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Questions tagged [h.265]

x265 (HEVC/H.265) is a library for encoding video into the High Efficiency Video Coding video compression format that was developed and standardized by the ISO/IEC MPEG and ITU-T VCEG.

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Why both videos are of same file size?

I am using ProMovie Recorder to record high quality videos using iPhone X, and I noticed a weird thing today. Here's what I did: I recorded a 4K 60fps video for 6 seconds (HEVC encoding). I recorded ...
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TV is not able to seek properly in a recorded HEVC MKV file

I have a HEVC/MKV file recorded from DVB. It plays without problems on a TV, but the TV fails miserably when I attempt to seek in the file. Regardless if I seek forward or backward, it always seeks ...
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286 views

Does HDR content has anything to do with codec?

I am new to video codec(encoding/decoding) stuffs. I am trying to understand deference between H.264(AVC) and H.265(HEVC) HDR video contents. I thought HDR video 'means' it has 10 bit color depth and ...
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H.265(libx265) codec for 8K videos, using same compress settings, why yuv444 10-bit is saving bitrates than yuv420 8-bit?

Our workflow involves huge 8K clips(i.e., 8192x8192). The inputs are mostly very high bitrates 264/265 clips, though we are using ProRes or DNxHD for post-production within the process, we do not ...
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H.265 disadvantages with video dimensions not multiple of 8

Are there any disadvantages (like worse image quality/more compression artefacts) when encoding a video in H.265 with dimensions that are not a multiple of 16 or 8, but instead a multiple of 4 or 2? ...
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How to render png's as h.265 12 bit video?

ffmpeg -framerate 500/21 -i %d.png -i audio.wav -c:v libx264 -crf 0 -pix_fmt yuv422p10le -c copy output.mkv I have the above command for converting a png sequence of images into 10 bit h.264 video ...
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46 views

Frame-by-frame h.265 transcoding

I'm capturing 240 FPS footage from the Go Pro Hero 6 Black in a lab setting, and I need to be able to review the footage frame by frame. Right now, I'm attempting to transcode the h.265 video output (...
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Blu-ray transcode to H.265 using Intel Quick Sync Video

Blu-ray transcode to H.265 using Intel Quick Sync Video I just started a process of transcoding about 100 video discs (with DTS-HD Master Audio on passthrough) from my collection of Blu-rays and want ...
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1answer
514 views

How do I convert H.264 Rec709 (“SRGB”) to H.265 HEVC 10-Bit Rec2020 (“Wide Gamut”)?

I'm looking to convert a standard colour gamut video to a wide gamut video. For example, I have a 1080p, 2K or 4K H.264 8-bit mp4. This is normally (eg. from YouTube) in Rec709 or "SRGB" colour space. ...
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2k views

Using a 265 encoded video with a container

Let me start by saying I'm not a video production guy. I am a programmer so I'm in over my head in certain areas. I've been trying to use ffmpeg to mess around with HEVC encoded video. I was told it ...
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What are supported stream formats for h.265

I wanted to know what are the possible streaming formats for streaming a video using H.265. Does H.265 support rtsp and rtmp based streaming? Currently, I am using ffmpeg to live stream the camera ...
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How to encode with x265 cli

I have some raw H.264 10bit videos need to convert to HEVC format, but the encoder only takes some frames (600/170000) to encode, and the video is full of noise. What is the correct way to encode ...
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844 views

Transcoding 100+ files from H.264 to H.265

I am in a process of transcoding 100+ High Quality Bitrate 720p MKVs containing H.264 (x264) to H.265 (x265 / HEVC). I do this with HandBrake software under Linux Debian 9 on Intel Xeon E3-1225 v3 3....
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NVENC_HEVC Encoding making my files larger

I got a new Nvidia GPU to speed up my video encoding. I am working with x264 files to x265 and wanted to go faster. Using the library libx265 I am getting about 85fps when working on a file that is ...
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638 views

Next-gen containers and codecs (BPG, HEIF, etc.) [closed]

It has bugged me for a long time, why no successors have come to replace JPEG and anim GIF or PNG per say. I am completely a media format newbie, just started digging into the topic. Roughly a year ...
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Differences of h.264 and h.265?

What are the main differences between h.264 and h.265?
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CRF for 'visually lossless' for libx265 [duplicate]

The ffmpeg wiki page for H.264 states that: Consider 18 (CRF) to be visually lossless or nearly so: it should look the same or nearly the same as the input but it isn't technically lossless. ...
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865 views

x265: Is it possible to re-compress HEVC video without quality loss?

My situation: Transcoding 1080p bluray videos to HEVC. Audio untouched; My rig is old (pre-2012) and to speed up the process I'm using --preset ultrafast; From x265 documentation, I understand that ...
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3k views

h264 and h265 keyint params settings

Fiddling with the h264 and h265 params I found both keyint and min-keyint settings. Setting keyint shouldn't force the codec library to use exactly that frame interval? Do min-keyint have something ...
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1answer
6k views

ffmpeg encode in all-i mode h264 and h265 streams

Which params I can use to obtain a transcode all-i based? No B and P frames? I know that this is not efficient for compression purposes but this is not my case now. I guess i have to fiddle a bit ...
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What CRF or settings I should choose for h265 in order to achieve a similiar quality of h264?

I'm doing some experiments with HEVC x265. I have a raw footage and the quality of details of h264 with same CRF setting looks better than h265. Shouldn't be the opposite? Maybe my setup isn't the ...
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What needs to happen before we expect x265 to be in wide use, along with encoders something like Handbrake available for it?

I know that the project is already out and work has began on it. However, realistically speaking, a large number of things have to happen before it is ready for prime time. (For example, given the ...