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Questions tagged [vp9]

23 questions
15
votes
5 answers

How to force Chrome to use integrated GPU for decoding?

I want Chrome to utilize iGPU (GT630 on i7-8700k) for video decoding, especially VP9 decoding on YouTube. My discrete GPU is GTX970 and it is not capable of decoding VP9. Currently, VP9 is software decoded on my system, putting load on CPU and…
Gepard
  • 1,877
4
votes
2 answers

How to encoding VP9 video using ffmpeg and vp9_qsv?

I am trying to use ffmpeg to encode VP9 video with vp9_qsv (Intel Quick Sync Video hardware support) on windows 10. I have previously successfully encoded VP9 video with libvpx-vp9, but that uses the CPU and is rather slow. Now that I am trying to…
Bazzz
  • 177
3
votes
0 answers

How to use VP9 transcoder when streaming video in VLC Player?

I was trying to stream video with VLC using the very low latency VP9 encoder. Both my OS codec library and VLC player (3.0.16) has been upgraded to the latest version When I select VLC Player > Streaming > Video Format > Transcoding option, I only…
tribbloid
  • 141
3
votes
1 answer

VP9 encoding with FFmpeg: relation between -speed and -deadline options

I've read in different places about -speed and -deadline options for VP9 encoding with ffmpeg, they seem to control more or less the same aspect (compression efficiency to execution time ratio), but I could not find how exactly the two are…
Alexey
  • 1,323
3
votes
1 answer

Lossless VP9 Webm Encoding of PNG Sequence with Alpha in FFmpeg

I'm trying to encode a sequence of 32-bit 8bpc PNG images (RGB with an alpha channel) using the lossless VP9 codec with ffmpeg; specifically: ffmpeg -framerate 60 -i out%04d.png -c:v libvpx-vp9 -lossless 1 -pix_fmt yuva420p output.webm This seems to…
EllipticalInitial
  • 1,800
3
votes
2 answers

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: ffmpeg -i ../4K-HDR\ Videos/The\ World\ in\…
Michele Dall'Agata
  • 329
2
votes
2 answers

ffmpeg encoding to VP9 results in Google Chrome-unplayable video, while to VP8 works

Plenty of time passed, since I have encountered the problem, specified in the subject. I tried multiple ffmpeg static builds, have built it from Git repository myself with different flags and on all major operating systems, even built libvpx, but…
Neurotransmitter
  • 1,291
  • 16
  • 35
2
votes
0 answers

FFmpeg concat no working

I trying to concat videos downloaded from yt-dlp using and getting the error ffmpeg -y -f concat -safe 0 -i files.txt -map 0 -c copy merged.mp4 I also tried using 'vcodec vp9', '-bsf:a aac_adtstoasc', '-c:v libvpx' but to no avail getting the error…
xmsk
  • 21
2
votes
2 answers

Settings For ffmpeg For Best VP9 Quality for Web Publishing

I have video in Apple ProRes 422 format which I plan to encode to Google's VP9 for publishing on the Web. The source is: Stream #0:0(und): Video: prores (apcn / 0x6E637061), yuv422p10le(bt709), 1920x1080, 114644 kb/s, SAR 1:1 DAR 16:9, 23.98 fps,…
Neurotransmitter
  • 1,291
  • 16
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1
vote
0 answers

FFMPEG > The transcoded video contains insufficient number of frames

I am trying to transcode the videos (which I receive via the javascript media recorder in streaming mode by telephone) to use the VP9 codec and also to resolve concerns about the duration of these videos, the command ffmpeg that i use is…
Kalkilo Najmax
  • 11
1
vote
0 answers

ffmpeg & ffprobe fail to parse dash/vp9 file while mediainfo can

(I attached the file, only 808b, as a base64). This is supposed to be a valid file, but ffmpeg/ffprobe fail. I'm using a recent build of ffmpeg, but I also tried with older version. I'd like to understand if it's a ffmpeg bug. ffprobe version…
paul
  • 11
1
vote
1 answer

Colors change when converting GIF to VP9 WebM using FFmpeg

The colors come out fine when I try using VP8 WebM or H264 MP4, but whenever I use VP9 WebM there's a slight change in color. The change in color can be seen in Chrome, not sure about other browsers or viewers. I also tried ezGIF online GIF to WebM…
SportySpice
  • 193
1
vote
1 answer

Downscaling VP9 from 4K to 1080p without re-compression

I have a video file that is a 4K upscale of a 1080p video in VP9 (upscaled to 4K to force Youtube to use higher bitrate for the video). I want to downscale the 4K video file to 1080p while (effectively) losing no data, ie not forcing re-compression…
yuuuu
  • 113
1
vote
1 answer

ffmpeg libvpx-vp9 change clock rate

I have some problems with live vp9 encode via ffmpeg. ffmpeg -loglevel debug -protocol_whitelist file,crypto,udp,rtp -i /tmp/sdp_files/33228ae0-ed0c-4935-9da4-c55ae6a177b8.sdp -r 30 -an -max_muxing_queue_size 1024 -quality realtime -threads 16 -tune…
Lukas Koza
  • 13
1
vote
1 answer

When do you need to use the extension h264ify to force H264 Encoding, over YouTube's default VP9 Encoding?

There's an extension for Google Chrome and Mozilla Firefox called h264ify, the extension forces YouTube to use h264 encoding over VP9 and similar encodings. In 2019 is this still necessary? Most GPUs can decode h264 without an issue, what about VP9…
user765445
1
2