Questions tagged [h.265]

H.265 (also known as HEVC) is the successor to the popular H.264 video codec, which is supposed to improve its performance by 50% and more

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Convert HEVC mkv to mp4 without transcoding

I'm trying to remux h265 MKV to MP4 without transcoding. My demo video is tears-of-steel. I'm using the following command but I cannot play the resulting file ffmpeg -i tos-1720x720-cfg01.mkv -tag:v ...
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23 views

ffmpeg: How to keep vfr unchanged during reencode

I have a file with variable frame rate that I would like to reencode. My attempts so far always lead to the frame rate being changed from 23.98 to 24. I have tried "-vsync vfr" and "-...
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41 views

Do CPU and GPU work *together* for rendering HEVC?

I have a home theater PC that I built 7 years ago. The CPU is fairly low-end (Intel i3-4360). It only has 2GB system RAM. I recently tried for the first time to play fairly high bitrate (20Mbps) 4k ...
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40 views

ffmpeg mediocre conversion quality from DVD

I am trying to convert a DVD that I own into mp4/lib265 format. To test the quality out I am only converting the first two minutes of the input video (which is a concatenated vob file). The source ...
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411 views

Sudden HEVC / H265 failure with Windows 10

My 2016 production Windows 10 Pro (Version 20H2) computer suddenly stopped playing HEVC videos properly. I need this feature in my computer because of my work and entertainment purposes (other that it ...
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121 views

Are HEVC and H265 same? in ffmpeg they give different results why?

recently i re encoded a H264 video to HEVC using ffmpeg and intel hevc_qsv hardware acceleration and libx265. hevc_qsv results in higher sized video and libx265 results in 50% lower sized video. i ...
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1answer
125 views

How to add AUDs to HEVC using FFMPEG

I have a HEVC 4k mkv missing AUD units and want to use ffmpeg to add them in (without re-encoding). I came up with: ffmpeg -i Movie.mkv -c:v libx265 -c copy -map v -x265-params aud=1 Movie.ts
 But ...
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457 views

ffmpeg hevc_vaapi: Impossible to convert between the formats supported by the filter 'Parsed_null_0' and the filter 'auto_scaler_0'

on Linux i am trying to encode file to H€VC using hardware acceleration. Successful attempt is: ffmpeg -v verbose -hwaccel vaapi -vaapi_device /dev/dri/renderD128 -i '/path/file.mkv' -vcodec libx265 -...
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44 views

Is it possible to encode a video with a solid color background using h.265 so that the background color remains stable?

I'm trying to incorporate a video into a web page, where the video has a solid color background that matches the background color of the page, as well as a small animated character moving around ...
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78 views

ffmpeg creates large compressed files for tiny videos?

When compressing very small videos, there seems to be a large overhead in the video container itself. Here are some examples using a single-frame 16x16-pixel all-black image: ffmpeg -f lavfi -i color=...
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612 views

Set keyframe interval in ffmpeg when using nvenc

OBS uses nvenc when encoding live streams. In the guide "NVIDIA NVENC OBS Guide", an advanced option is listed as: Keyframe Interval: Set to 2. Streaming platforms may limit what you can ...
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2k views

Understanding pixel format and profile when encoding 10-bit video in ffmpeg with nvenc

I am trying to encode a 10-bit H.265 video from a 8-bit H.264 source using ffmpeg with CUDA hardware acceleration. Without hardware acceleration, a typical command would be ffmpeg -i input.mkv -...
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234 views

Maximum possible bitrate for HEVC videos with hardware encoding in Premiere Pro

I am trying to export a series of images as a 4K HEVC video (it is a long series) and I am using Premier Pro 2020 to do it. I found I can switch to High tier and this allows me to go over 25Mbit ...
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Playing a HEVC video on a 4700MQ machine vs on a Cherry Trail machine

Here is something I'm scratching my head over. My main computer is a 17" laptop Lenovo Z710 (c 2014) with a i7 4700MQ, 4 core 2.4GHz, Haswell, with onboard Intel HD 4600 graphics, plus NVIDIA ...
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HEVC x265 playback in Edge displays frames out of order

If I download the Tears Of Steel x265 sample from this page: https://x265.com/hevc-video-files/ and then drag it into Edge 87 to have it play. The video jumps around as if prior frames are being shown ...
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366 views

How is FFmpeg's H.265 encoding so much more efficient than Adobe's?

I have a thirty seconds 1080p video file that was rendered from Premiere Pro/Media Encoder (target Bitrate 10) and is encoded in H.265. It has 36.6 MB. When i run the command ffmpeg -i input -c:v ...
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h265 hardware acceleration with CFR 0 vs Lossless

I want to export a png image sequence to lossless h265 using hardware acceleration, is there any difference between the two strings below? Should I use hevc_nvenc or libx265 codecs? ffmpeg -r 60 -f ...
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2k views

hardware acceleration FFMPEG on Windows

I've installed the latest gyan.dev full build on Windows 10, I want to convert a sequence of png to an h265 .mp4 movie and I'm successfully using this command ffmpeg -r 60 -f image2 -s 3840x2160 -i ...
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293 views

remove encoding information

I want to know how I can remove encode settings from the mediainfo with mkvpropedit or ffmpeg? İn this post: https://video.stackexchange.com/questions/18227/removing-mp4-encoding-information I found ...
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492 views

ffmpeg hevc encoding error: The cu_qp_delta -33 is outside the valid range [-32, 31]

I am trying to re-encode a 4K HDR Movie remuxed from Bluray to save some space. Using the following command: #ffmpeg -analyzeduration 2e9 -probesize 2e9 -max_interleave_delta 0 -y -i "movie_t01....
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832 views

Transcoding 1080p h264 to h265 w/ FFmpeg - Unexpectedly Extreme Reduction In Size

I have a collection of h264 videos from a digital camera that I'm re-encoding to h265 (HEVC). The FFmpeg options I'm using are: -c:v libx265 -preset medium -x265-params crf=20:keyint=30 -c:a copy -...
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2k views

Huge file size difference between lossless HEVC and FFV1

I made a music video with a still image (input.jpg ≈ 1 MB) and a music (input.wav ≈ 20 MB) using FFmpeg. Why do I get such a huge difference in file size between the video generated with the lossless ...
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992 views

How to improve lossy compression of NVENC HEVC with FFmpeg?

There are a lot of answers about h264_nvenc settings. But I didn't find code examples for tuning NVENC HEVC lossy encoding settings on latest GPU, for example on Tesla T4. These are my current ...
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2k views

What is the difference between NVENC HEVC lossless and losslesshp presets?

There are two NVENC HEVC lossless presets: ffmpeg -hide_banner -h encoder=hevc_nvenc -preset <int> E..V.... Set the encoding preset (from 0 to 11) (default medium) ...
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1answer
5k views

hevc_nvenc option information

I tried to encode to hevc_nvenc but the documentation on FFmpeg is too less and all options are not clearly defined. So if anyone can be good enough what all options do and what settings and filters ...
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4k views

ffmpeg: Could not find codec parameters for stream 0 - Video: none (H265 / 0x35363248)

I am trying to find a way to concatenate videos I am getting from an NVR. To my understanding, the video is encoded with H265, but I am not able to find more information on the specific codec (...
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1answer
186 views

How can I create h.265 videos that are fully backward-single-steppable in mpv in FFmpeg?

I'm planning to convert my video collection from h.264 to h.265 in order to save disk space. Source files are in mp4 and mkv containers. The videos are mostly watched using mpv. Especially for the ...
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168 views

how to split a bitstream with ffmpeg

I am trying to split with ffmpeg a bitstream whose extension is .hevc which is generated by the platform HM 16.11 in several segments according to the GOP I want to have several files whose extension ...
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2k views

What are the values iside hevc_nvenc presets?

I'm trying to setup hevc_nvenc encoder in ffmpeg to get best result for further postponing. Unfortunately documentation I've found is very terrible. I want to find out what are the values under the ...
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155 views

FFMPEG - Encoding video changes sounds and subtitles tracks names, and make them invisible for SmartTV / Chromecast

First of all, I'm not sure this is the right place for such question. Please let me know if I'm wrong. INTRODUCTION: I'm regularly recording movies on french channels, via a functionality of my NAS. ...
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1answer
5k views

Most efficient way to re encode H.264 10-Bit to High profile or HEVC 10-Bit

For an odd reason my OLED TV can play HEVC 10-Bit files but only H.264 non-10-Bit. This output (video stream) from ffmpeg is played fine with HEVC 10-Bit: Stream #0:0: Video: hevc (Main 10), ...
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292 views

ffmpeg does not produce smooth videos from mkv h265

It's kind of subjective, but I'm not able to produce 100% smooth videos with ffmpeg. As input I use https://www.libde265.org/hevc-bitstreams/tos-1720x720-cfg01.mkv as a example.This is a h264 mkv ...
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569 views

HEVC 10 bit streaming to full HD TV

I have a low power desktop (ASRock Mod 1150 H97M with integrated graphics, Intel Pentium G3258 CPU, 1920*1200 monitor, Windows 10) which acts as a media server in my home. My TV is Sony/Android TV/ 55 ...
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98 views

Decode/encode 4:2:2 with a 4:2:0 decoder/encoder

Similar to Reinterpret AVC bitstream as HEVC. Some hardware codecs support 4:2:0 for 4k but not don't support 4:2:2 even for SD, with far less data. Can you trick a codec to encode 1920x1080 4:2:2 ...
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78 views

Reinterpret AVC bitstream as HEVC

I understand HEVC to be a superset of AVC. HEVC allows more 'tools' to extract more compression out of a video sequence. Is there a tool that converts an AVC stream to HEVC, completely ignoring the ...
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18k views

Windows 10 getting HEVC H.265 Codec to use Hardware Acceleration

Playing HEVC H.265 videos using Windows Media Player and GoPro Quik then the 4k 60 fps video appears all stuttering and becomes a slideshow. The CPU usage is going through the roof and it's not using ...
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5k views

Generate hls stream using h265 codec

I am trying to convert h264 video to an hls stream which uses h265 codec. As this bitmovin article suggests, we need to use fragmented mp4 for the hls/h265 stream to work on safari. I am able to ...
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18k views

Best settings for converting from h264 to hevc?

I'm trying to convert some of my library to HEVC to save space. The idea being I re-encode the existing media and save 20-50% file size. What would be some recommended settings for converting and ...
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1k views

Set an excat GoP-length open and no-open in ffmpeg

ffmpeg -f rawvideo -vcodec rawvideo -s 1280x720 -r 50 -pix_fmt uyvy422 -i Test.yuv -c:v libx265 -x265-params keyint:150:open-gop -b:v 10M Test_open_150_10M.hevc As you can see, I'm trying to ...
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82 views

FFmpeg losslessly deconstruct video then losslessly re-encode

I need to dump all the frames losslessly from a h.265 mkv video, along with the audio track in FLAC 24bit (initially it was encoded from the source in FLAC 24bit). I then need to edit some frames and ...
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10k views

Is it possible to get FFmpeg to use hardware acceleration for HEVC transcoding on macOS?

I have a MacBook Pro with a Kaby Lake processor running macOS High Sierra (10.12). Is it possibe somehow to setup FFmpeg to utilize hardware encoding of HEVC with toolbox, instead of libx265?
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9k views

Re-encode 4K video to H.265/HEVC with FFmpeg for playback in QuickTime

I have a one hour 4K video which was weighing in at 10 GB. I thought I'd try re-encoding to HEVC using FFmpeg to try to save space, something I hadn't tried before. However, I switched the container ...
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529 views

ffmpeg to convert *.mkv to mp4 using h.265

i was wondering, i have various misc video files in mp4 and mkv with various codecs and i wanted to convert all to mp4 with h.265 with aac as the codecs so i was wondering can FFMpeg handle that? I ...
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3k views

How to play h265 video in Windows Server 2012 R2 DataCenter OS?

I am unable to play an H265 Video on Windows Server 2012 Datacenter OS. The main reason - Win2012 Server does not know about the h265 video codecs. So decoder unavailable, due to this, it can't ...
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563 views

HEVC/H.265 GPU HW decoding and output to different card

I use a Kaby Lake CPU (i7-7700) to enable HEVC hardware decoding. Besides the embedded GPU I also have a NVIDIA GTX 970. My display is hooked up to the NVIDIA card. I'm trying to play the samples from ...
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1k views

Application streaming with H.264/H.265 in realtime to browser clients

I am trying to build a solution which streams the visual content of a windows application (built with Unity 2017) to browser clients. Those applications provide high quality content which needs to be ...
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10k views

Convert YouTube HDR (vp9.2) video to HEVC HDR with ffmpeg

My question is simple: how do I convert HDR vp9.2 videos downloaded from YouTube into HEVC (better if 10 bits) HDR videos? Yesterday I tried this command, which is the only one I could find in Google:...
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57k views

How can I view .HEIC photos on Linux?

How can I view .HEIC photos (the new default format on iOS 11) on a Linux desktop, without uploading them to some cloud service? Is there an image viewer, image converter, or browser with support for ...
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3k views

Can I mux H.265 into FLV by force?

We want to try H.265 encoded video stream, but the video cloud server vendor we are using only provides RTMP+FLV uploading port. I have made some search works, and it seems FLV do not officially ...
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7k views

Which Xeon processors have hardware support for H.265 encoding/decoding?

Looking to build a rendering machine for H.265 video: would I be better off with a Core i7/i9 because of built-in hardware accelerated H.265 encoding/decoding, or can Xeon processors support it as ...