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Questions tagged [libx265]

C/C++ library that encode video streams into H.265/HEVC format

It provides an C++ implementation for Linux, Windows and OSX to encode video streams in format.

libx265 official site is videolan and the source is available from the repository http://hg.videolan.org/x265.

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Could not write header for output file #0 (incorrect codec parameters ?): No such file or directory

Im trying to trans code a mp4 file using the following command using a ffmpeg static build ./ffmpeg -i /tmp/tools/file_example.mp4 -map 0 -map 0 -map 0 -map 0 -c:v libx265 -f dash \ -b:v:0 25M -b:v:1 15M -b:v:2 6M -b:v:3 1M -maxrate 25M -bufsize…
playmaker420
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Why does H265 decoder has to wait for tens of frames of data before start decoding?

I'm trying to build a real-time video streaming application in C++ based on H265 codec. My application cares the real-time performance very much, and I have built a single thread program to test the H265 codecs. The program has a simply…
Caili
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Win/ffmpeg - How to generate a video from images under ffmpeg?

I know this is with great possibility a duplicate of same questions, but I dont get it working. So how can I under windows generate a mp4 video with h265 codec and 30fps of a bunch of images. What I have done so far is to try this answers from this…
JohnDoeAnon
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Compile ffmpeg with x265 and fdk-aac on Minibian - dependencies not found

I am trying to get a live streaming device to work on a raspberry pi. I am running minibian. I roughly follow this guide without the cross compiling. My problem is probably with the compilation of ffmpeg. I downloaded and compiled both x265 and…
mneumann
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How to compile OpenCV in HEVC with Cmake?

I am modifying HEVC opensource project downloaded from bitbucket. I have added OpenCV libraries now for some frame processing. Code works fine with visual studio. Problem is when I try to make it with cmake following error is…
Jibran.
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HEVC decoding using FFmpeg with error concealment

I am doing a project where I have to implement slice loss in HEVC encoded bitstream and see the output video after decoding. I am seeing a strange green patch in decoded video(using ffmpeg/UHDcode) in place of lost slices. Is it some sort of…
Andy
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Where is the x265 plugin for Intel Media SDK?

Envrionment: Windows 10. Intel Media SDK 2016.0.2 I have been using the Media SDK for decoding H.264 video. It works great. Now, I need to decode H.265 video. This seems to be just one line change in the source code. However, when run, I get the…
Peter
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How to decode using libx264 package?

Environment: Ubuntu 16.04, package libx264-148 I am looking at decoding some x264-encoded data using libx264 library. I found a sample at https://code.videolan.org/solaris/x264/raw/7d35ba6bf080610d8f144f4270e961c69ba14f1c/x264.c. It is using APIs…
Peter
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Decode a h265/HVEC bitstream to rawvideo(Y4M)

I encoded a raw video in Y4M format with the following command on Matlab system(['ffmpeg -i ' videoNameIn, videoTypeIn, ' -s ' num2str(width),'x',num2str(height), ' -r ', num2str(frameRate), ' -c:v libx265 -preset ultrafast', videoNameOut,…
asendjasni
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How to enable delta qp flag while encoding with HEVC?

I am encoding a video file with HEVC (open source X.265 downloaded from bitbucket). I am using this CLI argument: --qp 38 -b 0 -p ultrafast --psnr --input-res 1280x720 --fps 24 --frames 120 --merange 32 --no-lft --subme 0 --input Input.yuv…
Muhammad Abu Bakr
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What is YUVrecon video produced by HEVC encoder?

What is YUVrecon video file produced by HEVC encoder along with .HEVC file at the end? Someone told me: HEVC file is produced by HEVC encoder. HEVC decoder is also working and YUV recon is decoded result of .HEVC file. And another friend told…
Muhammad Abu Bakr
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Which H.265 encoder supports main444-16-stillpicture?

Does anyone know an encoder which supports the "main444-16-stillpicture" profile (for 16 bits bit-depth images) ? I know that VideoLAN's x265 encoder does not support it! Thanks for your answer!
user6684929
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Reading file and inputting it as inputting it as integer array

I am working on HEVC i.e. X265 and over here I am trying input the QP array with the values I read from file.I know that values of qp array would be from 0 to 100. I have created a testing file and input a combination of 1's and 0's till 99. The…
Ahmed Rik
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Strange forward declaration error reported by llvm-gcc-4.2

When I use llvm-gcc-4.2 within Xcode4.6.3 to compile 'x265' sources, it reported a strange error: ./source/encoder/reference.h:38:error: forward declaration of 'class x265::MotionReference'.However, the class declaration of x265::MotionReference is…
XiangmeiNorth
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Why is x264 / x265 lossless encoding slower than lossy encoding

I am comparing x264 and x265 encoders, with lossless and medium presets. I am so surprised to see below performance results. | Format | Size (KB) | fps | |********************|*************|******| | YUV 420 | 9,182,363 |…
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