Questions tagged [mp4]
MP4 is a multimedia container format standard with the file extension .mp4. It can be used to store digital audio/video streams, in addition to other multimedia.
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How to concatenate two MP4 files using FFmpeg? [closed]
I'm trying to concatenate two mp4 files using ffmpeg. I need this to be an automatic process hence why I chose ffmpeg. I'm converting the two files into .ts files and then concatenating them and ...
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Use ffmpeg to add text subtitles [closed]
I am trying to add text subtitles to an .mp4 container using ffmpeg:
ffmpeg -i input.mp4 -i input.srt -map 0.0 -map 0.1 -map 1.0 output.mp4
When I am trying to run this line, it gives me an error :
...
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answer
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Possible Locations for Sequence/Picture Parameter Set(s) for H.264 Stream
I'm working on a H.264 Decoder and I'm wondering where to find the SPS and PPS. My reference literature tells me that those are NAL Units encoded in the H.264-Stream, but when I look into an example-...
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What exactly is Fragmented mp4(fMP4)? How is it different from normal mp4?
Media Source Extension (MSE) needs fragmented mp4 for playback in the browser.
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Safari <input type="file" accept="video/*"> ignores mp4 files
I am using an HTML file input like this:
<input type="file" accept="video/*">
to allow my users to upload videos to my site. This works as expected in all modern browsers (only permitting ...
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10
answers
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Can I have a video with transparent background using HTML5 video tag?
We filmed a spokesperson on a green screen and have the video files ready in multiple formats.
With Flash we could use the wmode transparent within the param and embed tags, but is there something ...
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answer
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ffmpeg settings for converting to mp4 and ogg for HTML5 video [closed]
Despite all the hype, in reality the HTML5 video tag has a bit of a problem. In order to use it and for it to be cross browser compatible, you have to include more than one format of the video. To ...
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Bootstrap 3 - Responsive mp4-video
I tried to find a good solution on the bootstrap site but I didn't get an answer to this yet. I think I can't be the only one struggling with this, but I couldn't find anything that helped me.
I'm ...
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votes
4
answers
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How to output fragmented mp4 with ffmpeg?
ffmpeg -i infile.avi out.mp4 outputs non-fragmented MP4.
How do I obtain fragmented mp4?
Update
A fragmented mp4 file is internally divided into several back-to-back chunks or MPEG-4 movie fragments....
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votes
7
answers
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How to add a MOOV atom in a mp4 video file [closed]
I am working on live device to server streaming in android. I am able to send data in bytes on server but when I play that file during recording on server VLC say that MOOV atom not found. After a lot ...
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MP4 File Format Specification [closed]
I am writing some code to parse MP4 files ...
Is there a free source to get documentation on the MP4 File Format Specification. So far I have only found an ISO document which I would need to purchase ...
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53
votes
2
answers
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Fastest way to extract a specific frame from a video (PHP/ffmpeg/anything)
I have a web page, which (among other things) needs to extract a specific frame from a user-uploaded video. The user seeks to a particular part of a .mp4 in the player, then clicks a button, and an ...
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How do I embed a mp4 movie into my html?
I have a blog section on my site that has the TinyMce editor. I want to embed a video when I post a blog and it's just spitting out the code. I have added the <embed> tag on my output script.
...
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45
votes
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answers
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How to play .mp4 video in videoview in android?
I am working on a video player application, I want to play .mp4 video in the native video view. I am not able to play video using a URL. I am getting the error "Sorry this video cannot be played&...
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Unable to host MP4 files on Azure web site
I am hosting a static website on a reserved web site in Azure (It is PaaS, no access to OS/IIS). I am trying to add some .mp4 videos but when I click on the links I get
The resource you are looking ...
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what is the codec for mp4 videos in python OpenCV
fourcc = cv2.cv.CV_FOURCC(*'XVID')
The above line is used for avi video. In the same fashion, which codec do we use for mp4 videos in Ubuntu?
40
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answers
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Extracting frames from MP4/FLV?
I know it's possible with FFMPEG, but what to do if I have a partial file (like without the beginning and the end). Is is possible to extract some frames from it?
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answers
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<video> plays in other browsers, but not Safari
We have an MP4 video on our site; it plays fine in IE9+, Firefox, Chrome, and Chrome on mac. However, on Safari, the video doesn't play at all - it does trigger a "stalled" event and then nothing ...
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Anyone familiar with mp4 data structure?
Where in the mp4 file structure is the duration of it?
38
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answers
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Post processing in ffmpeg to move 'moov atom' in MP4 files (qt-faststart)
Is it possible to run ffmpeg from the command line which will either place the 'moov atom' metadata in the beginning of the MP4 file or run the qt-faststart as a post processing operation in ffmpeg so ...
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votes
4
answers
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Live streaming through MP4
I am working on an online TV service. One of the goals is for the video to be played without any additional browser plug-ins (except for Flash).
I decided to use MP4, because it is supported by the ...
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Adding watermark bitmap over video in android: 4.3's MediaMuxer or ffmpeg
Here is my scenario:
Download an avi movie from the web
Open a bitmap resource
Overlay this bitmap at the bottom of the movie on all frames in the background
Save the video on extarnal storage
The ...
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31
votes
4
answers
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Using php to output an mp4 video
Ok basically I have a project that requires that videos are hidden from the users while still able to see them (by using php). here's what i got so far:
The video.php file has this:
<?php
$ch = ...
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answers
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Converting an HLS (m3u8) to MP4 [closed]
Can anyone advise on how to construct an MP4 file from an HLS stream (the reverse of what you usually want)? Say I have the m3u8 - is there a straightforward way of getting a single MP4 using FFMPEG ...
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answers
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Repairing a Corrupt MP4 Video File [closed]
I have an MP4 video that I took with a Flip camera. The camera froze up while I was stopping the recorder and now the video appears corrupt. I can still download it off the camera, but it won’t play. ...
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3
answers
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How to load videos from assets folder? (to play them with VideoView)
I need to open a mp4 video from the assets folder and play it with VideoView.
I tryed with these two options, but none of them works....
mVideoView.setVideoPath("file:///android_asset/videos.mp4");
...
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answers
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How to get video duration from mp4, wmv, flv, mov videos
Alright. Actually i need mostly the mp4 format. But if it is possible to get for other types as well that would be nice. I just need to read the duration of the file. How can i do that with C# 4.0 ?
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answers
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convert from jpg to mp4 by ffmpeg
I have 320 jpg(320x574) images which I have recorded them with 2004 fps. I want to make a .mp4 video of them. I have run below codes in cmd (win7) and it just make a video of jpg number 320 and if I ...
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Another: Force Chrome to fully buffer mp4 video
I've seen a few threads about this, but with no answers, so I thought I'd add another to the grave yard of polluted youtube related pages.
I've got a 100MB mp4 video that needs to be fully downloaded ...
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2
answers
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m4a mp4 file format what's the difference or are they the same?
I've looked and can't seem to find a concrete answer.
My client wants to play sound clips on his website, currently he has over 2000 clips which are in m4a format.
A lot of the audio players I have ...
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Save continuous RTSP stream to 5-10 minute long mp4 files
How can I keep the flow (protocol rtsp, codec h264) in file (container mp4)? That is, on inputting an endless stream (with CCTV camera), and the output files in mp4 format size of 5-10 minutes of ...
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votes
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answers
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Convert compressed swf to mp4
I'm looking for a batch script to convert swf to mp4, lossless. I tried using both ffmpeg and handbrake, but apparently swf is compressed and I can't convert them this way.
ffmpeg -i input -c:v ...
- 3,108
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2
answers
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Is there a downside to putting the MOOV atom at the beginning of an MP4 file?
I see tons of questions about relocating the moov atom from the end of a MP4 video container to the beginning, to make the video "web optimized" or easier to stream. It seems like most tools require ...
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what is difference between mp4 and mpegts?
Recently I had a task to convert the file format to mp4 and stream it. I have used ffmpeg as the transcoding tool. The MP4 file doesn't get streamed over the http protocol [have used php cgi wrapper], ...
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answers
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how play mp4 video in google colab
I have a video.mp4 in content/video.mp4
if I wanted to play the video in google colab without downloading , ¿what code I should use to open a kind of video player in my jupyter notebook?
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How do I add a custom thumbnail to a .mp4 file using ffmpeg?
I am trying to find the proper ffmpeg command to add a .png or .jpg image to a .mp4 video as a thumbnail. The command will eventually automatically be executed by a C# program.
This is what I have ...
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How to remove or edit Exif from mp4 video?
I recorded a Full HD video with Samsung Galaxy II, when I uploaded it to YouTube I found that it turned to 90 degrees like Portrait layout 1080x1920 NOT 1920x1080.
I found the cause of the problem:
...
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converting all the mp4 audio files in a folder to mp3 using ffmpeg [duplicate]
how can I convert all of the mp4 files in a given folder to mp3 using ffmpeg.
Almost all of the links I have seen on google is all about converting mp4 video to mp3.
I can do this via VLC player but I ...
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Fastest way to add -movflags +faststart to an MP4 using FFMPEG, leaving everything else as-is
I want to add -movflags +faststart to an mp4 file. Basically that is all I want to do, nothing else should be changed. I am using ffmpeg.
What's the fastest way to do this? Do I have to re-encode the ...
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Pre-Load or Pre-Buffer .mp4 video in android app development
I am building an app that is successfully displaying an MP4 video file onButtonClick. I want to pre-buffer or preload the video's URI (remote url) so that it doesn't delay the playing of the video ...
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answers
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FFMPEG: Transmux mpegts to mp4 gives error: muxer does not support non seekable output
When piping mpegts to ffmpeg, which should convert it to mp4 and pipe to stdout, ffmpeg says: "muxer does not support non seekable output".
After a lot of research I came to the conclusion that mp4 ...
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answers
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VLC: How to Create a Genuine MP4 (not M4V) File?
At "File -> Convert/Stream" menu item, applying "Video - H.264 + mp3 (mp4)" profile will result in a file in m4v format instead of mp4!
Now, changing the extension from m4v to mp4 will work on some ...
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Save real time video recording to sd-card using Local Socket in Android - Video not playable
Trying to capture a video and save it to sd card in Mp4/3gp formats using local socket. Being able to write bytes by bytes to sd card but the video file is not playable.I have gone through many ...
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Unable to play MP4 video file from mainBundle
So I'm trying to play a simple intro animation video file that I've dragged into my project in XCode and therefore should be able to play from my mainBundle, right?
With this code:
NSURL *urlString ...
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2
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Python OpenCV video.get(cv2.CAP_PROP_FPS) returns 0.0 FPS
This is my video
This is the script to find fps:
import cv2
if __name__ == '__main__' :
video = cv2.VideoCapture("test.mp4");
# Find OpenCV version
(major_ver, minor_ver, subminor_ver) ...
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Can MIME types of Github Pages files be configured?
We have an MP4 video file in a Github Pages repository. The file is being served with a MIME type of application/octet-stream, which means Internet Explorer doesn't like it. It should be served as ...
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How to get better quality converting MP4 to WMV with ffmpeg?
I am converting MP4 files to WMV with these two rescaling commands:
ffmpeg -i test.mp4 -y -vf scale=-1:360 test1.wmv
ffmpeg -i test.mp4 -y -vf scale=-1:720 test2.wmv
I've also tried:
ffmpeg -g 1 -b ...
- 191k
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2
answers
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Playing MP4 files in Firefox using HTML5 video
I have searched around quite a bit but have not solved my problem.
I have a video tag running as follows:
<video
class="ne"
src="{{ page | video_url }}"
muted="true"
volume="0"
...
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votes
1
answer
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How To Convert MP4 Video File into FLV Format Using FFMPEG
i have to Convert MP4 Video File into FLV Format Using FFMPEG which i received from different mobile device. i found most of the stuff to convert flv video into mp4 and all.
can any body help me out ...
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Parsing H264 in mdat MP4
I have a file that only contains the mdat atom in a MP4 container. The data in the mdat contains AVC data. I know the encoding parameters for the data. The format does not appear to be in the Annex B ...
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