Questions tagged [hevc]
The hevc tag has no usage guidance.
31 questions
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hev1 vs hvc1 - which is better?
I have several MP4 videos that is a mix of hev1 and hvc1 codecs. Some of the playback devices are iPhones.
Is it better to tag them as hev1 or hvc1?
- 11
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15
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HEVC video_delay is larger in decoder than demuxer error message
I would like transcode a file with HEVC to a live stream with AVC. The HEVC demuxer reports many errors:
[hevc @ 0x25a3140] video_delay is larger in decoder than demuxer
If you want to help, upload ...
- 115
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4
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Possible to extract scaled versions from Scalable Video Coding video?
Video can be encoded using Scalable Video Coding (SVC) with either temporal or spatial scalability. Assuming a video is available with SVC, is it possible to extract the different "versions" ...
- 101
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67
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How to encode HEVC with alpha without a Mac?
I am trying to produce a file that Safari on Apple devices will play with alpha support. I don't actually have any Apple devices, though, and all of the instructions I've found for doing this suggest ...
- 101
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35
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HEIC/HEIF to PNG using NVIDIA hevc_cuvid
OS: Ubuntu
I want to convert heic/heif to png using GPU(not software decoding), mostly to avoid patent issues. While hevc_cuvid + ffmpeg works for h265 video. Since heic/heif are on the same platform ...
- 101
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41
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Does HEVC/H.265 "slower" preset introduce artefacts?
I have been experimenting with HEVC/H.265 compression parameters to find a sweet spot balance between file size and quality for a 1080p/H.264 recording of a festival with lots of details and flashing/...
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1
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1
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103
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Impact of reencoding an HEVC file: How much loss if I do it in two steps, vs. going directly to a lower bitrate?
My scenario is as follows:
Working with large original 8K file, captured at 100Mb/sec with hvec (h265) codec
The file was reencoded at 50Mb/sec for a reasonable balance between size and quality
Now ...
- 63
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144
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Inverse Telecine (IVTC) anime DVDs
Issue
I have a bunch of anime I've ripped from DVDs and even BDs that are 480i.
I want to upscale these videos with Topaz Video AI for higher quality on a big screen, but also because subtitles are a ...
- 101
0
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1
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276
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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/...
- 113
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141
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Why does this HEVC HLS stream not play on browsers?
I have a HEVC HLS stream that does not play when I paste it e.g. in Safari. The video is encoded in HEVC and has a resolution of 4608x1728. The screen just stays black.
The URL is: https://cdn2.taggy....
2
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3k
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What does the tag "-tag:v hvc1" means?
I am using FFMpeg to compress a video to X265/HEVC. When I am doing it normally the converted video doesn't working on iPhone or iPad. But while I am using the tag - "-tag:v hvc1" in the ...
- 135
1
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128
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ffmpeg QP: AMD Radeon (Vega7) hevc_vaapi results in lager files than hevc_nvenc - why?
I've switched from an RTX 3070 to an AMD Radeon Vega7 APU (4600G/5600G). I'm trying to tweak the ffmpeg parameters, so that the transcode output results in a similar quality AND file size. hevc_vaapi ...
- 11
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1
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231
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h264/hevc: non-integer frame rates
I'm having a hard time understanding how non-integer frame rates are implemented in h264 and hevc. For example, I just stepped through a 23.976fps video frame by frame using Shotcut, and looking at ...
- 103
1
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1
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340
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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 ...
- 353
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0
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1k
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Copy timecode from SEI Picture Timing to MXF Timecode Stream with FFmpeg
I am receiving an HEVC encoded live stream that contains SMPTE 12-1 timecode in the SEI picture timing, as it is recommended in ITU-T Rec-H.265-202108 Annex D.3.3 Picture timing SEI message semantics....
- 121
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862
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Decode Multi-Layer HEVC
I'm trying to decode an HEVC/H.265+ rtsp stream to an image using ffmpeg as follows:
ffmpeg -rtsp_transport tcp -stimeout 10000000 -i 'rtsp://user:passwd@url:port/Streaming/tracks/101?starttime=...
- 111
1
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1
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6k
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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? ...
- 121
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1
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679
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ffmpeg produces the same output file with different bitrate settings
My input is an uncompressed video captured from old Hi8 cassettes, mediainfo:
Format : RGB
Codec ID : V_UNCOMPRESSED
Codec ID/Info ...
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1
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0
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74
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Does exporting to lossless HEVC prevent loss when re-exporting an already exported video file?
Software: After Effects, Premiere Pro
So I had a little bit of trouble with my main PC and can't get it fixed before the deadline of my client. I already had the final video ready and exported before ...
- 11
3
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1
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4k
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ffmpeg vf scale shifts colors to washed out
Im trying to scale video down. No matter what I do the colors are always washed up as a result.
original:
After scaling:
Code I run for it
ffmpeg -i input.mkv -vf scale=1028:-1 output.mkv
log: log
...
- 33
3
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0
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166
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How do I compress a video and preserve quality in moving areas?
It's easier to notice details in still objects compared to moving ones, so modern codecs save bandwidth by reducing detail during movement. However, this optimization seems far too pronounced to me ...
- 131
2
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1
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4k
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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 ...
- 123
3
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1
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1k
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What's special about Apple-device generated HEVC files that (apparently) x265 can't produce?
Take this file, the first 10s of Hank Green's "editing challenge". It is H264 video + AAC audio. You can take that file and import it into Final Cut Pro X (FCPX for short), and edit it to your heart's ...
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2
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3k
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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 ...
- 111
3
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3
answers
5k
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Does HDR content have anything to do with codecs?
I am new to video codec(encoding/decoding) stuff. I am trying to understand the difference between H.264(AVC) and H.265(HEVC) HDR video content. I thought HDR video 'means' it has 10 bit color depth ...
- 41
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2
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53
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How to transcode HEVC footage on a mac if you don't have CC2018 yet [duplicate]
Is there a good free way to convert iPhone HEVC footage to .mov prores or something similar using a Mac (MacOS 10.12) with Premiere CC 2017? Googling provides lots of unreliable looking apps from ...
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1
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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 ...
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2
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1
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197
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Loseless conversion from IphoneX HEVC for PC - PPro
Looking for a ffmpeg command that would convert IphoneX HEVC 4K 25fps videos to any format that will work on PC - PremierePro and keep it lossless.
- 275
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2k
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FFMPEG - The result of converting video to hevc format lost audio (video only)
I'm new in programming, I have some movies and want to convert them to hevc format to reduce storage space but keep quality video, i tried with my code through ffmpeg:
**for %b in (*.mp4) DO ffmpeg -...
0
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1
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593
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MKVToolNix Splitting and Joining Stutter
I've been trying to split a tv show episode into two seperate parts, but whenever I try to rejoin the split files, I get a pixelation look on the merge locations.
I've been using MKVToolNix to try ...
6
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1
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5k
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How does ffprobe identifies I frame and IDR, when it sets key_frame=1
How does ffprobe identifies I frame as an IDR and sets key_frame=1.
Is it for the scene change?
My requirement is to filter out IDR frames: the steps I am following are
ffprobe output_file -...
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