Questions tagged [h.264]
H.264/MPEG-4 Part 10 or AVC (Advanced Video Coding) is a standard for video compression
h.264
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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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FFMPEG (libx264) "height not divisible by 2"
I am trying to encode a .mp4 video from a set of frames using FFMPEG using the libx264 codec.
This is the command I am running:
/usr/local/bin/ffmpeg -r 24 -i frame_%05d.jpg -vcodec libx264 -y -an ...
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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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ffmpeg usage to encode a video to H264 codec format
I have a *.mp4 video file(MPEG4 video codec) and I am trying to convert this to a H264 video codec format(raw h.264 format) using ffmpeg on Linux(Version - FFmpeg version SVN-r0.5.1-4:0.5.1-1ubuntu1, ...
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How to use VideoToolbox to decompress H.264 video stream
I had a lot of trouble figuring out how to use Apple's Hardware accelerated video framework to decompress an H.264 video stream. After a few weeks I figured it out and wanted to share an extensive ...
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What is the difference between H.264 video and MPEG-4 video? [closed]
Are these both the same? Is H.264 codec of MPEG-4? What if I need to convert flv to high definition H.264 video format? I want make online tv streaming and want to use PHP or Python.
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How does one encode a series of images into H264 using the x264 C API?
How does one use the x264 C API to encode RBG images into H264 frames? I already created a sequence of RBG images, how can I now transform that sequence into a sequence of H264 frames? In particular,...
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h264 lossless coding
Is it possible to do completely lossless encoding in h264? By lossless, I mean that if I feed it a series of frames and encode them, and then if I extract all the frames from the encoded video, I will ...
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errors when decode H.264 frames using ffmpeg
I am getting the following errors when decoding H.264 frames received from the remote end of a H.264 based SIP video call. Appreciate any help in understanding there errors.
non-existing PPS 0 ...
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How to process raw UDP packets so that they can be decoded by a decoder filter in a directshow source filter
Long Story:
There is an H264/MPEG-4 Source
I can able to connect this source with RTSP protocol.
I can able to get raw UDP packets with RTP protocol.
Then send those raw UDP packets to a Decoder[h264/...
- 2,285
44
votes
4
answers
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Convert videos from .264 to .265 (HEVC) with ffmpeg
I see that there are a few questions on this subject but I am still getting errors. All I want to do is convert videos in my library to HEVC so they take up less space.
I've tried this:
ffmpeg -i ...
- 441
38
votes
5
answers
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Suggested Compression Ratio with H.264?
Note bene: I realize this is an immensely complicated question with about a million levels of nuance that I'm trying to reduce to a single number...
I'm about to undertake a large video encoding ...
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How to encode Bitmaps into a video using MediaCodec?
I would like to encode a set of Bitmaps that I have into an h264. Is this possible via MediaEncoder? I have written some code in order to do it, but the output cannot be played in any media player I ...
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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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How to use hardware accelerated video decoding on Android?
I need hardware-accelerated H.264 decoding for a research project, to test a self-defined protocol.
As I have Search on the web, I have found a few ways to perform hardware-accelerated video decoding ...
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Raw H264 frames in mpegts container using libavcodec
I would really appreciate some help with the following issue:
I have a gadget with a camera, producing H264 compressed video frames, these frames are being sent to my application. These frames are ...
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4
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How to get h264 video info?
How can I get specific h264 video information from video file? I need to know profile (Baseline/Main/High) and is there B-Frames in movie?
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How can I convert .MTS file (AVCHD) to .mp4 by ffmpeg without re-encoding H264 video stream correctly?
I posted an same question to another community Video Production that I've found later, and which seems to be a better place for this question:
See: https://video.stackexchange.com/questions/12156/how-...
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3
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Decoding Raw H264 stream in android?
I have a project where I have been asked to display a video stream in android, the stream is raw H.264 and I am connecting to a server and will receive a byte stream from the server.
Basically I'm ...
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MediaCodec and Camera: colorspaces don't match
I have been trying to get H264 encoding to work with input captured by the camera on an Android tablet using the new low-level MediaCodec. I have gone through some difficulties with this, since the ...
- 1,803
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convert H264 video to raw YUV format
Is it possible to create a raw YUV video from H264 encoded video using ffmpeg? I want to open the video with matlab and access Luma, Cb and Cr components frame by frame.
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Encoding H.264 from camera with Android MediaCodec
I'm trying to get this to work on Android 4.1 (using an upgraded Asus Transformer tablet). Thanks to Alex's response to my previous question, I already was able to write some raw H.264 data to a file,...
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What h.264 format loads on android AND IOS?
Theoretically both IOS and ANDROID will play h.264 files, but I can't figure out a setting to encode them so they actually work cross platform. Does anybody know how to encode for both Android and IOS ...
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Embedding a live RTSP stream of H.264 video in a webpage
I have a server providing live H.264 video over a network via RTSP (rtsp://...), and I've been trying to find a way to display the stream to users in their browser (on at least Windows and OS X - ...
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Fetching the dimensions of a H264Video stream
I am trying to fetch the dimensions (Height and width) from a H264 stream. I know that to fetch the same details from a mpeg2 stream you have to look at the four bytes following the sequence header ...
- 291
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Thread count option in FFmpeg for FASTEST conversion to h264?
I need to maximize speed while converting videos using FFmpeg to h264
Any input format of source videos
User's machine can have any number of cores
Power and memory consumption are non-issues
Of ...
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Decode android's hardware encoded H264 camera feed using ffmpeg in real time
I'm trying to use the hardware H264 encoder on Android to create video from the camera, and use FFmpeg to mux in audio (all on the Android phone itself)
What I've accomplished so far is packetizing ...
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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 does this H264 NAL Header Mean?
0000 0109 1000 0001 6742 0020 e900 800c
3200 0001 68ce 3c80 0000 0001 6588 801a
As far as I know, 0000 01 is the start prefix code to identify a NAL Unit. What does "09 .... " mean? Is it the ...
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Best video format for HTML5?
I've got a set of videos that are going to be posted on a new site I'm developing, using our new html5 player. I know Firefox only supports .ogg format, whereas most others (including eventually IE9) ...
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How to use MediaCodec without MediaExtractor for H264
I need to use MediaCodec without the MediaExtractor and I'm reading the file using a FileInputStream. Currently it is not working, it is showing a greenish scrambled image on the screen.
This is the ...
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extracting h264 raw video stream from mp4 or flv with ffmpeg generate an invalid stream
I'm trying to extract the video stream from an mp4 or flv h264 video (youtube video) using ffmpeg. The original video (test.flv) play without trouble with ffplay , ffprobe gives an error as follow:
...
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Convert mp4 to maximum mobile supported MP4 using FFMPEG [closed]
I would like to use ffmpeg to convert an mp4 to 'low size' mp4 ...
I need an mp4 file with h263 video and aac audio (or some other settings supported by low cost mobile.) My main concern is that the ...
- 1,679
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In h264 NAL units means frame.?
I am working on a h264 video codec. I want to know: Is a single NAL unit in H264 equivalent to one video frame?
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Encoding FFMPEG to MPEG-DASH – or WebM with Keyframe Clusters – for MediaSource API
I'm currently sending a video stream to Chrome, to play via the MediaSource API.
As I understand it, MediaSource only supports MP4 files encoded with MPEG-DASH, or WebM files that have clusters ...
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Forcing Mpeg2Demultiplexer to use ffdshow to render H264 Digital TV Video
I spend a lot of time trying to make DTVViewer sample of DirectShow work unfortunately with no success. The video format of DVBT network is H264 and I found that the IntelliConnect behavior of ...
- 1,339
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3
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Extracting h264 from CMBlockBuffer
I'm using Apple Video Toolbox framework to compress raw frames captured by the device camera.
My callback is being called with a CMSampleBufferRef object that contains CMBlockBuffer.
The CMBlockBuffer ...
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3
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H264 frame viewer
Do you know any application that will display me all the headers/parameters of a single H264 frame? I don't need to decode it, I just want to see how it is built up.
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RTSP h.264 in google chrome browser
After we are moving over to html5 and many browsers like Google chrome bans VLC web plugin....
Is there any way to play h.264 / h.265 Rtsp streams in browsers this days?
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H.264 conversion with FFmpeg (from a RTP stream)
Environment:
I have an IP Camera, which is capable of streaming it's data over RTP in a H.264 encoded format. This raw stream is recorded from the ethernet. With that data I have to work.
Goal:
In ...
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0
answers
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Incorrect presentation timestamps when seeking backwards through MP4 video
I'm using MediaCodec and MediaExtractor to play video at variable rates, both forwards and backwards. The code is using something like SpeedControlCallback to establish inter-frame pauses - feeding ...
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H264 with multiple PPS and SPS
I have a card that produces a H264 stream with a SPS (Sequence Parameter Set) and a PPS (Picture Parameter Set), in that order, directly before each I-Frame. I see that most H264 streams contain a PPS ...
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How to decode H.264 video frame in Java environment
Does anyone know how to decode H.264 video frame in Java environment?
My network camera products support the RTP/RTSP Streaming.
The service standard RTP/RTSP from my network camera is served and it ...
user262186
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3
answers
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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 ...
- 3,596
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ffmpeg copyts to preserve timestamp
I am trying to modify an HLS segment transport stream, and preserve its start time with ffmpeg. However the output does not preserve the input file's start_time value, even if -copyts is mentioned. ...
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FFmpeg can't decode H264 stream/frame data
Recently I had chance to work with two devices that are streaming the H264 through RTSP.
And I've ran into some problem trying to decompress this stream using FFmpeg library.
Every time the "...
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2
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H.264 over RTP - Identify SPS and PPS Frames
I have a raw H.264 Stream from an IP Camera packed in RTP frames. I want to get raw H.264 data into a file so I can convert it with ffmpeg.
So when I want to write the data into my raw H.264 file I ...
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Converting mkv to h264 FFmpeg
EDIT:
This question has become very popular and is one of the top results for searching "convert mkv to h264 ffmpeg" and thus I feel it is appropriate to add that for anyone stumbling upon ...
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H.264 encoded MP4 presented in HTML5 plays on Safari but not iOS devices
I'm using Adobe Media Encoder CS5 to encode a FLV file to H.264 to present on the web via HTML5 and the video file plays just fine in Safari in OS X (and in Firefox encoded to OGG) but on any iOS ...
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1
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Stream H.264 video over rtp using gstreamer
I am newbie with gstreamer and I am trying to be used with it. My first target is to create a simple rtp stream of h264 video between two devices. I am using these two pipelines:
Sender: gst-launch-1....
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