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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.

MPEG-4 Part 14 or MP4 (formally ISO/IEC 14496-14:2003) is a multimedia container format standard specified as a part of MPEG-4. It is most commonly used to store digital video and digital audio streams, especially those defined by MPEG, but can also be used to store other data such as subtitles and still images.

More details at MP4 in WikiPedia

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How to loop mp4 file in UIWebView

I would like to loop a mp4 file in UIWebView. e.g. If you go to this link (http://techslides.com/demos/sample-videos/small.mp4) to open UIWebView, you won't be able to play it in loop. But I would like to watch this mp4 video for loop and loop…
user1574429
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mp4 not playing in Firefox 35 on Mac, wrong MIME type?

I got two mp4-Videos, both with the same codes (h264 for video and aac for audio), which are returning different mime types on linux: $ file --mime-type one.mp4 one.mp4: video/mp4 $ file --mime-type two.mp4 two.mp4: video/qicktime two.mp4 wont…
Andy
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Where to begin for writing a video streaming application in C#?

I want to make an application where I could contact the server (computer hosting a mp4 video file) and then it would stream and play the video. The streaming and video playing would take place in the same application. I have no idea where to begin.…
Schwarz
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How do I know the structure about avc3 of mp4 box?

I've got some tools of analyzing mp4 stream such as Mp4 Explorer, MP4 Reader and mp4viewer(by python). None of them can show what structure avc3 has But I can see avc1. So I've been looking avc3 from ISO-ISE 14496-12, QuickTime format(from apple's…
jay
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MP4 MOOV atom for progressive playing

I'm looking a way to create a MOOV atom that would allow an user to reproduce an MP4 file while it is still transcoding (for example the transcoding of an endless stream like a the one from a security camera) I think that the only way I could do…
Gerard Garcia
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Converting mp4 to webm in a batch

I have a large batch (400+) of mp4 files I wish to convert to webm. I've tried: ffmpeg -i myfile.mp4 -c:v libvpx -minrate 1M -maxrate 1M -b:v 1M myfile.webm but the file is corrupt when I try to play it. Could anyone help? Here is input data for…
pomegranate
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Android Mediarecorder: How to add new codec in MPEG_4 or any audio format

I written an app for recording voice with Mediarecorder. public void Record(int t) { final int time = t * 1000; Thread sound = new Thread(new Runnable() { @Override public void run() { …
M.Rezaei
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add mp3 sound using ffmpeg on android

I'm trying to make a mp4 from an app on Android, to do so i added the FFmpeg binary. to create the mp3 i use a command : ffmpegBinaryPath + " -r 24 -i " + inputImgPath + " -c:v libx264 -crf 23 -pix_fmt yuv420p -s 640x480 " + outputVideoPath; But…
user2335528
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GStreamer Tee : x264enc + jpegenc -> deadlock?

I have the following GStreamer commands working : 1°) streaming 2 MJPEG streams over TCP : gst-launch-1.0 v4l2src device=/dev/video0 ! deinterlace mode=1 ! videorate ! videoscale ! tee name=tp \ \ tp. ! queue ! video/x-raw, framerate=10/1,…
Tim Autin
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Django embed m4v from static locally

How would you embed a static file with .m4v extension , M4V is a file format,
Bob
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VideoSink.OnSample to MP4 - Windows Phone 8.1

I'm developping a Windows Phone 8.1 Silverlight application based on Camera raw stream. I need to make video samples before sending it to a distant server. I've implemented a custom VideoSink class that overrides the 4 methods…
McSIME
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Azure Media Services encoded mp4 file size is 10x the original

I uploaded a 15MB mp4 file and chose the "Playback via HTML5" option for encoding. It created a new mp4 file that is now 158MB! This is 10x larger in size, why does this happen? In fact, every encoding preset that I choose makes the file size much…
Brandon Spilove
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mp4 conversion using users computers instead of server processing power?

I have a video service where users upload their videos and I need to convert it to mp4 in several resolutions, there is a way using html5 or java (ideally not java) where when the user upload his video run an mp4 conversion using his computer power…
educacion disruptiva
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MediaStreamSource Raw AAC Frame Size from Mp4 container

I need to send raw AAC audio frames one at a time to my decoder. I was able to parse the raw AAC bitstream from an MP4 file container, but I'm unable to find any solutions or a way to determine audio frame size. I have used C# to parse the AAC…
Cirano cornell
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Video on OSX in Firefox won't play from website?

I'm encountering an issue where: mp4, .webM and .ogg are not working in Firefox, specificly on Mac's OSX.. and only in Firefox, when viewing my page on a Windows Computer wth Firefox, it however works…
Gerwin
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