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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AviSynth mp4 Not Supported

(Total beginner) Trying to process an MP4 file using an AviSynth script, as follows: DirectShowSource(inputFile, fps=25, convertfps=true, logfile=logFile) Error message: "DirectShowSource: couldn'...
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2answers
47 views

Corrupt MP4 [recording interrupted]

I was recording an MP4 file using PlaysTV, and my computer had a power fault half-way through the recording. I'm sure that the file contains valid data, it's just that no media player will recognize ...
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1answer
88 views

Avid Media Composer Not Importing MP4s

I just installed Avid Media Composer 8.4.1, and am trying to edit some screen captured MP4s H.264 format I recorded with OBS. However, when I try to import,transcode or link to file the video layer ...
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1answer
15 views

How can I generate a color-correct h264/MP4 from a DPX sequence using ffmpeg?

We are converting a sequence of DPX files into an MP4. When the artist uses Adobe Media Encoder CC to generate the video, the colors match the original DPX. When we use ffmpeg, the video has a reddish ...
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1answer
153 views

Removing MP4 encoding information

Is it possible to remove certain information form a MP4 file? Specifically things like tagging and encoding dates, Writing library and application, Encoding settings... No client needs to know when I ...
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1answer
38 views

How to create MPEG-DASH variants at resolutions where one dimension is not a whole number in pixels?

I've created a bunch of variants and a DASH manifest for Sintel, which more or less works, but does not pass validation. The issue is when I want to scale a video to a specific width, but the height ...
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1answer
26 views

Batch encode to X265 on the Mac

I need to encode thousands of MP4 H264 (mostly) files in a folder hierarchy to H265. Unfortunately Handbrake that I'd normally use have dismal support for batch processing of hierarchies. The ...
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1answer
33 views

Unable to play a specific mp4 file in VLC player in Ubuntu 16.04

I have this mp4 file in Ubuntu which I am not able to play in VLC (VLC media player 2.2.2 Weatherwax). VLC gives the following error in terminal mp4 demux error: cannot create chunks index This ...
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1answer
30 views

Can I reproduce video in 1440×1080 12M MP4 on a Full HD TV?

I am interesting in shooting some amatorial videos (family) with a digital camera. At the moment my camera support AVCHD and MP4. I found AVCHD less compatible and more time consuming to process so ...
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0answers
28 views

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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0answers
75 views

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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66 views

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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702 views

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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0answers
15 views

Ripped by Avidemux AAC-audio from MP4 is not recognized

I'm ripping audio with AviDemux (Audio -> Save audio). Setting is to copy as is. Original codec is AAC. Video is downloaded from YouTube as MP4 and playing very well. But when AAC is saved alone it ...
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0answers
37 views

Audio from MP4 (PS4 capture) Keeps Messing Up when Imported into Premiere Pro

I have tried to import some video captures from a PS4 into Premiere Pro, but everytime I do it, there are silent sections in the audio. It has happened to a few different files. I have cleared all ...
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0answers
21 views

Quicktime and Adobe Premier “Can't Open .mp4” files

I'm getting a "Can't Open .mp4" error message when trying to open or upload files off of an SD card. Some of the files are fine, others are not. You can see the ones that are bad do not show a ...
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0answers
20 views

Compressing a large MP4 file that is on 2.30mins long

I have been sent a video that is only 2.30 mins long. But is a whopping 168mb, unfortunetely this has to be embedded into an app - so I need it as small as possible. I need to get the file size down ...
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17 views

saving after effects as mp4 problems

So.. I'm kinda very much a first timer using after effects, a first timer here too, finished a 7 mins long video for an assignment due in two days from now that will decide whether I will pass, but ...
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0answers
60 views

Trying to play 2 audio tracks at the same time in MPC-HC

Trying to record some footage, but I have two audio tracks - One track is audio from my PC, and the other track is from my microphone. MPC-HC only lets me play one track at the same time. Any ...
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0answers
30 views

MP4 Creation for fast startup

I have transport stream source and recorded this with following ffmpeg command line. ffmpeg -y -fflags +igndts -i udp://127.0.0.1:22500 -map 0 -fflags +igndts -codec copy -bsf:a aac_adtstoasc -...
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478 views

Need to convert an MP4 to an SCR

I need to convert an MP4 video (or any file format that I can export in Adobe Media Encoder, really) to an SCR file for a Windows screensaver. I'd really prefer not to convert it to MP4, then to FLV, ...
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166 views

Where to start Transcoding with FFMPEG?

I would like to learn a lot about Transcoding video files with FFMPEG from any format to mp4 (hH264/AAC) format. We have a large repository of video files ranging from 1 MB to 2 GB of various formats ...