libvpx is a package, from the WebM project, that provides the reference implementations of the VP8 Codec, used in most current html5 video, and of the next-generation VP9 Codec.
Questions tagged [libvpx]
89 questions
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libvpx KeyError for webrtc
i am generating project of webrtc using gyp & while generating things, i got following error:
File "/home/rtcdev/Nishant/src/webrtc/build/gyp_webrtc", line 102, in
gyp_rc = gyp.main(args) File…
Nishant Bijani A
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warning: remote HEAD refers to nonexistent ref, unable to checkout. and no branches found
I'm trying to checkout libvpx but I get the error below.
sudo git clone http://git.chromium.org/webm/libvpx.git
Initialized empty Git repository in /opt/ffmpeg/sources/libvpx/.git/
warning: remote HEAD refers to nonexistent ref, unable to…
Anthony
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Is there any way to make chrome support VP9 and H.265(HEVC) on WebRTC?
I'm new to WebRTC. As VP9 can decrease the bandwidth, but I don't see any options to choose VP9 with the recent release Chrome 43.0 during a WebRTC session on Windows. The SDP video options don't include VP9 at all. Could someone show me how to…
Cooky Shi
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Ffmpeg performance issue when transcoding to webm
I have recently updated ffmpeg from version 2.0.2 to the most recent release 2.7. I installed it using the same building configuration as the old version and the same codecs version (libvpx and h264). When I tried to transcode an mp4 video to webm,…
Algold
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How to build libvpx for android arm as well as x86?
I have been building our Android app for armeabi-v7a. Now, to add support for x86 as well, I extended Application.mk:
APP_ABI := armeabi-v7a x86
The first problem I am running into is that libvpx can be configured either for arm or for x86:
$…
Peter
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Compilation error when compiling libvpx for FFMPEG
I'm compiling FFMPEG on my 64bit Ubuntu 14 machine. Everything compiled well, except for the libvpx library, which keeps throwing errors:
[AS] vp9/common/x86/vp9_subpixel_8t_ssse3.asm.o
vp9/common/x86/vp9_subpixel_8t_ssse3.asm:856: warning: label…
Flock Dawson
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How to parse VP8 bitstream with libav
I've just started to learn about VP8, so give me some slack if this is a dumb question.
H.264 Example
In the past I've worked mostly with H.264. Whenever I needed to parse H.264 bit streams, I would leverage libav to help me and use something like…
anoneironaut
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iOS open source build for armv7 , armv7s ,arm64
I am developing an application for iOS device,
and one of the requirement is to make use of libvpx webM, i could able to build it for armv7 architecture, but since has to be universal application, so this should also get it build for armv7s , arm64…
Amitg2k12
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VP8 Encoding results in grayscale image on Google Glass
The application I am working on is developed for Google Glass but runs on Android tablets as well.It uses VP8 encoding to transfer camera images to a remote application.
The preview format parameter on the camera is set to ImageFormat.YV12.
The VP8…
Peter
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libvpx configure script wrong path for Visual Studio 2012
I'm trying to build libvpx 1.3.0 under Visual Studio 2012 (vs11) under windows 8.1 (x64).
I read the build prerequisites (http://www.webmproject.org/code/build-prerequisites/) and configured libvpx as following:
./configure --target=x86-win32-vs11…
Thomas
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Where is VP9 Codec's support for Depth Channel?
According to Wikipedia's VP9 entry and Google's Discussion Board, VP9 supports both alpha and depth channels.
but i scanned the source code of libvpx several times. There is no doubt the alpha channel is there. But the only times the word "depth"…
user3324740
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VP9 video codec - libvpx version
Currently , I am using libvpx v1.0.0 for vp8. Can I use the same version for vp9 or do I need to change to v1.3.0?
Thanks.
Josh
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What is "chroma shift" in vpx_image_t struct of libvpx?
libvpx codec operations use vpx_image_t structure for exchanging uncompressed frame data.
I got through understanding what majority of the members mean, but I'm stuck with x_chroma_shift and y_chroma_shift. The only explanation provided in the…
Pawel Veselov
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compiling libvpx on ubuntu taking long time
I have cloned libvpx and run the following commands:
$ git clone http://git.chromium.org/webm/libvpx.git
$ cd libvpx
$ ./configure
$ make
# make install
After running make, it has taken 1 hour to compile and it is still running.
I noticed it shows…
Surinder ツ
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