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.

learn more… | top users | synonyms

0
votes
2answers
16 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 ...
2
votes
1answer
83 views

How can I avoid Quicktime Vulnerability with h.264 encoded MP4 files?

I posted this earlier on SuperUser, but realized that this is likely the more appropriate forum for my question. We have several thousand very large MP4 files that have been encoded over the past ...
2
votes
1answer
82 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 ...
1
vote
1answer
65 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 ...
0
votes
1answer
14 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 ...
8
votes
0answers
2k views

Copying h.264 video from TS into MP4 changes frame rate and time

I have large MPEG-TS file that I am converting to MP4 using the below command. If I seek to the same time in the video in both the MP4 and the TS file, the MP4 will be a few frames behind the TS ...
2
votes
0answers
26 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 ...
2
votes
0answers
74 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 ...
1
vote
0answers
59 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 ...
1
vote
0answers
641 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 ...
0
votes
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 ...
0
votes
0answers
14 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 ...
0
votes
0answers
48 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 ...
0
votes
0answers
24 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 ...
0
votes
0answers
415 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, ...
0
votes
0answers
183 views

Recovering damaged-and-badly-recovered mp4 by HEX signature of each frame (and voice)

Question 1: What is the hex signature of EACH frame in an mp4 movie? What is the hex signature of the voice file in an mp4 movie? Question 2: I had mp4 films on a hard disk which was damaged. So I ...
0
votes
0answers
163 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 ...