libwebp | WebP codec : library to encode and decode images | Base64 library
kandi X-RAY | libwebp Summary
kandi X-RAY | libwebp Summary
WebP codec: library to encode and decode images in WebP format.
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QUESTION
I tried to dockerize my Wagtail Web Application and this error Occurred.
I tried docker-compose build
there was no errors.
after that i tried docker-compose up
then this error occurred
I really need help on this error.
Error-
ANSWER
Answered 2022-Apr-10 at 15:46You didn't mention wagtail versions or if this is an upgrade. But that error sounds like this: https://docs.wagtail.org/en/stable/releases/2.11.3.html#run-before-declaration-needed-in-initial-homepage-migration
QUESTION
I created a live stream session on instafeed.me then used ffmpeg
to send an MP4 file to the stream. But I get IO error.
The command is
...ANSWER
Answered 2021-Oct-02 at 00:09Instagram apparently does not like MP3. Use AAC instead. Replace -acodec libmp3lame
/-c:a libmp3lame
with -c:a aac
.
QUESTION
I am converting some old mjpeg videos (stored in .avi container) to h.265 (.mp4 container) but am noticing the colors are smearing. Using the terminal command:
ffmpeg -y -i "input-file.avi" -c:v libx265 -vtag hvc1 "output-file.mp4"
I get the following image (notice how the red and blue are stretched donward). There is a lot of motion in the scene, but the motion is mostly horizontal:
Any idea what might cause this? The detail and resolution seem fine, just the colors are being interpreted weirdly.
Full output:
...ANSWER
Answered 2022-Mar-10 at 18:58Your file seems to be missing some color information:
QUESTION
I converted an avi file to a mp4 file with the following command, but the converted mp4 file produced no audio when played with QuickTime (no such problem with other players). I was able to convert mkv to mp4 with the same command without the audio problem.
...ANSWER
Answered 2022-Feb-06 at 19:04From your log I can see that your input audio is MP3.
QUESTION
I have a local python project called jive
that I would like to use in an another project. My current method of using jive
in other projects is to activate the conda env for the project, then move to my jive
directory and use python setup.py install
. This works fine, and when I use conda list
, I see everything installed in the env including jive
, with a note that jive
was installed using pip.
But what I really want is to do this with full conda. When I want to use jive
in another project, I want to just put jive
in that projects environment.yml
.
So I did the following:
- write a simple
meta.yaml
so I could use conda-build to buildjive
locally - build jive with
conda build .
- I looked at the tarball that was produced and it does indeed contain the
jive
source as expected - In my other project, add jive to the dependencies in
environment.yml
, and add 'local' to the list of channels. - create a conda env using that environment.yml.
When I activate the environment and use conda list
, it lists all the dependencies including jive
, as desired. But when I open python interpreter, I cannot import jive
, it says there is no such package. (If use python setup.py install
, I can import it.)
How can I fix the build/install so that this works?
Here is the meta.yaml, which lives in the jive
project top level directory:
ANSWER
Answered 2022-Feb-05 at 04:16The immediate error is that the build is generating a Python 3.10 version, but when testing Conda doesn't recognize any constraint on the Python version, and creates a Python 3.9 environment.
I think the main issue is that python >=3.5
is only a valid constraint when doing noarch
builds, which this is not. That is, once a package builds with a given Python version, the version must be constrained to exactly that version (up through minor). So, in this case, the package is built with Python 3.10, but it reports in its metadata that it is compatible with all versions of Python 3.5+, which simply isn't true because Conda Python packages install the modules into Python-version-specific site-packages
(e.g., lib/python-3.10/site-packages/jive
).
Typically, Python versions are controlled by either the --python
argument given to conda-build
or a matrix supplied by the conda_build_config.yaml
file (see documentation on "Build variants").
Try adjusting the meta.yaml
to something like
QUESTION
I am trying to enable package of ffmpeg-kit-react-native in react-native.
The sample commands given in the example executes successfully. But I want to use libwebp
for converting gif files to webp which is under package named video
. As instrcuted . I have to enable the package to use some libraries.
2.2.1 Enabling a Package on Android Edit android/build.gradle file and add the package name in ext.ffmpegKitPackage variable.
...
ANSWER
Answered 2022-Feb-04 at 16:44add this in your node_module/ffmpeg-kit-react-native/android/build.gradle
QUESTION
I'm trying to convert all the songs in a folder from flac to alac. All the files in the folder are flac.
What I'm writing:
...ANSWER
Answered 2022-Feb-03 at 22:07The forfiles
command is a nasty beast, because there are several caveats:
- it is slow (particularly because it cannot run internal commands of the hosting command prompt);
- it handles wildcards differently than most other commands, hence
/M *.*
does not match all files but only such with an extension; to really match all files, use/M *
or skip it since it is the default anyway; - it applies backslash-escaping, which is particularly annoying with paths ending in
\
, like the root directory of a drive/P "D:\"
, which causes a syntax error since the closing quotation mark is considered as escaped; to work around that, preferably append a.
like/P "D:\."
, or remove the quotation marks like/P D:\
, though this exposes potential whitespaces or special characters to the parser; - all of the special
@
-variables that return the path and/or name of iterated items provide the values in quoted manner, which is particularly frustrating when it comes to concatenation; - it iterates over both files and directories that match the given mask; to distinguish between them you could use the special
@isdir
variable, but you will need anif
statement for this (likeif @isdir==FALSE
orif @isdir==TRUE
), which is an internalcmd.exe
command, requiring its explicit instantiation even when you would not need it else; - handling of the command behind
/C
and its arguments is terribly implemented, leading to the problem that directly running external commands (so withoutcmd /C
) may fail, unless you are aware of the mostly working fix by stating the command name twice (like/C "command.exe command.exe --parameter argument"
); - even its basically nice
/D
option (which is the only reason whyforfiles
might suit better thanfor
) to filter for the relative last modification date (but not time) is badly implemented when a positive number (like/D +1
) is used, because this uselessly points to the future;
All of these issues lead me to the point that I suggest not to use forfiles
and to use a standard for
loop instead, like this (note also the changed mask *.flac
):
In a batch-file:
QUESTION
I've developped Java application to make some litle web scraping tasks with Selenium. It work fine in my local environment with Windows 10 and both chrome / FireFox last versions with their appropriate driver path configured.
The thing is I need my application to be in a container to deploy it and I've got issues. I've created a Dockerfile based on Alpine, and installed what need to be installed (helped by some posts found on the internet). With the FireFox driver it's working almost fine for the first operations but some do not work the same as they do in my configuration in local and some even crash the client... That's why I've tried with chromium but I've got some issues with a connection to the browser not even working.
I've spent hours already on this and start thinking maybe I'm missing something, am I supposed to do that way by dowloading browsers and driver in my Dockerfile ?
For now I sucpect the versions of FireFox or the geckodriver associated not behaving the same as the one I've got on my machine and I can see the browser when It's working inside the container only logs I've added.
Dockerfile (for FireFox browser try) :
...ANSWER
Answered 2021-Aug-26 at 17:36Indeed Jortega I've based my image on the selenium image : https://hub.docker.com/r/selenium/standalone-firefox
Here is my Dockerfile
QUESTION
I install new modules via the following command in my miniconda
...ANSWER
Answered 2022-Jan-06 at 20:11Consider creating a separate environment, e.g.,
QUESTION
I'm having regularly issue with hvc1 videos getting an inconsistent number of frames between ffprobe info and FFmpeg info, and I would like to know what could be the reason for this issue and how if it's possible to solve it without re-encoding the video.
I wrote the following sample script with a test video I have
I split the video into 5-sec segments and I get ffprobe giving the expected video length but FFmpeg gave 3 frames less than expected on every segment but the first one.
The issue is exactly the same if I split by 10 seconds or any split, I always lose 3 frames.
I noted that the first segment is always 3 frames smaller (on ffprobe) than the other ones and it's the only consistent one.
Here is an example script I wrote to test this issue :
...ANSWER
Answered 2022-Jan-11 at 22:08The source of the differences is that FFprobe counts the discarded packets, and FFmpeg doesn't count the discarded packets as frames.
Your results are consistent with video stream that is created with 3 B-Frames (3 consecutive B-Frames for every P-Frame or I-Frame).
According to Wikipedia:
I‑frames are the least compressible but don't require other video frames to decode.
P‑frames can use data from previous frames to decompress and are more compressible than I‑frames.
B‑frames can use both previous and forward frames for data reference to get the highest amount of data compression.
When splitting a video with P-Frame and B-Frame into segments without re-encoding, the dependency chain breaks.
- There are (almost) always frames that depends upon frames from the previous segment or the next segment.
- The above frames are kept, but the matching packets are marked as "discarded" (marked with
AV_PKT_FLAG_DISCARD
flag).
For the purpose of working on the same dataset, we my build synthetic video (to be used as input).
Building synthetic video with the following command:
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