I want to do ...
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Converting DVD (VIDEO_TS) to MP4 (h.264/h.265) using VLC plays only audio or video but not both
Opening the converted .mp4 file with windows 10 mediaplayer doesn't play the audio but does play the video.
Opening the converted .mp4 file with the same VLC used to convert the DVD to MP4 doesn't ...
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mp4 videos not supported by powerpoint
I have used ffmpeg-2022-05-26 to convert simple .avi to .mp4 and these videos get supported on almost all platforms, including PowerPoint. When I updated ffmpeg to the version released around 2023-05-...
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Handbrake Output Visually Freezes on Interstitial
I downloaded an m3u8 stream using a Chrome plugin, and it created an mp4 file which I can play fully in VLC.
Next, I am attempting to use Handbrake to encode this file to be played on an old iPod Nano....
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How to Stabliize Video when foreground and background are similar?
I have a video of a lizard. The lizard matches its environment very well making it difficult for predators and algorithms to distinguish it from the background. I've tried using 3 different online ...
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Command to get only one audio track in output specified by language code with ffmpeg
Ffmpeg Command to get video with only English audio or only one language audio
I tried running ffmpeg -i input_video.ext -map 0:v -map 0:a:language=eng -c:v copy -c:a copy -map_metadata -1 -sn output....
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Why is my rendered video output larger than imported files?
I have imported multiple video files (roughly 3h30min / roughly 11GB). I have stripped out the Audio and reduced my total cuts to roughly 2m12sec. I have tried multiple render video output formats, ...
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FFmpeg recover_mp4 help
ive been using ffmpeg and recover mp4 to try and restore a dashcam video from a car accident. im a beginner using this method/ software and im running into this issue. not sure how to "increase ...
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Gray screen issue after recovered video with ffmpeg
After recovered ".mp4" videos from mobile phone, some videos were corrupt. I used the FFMPEG method to fix the videos. Some CMD commands below;
First Code: recover_mp4.exe good.mp4 --analyze
...
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How much better is Thunderbolt external HDD for video editing?
For the two activities of
transferring 10GB-large mp4 (.mts) video files from external HDD
to laptop, and
editing these same files directly on the connected external HDD drive,
how much better/...
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Converting MTS to MP4 gives strange artefacts
I am converting video taken with various personal cameras in .MTS format to mp4 in order to reduce the file size. I am getting some strange artefacts and I wonder what simple mistake I am making?
...
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How to add subtitles choices to MP4
So I have a Mp4 file, and I want to add multiples subtitles choices to it that will stay forever. A bit like how YouTube, like there are the subtitles choices, and you select which one you want or ...
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why does video need to be in video container files? and why do those file need to be in multimedia container files?
this might be a tough question but i feel the need to ask
why does video need to be in video container files? and why do those file need to be in multimedia container files?
when people where first ...
