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Questions tagged [h265]

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.mkv file not playing in HEVC/H.265 supported player

I wanted to play UHD (4k) videos in my new LeTV (Super3 X55). So I used youtube-dl to download 4k YouTube videos (which are humongous btw) but for some reason most of them do not play. The TV's ...
Macindows's user avatar
  • 225
4 votes
1 answer
304 views

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? ...
YourMJK's user avatar
  • 143
3 votes
1 answer
4k views

How to preserve colorspace in ffmpeg

I have a x264 video with yuvj420p(pc, smpte170m) color space and i want to convert this video to x265 and reduce its file size. I have used this command ffmpeg -i input.mp4 -vcodec libx265 -crf 20 ...
mustafa candan's user avatar
3 votes
1 answer
5k views

Nginx RTMP didn't accept HEVC h265 input format

I'm trying to created live event broadcast on my VPS server , to make the audience able watch my broadcast I use Nginx RTMP that's produce link at this format http://192.168.1.5:8080/hls/live.m3u8 ...
Salem F's user avatar
  • 131
2 votes
1 answer
4k views

ffmpeg/x265: fixed-GOP, IDR only keyframes, repeating headers

I need to transcode a video to another one with the following properties: GOP size is always fixed at a given value Only IDR frames are used as key-frames (not I-slices) SPS/PPS/VPS frames are ...
Elektito's user avatar
  • 123
2 votes
2 answers
14k views

Handbrake x265 Optimal settings for ripping DVD

I want to rip DVDs(MPEG2) to MKV using Handbrake for viewing on PC, and currently i am not sure about the settings of the x265 encoder. Can anyone suggest the optimal settings for: CRF : 19 ? 23 ? 25 ...
Sidias-Korrado's user avatar
2 votes
0 answers
1k views

Why has grayscale a higher bitrate than YUV with H.265/HEVC?

For compression purposes, I am re‐encoding a grayscale video to the H.265/HEVC codec. Although the input video is more or less perfectly grayscale in aspect, it is provided in the yuv420p pixel format....
Maëlan's user avatar
  • 121
1 vote
1 answer
4k views

Re-encode with ffmpeg using libx265 - rawvideo

I have a script that is going through a media library and re-encoding files to HEVC with ffmpeg and using libx265. The default command I use is: ffmpeg -i "$origFile" -map 0 -c copy -c:v libx265 -...
J M's user avatar
  • 113
1 vote
1 answer
3k views

How to extract frames and saving frame type to filenames with ffmpeg?

I have a research project where I need to apply very, very computationally heavy image filters on a h264 video. Due some restrictions outside my control I have to use proprietary filter that works ...
jimmy's user avatar
  • 113
1 vote
1 answer
101 views

ffmpeg, audio tracks, and QuickTime player

I tried to copy all streams (video, audio, subtitle) and add a tag with the following command in order to play the files using QuickTime player: ffmpeg -i in.mp4 -vcodec copy -tag:v hvc1 -acodec copy -...
janeden's user avatar
  • 121
1 vote
1 answer
321 views

HEVC vs H264 video file size

I am doing some experiments on the file size of recorded videos in HEVC vs the ones recorded in H264 using a simple Android app that I developed. My impression was that videos recorded in HEVC should ...
angel_30's user avatar
  • 353
1 vote
1 answer
6k views

Adobe Premiere Pro no H265 export option?

I am using the trial version of Adobe Premier Pro (also tried Elements) and I noticed that there is no option to export as H265. Is there something i should do in order to enable this functionality? ...
ImJustACowLol's user avatar
1 vote
2 answers
3k views

Recompressing 1080p h264 collection to HEVC - Target Bitrate For Minimal Loss

My understanding is that HEVC (aka h265) can provide roughly the same video quality as h264 in roughly half the space, for 1080p+ footage. I have a large collection that I would like to re-encode to ...
J23's user avatar
  • 111
1 vote
1 answer
1k views

libx265 NUMA pool configuration misleading

I have the following scenario: Using libx265 and a dual-socket system (thus 2 NUMA nodes) I want to encode videos using ffmpeg and libx265. libx265 can be configured to use thread-pools which are ...
user654123's user avatar
1 vote
0 answers
416 views

VLC doesn't play mp4v video converted with VLC to h264/h265

VLC reports the original video as: Codec: MPEG-4 Video (mp4v) Video resolution: 8192x8192 Frame rate: 7.549296 I am using the Convert / Save option to convert the video using the following profile: ...
Greg's user avatar
  • 121
0 votes
1 answer
511 views

Is there any way to efficently compress multiangle recordings?

I have a DVD (a concert recording) which uses the multi angle feature for 3 different angles. I just encoded it with Handbrake on 3 separate but identical machines (all of the same model and maker, ...
LiveWireBT's user avatar
0 votes
2 answers
1k views

How h265 settings / presets affects the target device cpu while decoding and how can I tweak them?

h265 is a very powerful but still not widely supported codec, recently I found myself in the need of prepare some h265 videos and have them played on various smartphones. While a powerful desktop pc ...
user3450548's user avatar
  • 1,720
0 votes
2 answers
2k views

Does HEVC Support 16-Bit RGB Color Format?

I have some 3D Rendered Frames in 16-bit rgba Color Format.... I don't Wanna Lose Any Data... Because I have to Use those in editing.... But With Thousands of Frames in 4K File Size Matters.... So Why ...
user avatar
0 votes
1 answer
1k views

Android - Media Encoder HEVC Plays, FFMPEG HEVC Won't

The Problem I've been fighting with this for days. I'm writing a video application for Android to be used on an Odroid C2. I've been simultaneously developing some scripts that utilize ffmpeg to ...
Euroclydon37's user avatar
0 votes
0 answers
41 views

Difference between crf and cq settings in ffmpeg

What is the difference between -crf and -cq parameters of ffmpeg? I am trying to compress 1080p h264 videos into 1080p h265 videos with high quality and low size. I have noticed that in some guides ...
jamana's user avatar
  • 1
0 votes
1 answer
117 views

Creating an 8K/4K video in ffmpeg from single image frame leads to video longer than audio

I want to make a video using a cover image and an audio file with the audio file as the length. What's the most optimal modern way to do this with new codecs and high resolutions? Reason why I want 4K/...
MyPreciousss's user avatar
0 votes
0 answers
36 views

Help me with corrupt video mp42

Hello I have one corrupted video file created with Chinese Camera DV4K_V23. I created one small sample video from this camera and I uploaded it for someone to help me, to decipher exactly which ...
Dejan's user avatar
  • 1
0 votes
0 answers
84 views

Better compression for h265 transparent mov video

I created a 3d animation that I converted from an image sequence (211 pngs @ 30fps) using this command: ffmpeg -framerate 30 -pattern_type glob -i '*.png' -vf "scale=460:-1" -c:v libvpx-vp9 -...
flks's user avatar
  • 163
0 votes
0 answers
66 views

Why, in FFmpeg with libx265 the timestamp tbn parameter is always 1k even when it seems not logical?

I encode with ffmpeg and noticed that when I encode a y4m video in 29,97 FPS into a h265 video with libx265, the parameter of the two videos are the following : original y4m : 29.97 fps, tbc : 29.97 ...
Nils Beaussé's user avatar
0 votes
0 answers
2k views

Help decoding video from hardware encoder

I obtained this video from directly reading the memory of a hardware encoder. The encoder supposedly produces a HEVC (H.265) or H.264 video stream, but I can't accurately play or convert the file with ...
Telmo Marques's user avatar
0 votes
0 answers
2k views

Replacing I-frames in h265 stream

I'm trying to follow this tutorial: https://www.reddit.com/r/brokenanimegifs/wiki/tutorial Everything works perfectly. On the basis of this tutorial, I even created my own little tool. It just ...
bukkojot's user avatar
  • 675