Questions tagged [vp9]
The vp9 tag has no usage guidance.
21
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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 ...
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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 ...
- 11
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What can I do to debug and avoid decoding artifacts with RTP in ffmpeg?
I do encoding and decoding of a VP9 RTP stream programmatically, and I am experiencing occasional colorful artifacts like these:
In the ffmpeg log (both when using ffplay and my own code), this ...
- 806
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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 > ...
- 121
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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 ...
- 193
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2
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How to use Intel Quick Sync Video to encode in VP9 using ffmpeg on Windows
How do I use ffmpeg on Windows using Intel Quick Sync Video (qsv) to encode a video in VP9? The command that I am using now is:
ffmpeg.exe -init_hw_device qsv=hw -filter_hw_device hw -i input.mkv -vf ...
- 167
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ffmpeg and vp9_qsv: Error during encoding: NULL pointer
I'm trying to use ffmpeg to encode VP9 using vp9_qsv on windows 10. My CPU supports QuickSync (i7 11700k). I am aware of the multi monitor issue of vp9_qsv and found a way to work around the [vp9_qsv] ...
- 173
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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 (...
- 113
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Vokoscreen VP9 Codec in Debian 10 Buster
Kdenlive for Debian Buster allows me to render using the VP8 and VP9 codecs. Also, I think Vokoscreen 3.0.8 for Win 10 allows me to record using VP9. Unfortunately, when I install Vokoscreen 2.5.0 ...
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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 ...
- 167
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1
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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 ...
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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 -...
- 13
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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 -...
- 1,630
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Google VP9 ffmpeg examples error
On the Google developer vp9 documentation here, the recommended command ffmpeg command lines seem to be incorrectly formed.
It seems to me that the command such as this
ffmpeg -i ...
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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 ...
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