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Questions tagged [mpeg-4]

MPEG-4 is an ISO/IEC standard for video and audio compression as a successor of MPEG-2. It has much more complex capabilities including arbitrary shaped videos and new ways of synthesis.

MPEG-4 is an ISO/IEC standard for video and audio compression as a successor of MPEG-2. It has much more complex capabilities including arbitrary shaped videos and new ways of synthesis.

More information about MPEG4 is at http://en.wikipedia.org/wiki/MPEG-4

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Any suggestion for a reliable video format for industrial applications?

I am currently using videos encoded in MPEG4 (h264). This makes the content of the frames rely on the content of other frames. In my case this is undesirable as I often need to quickly split video files without re-compressing or altering the…
fstab
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ffmpeg can play video but not a stream containing the same data

This is my first time encountering video codecs/video streaming. I am receiving raw h.264 packets over TCP. When I connect to the socket, listen to it and simply save the received data to a file, I am able to play it back using ffplay…
Robbsen
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Matlab - vision.VideoFileReader never reads audio samples

I tried to read a video (and it's audio) using vision.VideoFileReader like this: video = vision.VideoFileReader('test.mp4', 'AudioOutputPort', true); while ~isDone( video ) [frame, audioSample] = step(video); end However, audioSample is…
DimChtz
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How to start single RTSP session with multiple video subsession(H264 & MPEG4) using live555?

I am able to start single RTSP Server session with 2 H264 sub-session as both are supposed to have same SDP description but when my both sub-session are of a different type (1 H264 and 1 MPEG4 ) I am not able to start streaming.
Ravi Agola
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Streaming Encoded MPEG-4 live video from a web camera using RTP in C++

I have been working on building a video streamer from a webcam using RTP protocol in C++ language in Linux. I was able to use opencv to take frames from the webcam and send them frame by frame to a client app that shows those frames one by one using…
Maad A.Galil
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Export GPS Points from Dash Cam with FFMPEG?

I have a Garmin Dash Cam 35 that outputs an MP4 that appears to have the GPS data I need encoded in the MP4. I've seen claims that they're using SEI messages to do this, but using Intel Video Analyzer I'm not able to see those types of SEI…
Steve
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How to play MPEG-4 multicast streaming on VLC

I want to play MPEG-4 Part 2 multicast streaming on VLC, but can not. MPEG-2 and H.264 multicast streaming was able to play. How can I play it? OS: Windows 8.1 Pro 64bit VLC Version: 2.2.4 Command: vlc -I dummy -vvv…
nkmr
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writing audio and video into mpeg-4

any helpfull documents are available in web
evan
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mp4v2 extracting and decoding data from .M4A file

I have extracted the audio data from .m4a file using mp4v2 library (sample-by-sample). Does this library have function that decodes the data? Anybody with experience with this library and can provide some help? The documentation says: MP4ReadSample…
mbaros
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Where to inject code to print out motion vectors and DC coefficients inside ffmpeg lib

For research purposes, I need to extract information about motion vectors and DC coefficients from an MPEG4 video. I have inserted many printf into virtually each function inside mpeg4videodec.c and recompiled the ffmpeg library then executed…
Kindermann
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Split fragmented MP4 into multiple MP4 files

We're trying to parse the fragments of an fMP4 file into separate independent MP4s. Can anyone help point us in the right direction to do this, or is there any open source code that exists that we could leverage?
Andy
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How to calculate the real duration of a mp4 video with the PPS and SPS?

I have only raw H264 video data (video frames) and its PPS and SPS information. How can I calculate the real duration of this video? (I have no moov atom, no audio data)
TOP
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For modifying MPEG-2 Part 4 video, which is the easiest library/approach can I use?

I'm trying to implement a video watermarking system which modifies a subset of individual pixels (i.e. the RGB values at sets of x,y). The base use case would be modifying an MP4, which consists of modifying the contained MPEG-2 Part 4 Video…
liamzebedee
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h.264 udp stream decoding

I receive h.264 data throught UDP on Android. It looks, like a receive NAL units. What I want to do, is to extract the raw mpeg packets, that I can then push to my player. I use ijkplayer(build on ffmpeg) and it does not work if I push exactly the…
kvgr
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Bitstream analyzer for MPEG-4 Part 2

Why do most commercial bitstream analyzers not support MPEG-4 Part 2 (MPEG-4 Visual), i.e. codecs such as DivX and XVid? I tried out the one from Codecian and checked out the features of Elecard software. Neither of them seem to support MPEG-4 Part…
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