HEVC | HEVC reference encoder and decoder | Messaging library

i'm using libde265(www.libde265.org) to decode my hevc file in c++ project and try to save the decoded YUV as pictures. But i hava a problem to find the address of the Y,U,V values in c++ project. Does anybody know, which format of YUV we get, when we use libde265 decode a hevc file? YUV420, YUV420P, YUV420SP, etc.?

Thanks a lot! Ivan

I am converting some old mjpeg videos (stored in .avi container) to h.265 (.mp4 container) but am noticing the colors are smearing. Using the terminal command:

ffmpeg -y -i "input-file.avi" -c:v libx265 -vtag hvc1 "output-file.mp4"

I get the following image (notice how the red and blue are stretched donward). There is a lot of motion in the scene, but the motion is mostly horizontal:

Any idea what might cause this? The detail and resolution seem fine, just the colors are being interpreted weirdly.

Full output:

In my project, i'd like to save one of the frames from Hevc file. I'm using FFmpeg in source code to decode the Hevc file and get AVFrame and AVCodecContext. What i need is to save the frame as picture(with full colors).

I have tried to save it as *.pgm file, so the picture is just grey, which not really i need.

Any suggesstion? Thanks!

I'm using avcodec to decode some hevc clip on linux, the avcodec lib is built from source package ffmpeg-4.3.1 with command:

I've gone through all the previous answers on this question , but my error and approach is slightly different from the previous questions'.

I've only three views in my app : Login , Signup and Main. I want to show an interstitial ad every time I transition from one view to another.

In order to accomplish this, I'm initializing , loading and showing the ad at the start of each view:

MainActivity.java

I'm wondering how to actually use ffmpeg to create a 2xVR180 video file from 2 different VR180 videos. That's to say, on the front side, a stereoscopic 3D video, and on the back side, another stereoscopic 3D video.

Videos are taken with an Insta360 EVO in 3D mode, so I can either deal with 4 video files (2 INSV files for the left eye and other 2 INSV files for the right eye), o directly with the 2 stitched HEVC/MP4 files.

I know the result won't be a 360 3D stereoscopic video, that's why I'm talking about "2xVR180".

Thank you for your help

I have an HEVC encoded bitstream (.bin and equivalent .mp4 file). I want to remove some frames from the bitstream to see how a decoder (or media player) behaves when a particular frame is lost.

enter image description here

How I can remove a frame (or a NAL unit) from the bitstream? What tools can be used?

Thanks

I have several HEVEC files that I'd like to merge. With small files (about 1.5 GB) the following code works fine

I tried to encode a series of png files into a HEVC codec video with ffmpeg (version modern enough) in these parameters:

ffmpeg -hwaccel cuda -r 60000/1001 -f image2 -i output%05d.png -c:v hevc_nvenc -preset slow -profile:v main10 -level 6.2 -pix_fmt yuv444p16le output.mkv

Then I got a mkv video file and I found that it cannot be decoded with DXV2 but with LAV Decoder, which takes up really lot of my CPU. However, I also found that the other HEVC codec video file, which has similar property of my video, can be decoded with DXV2 Decoder using my GPU. Could anyone help me find a way that, make a HEVC codec video can be decoded using GPU? Thanks a lot.