I am trying to create an animated wall paper for OperaGX in the add-ons section, and I've uploaded an .mp4 twice and it's telling me that .mp4 is not supported. I would like to know all of the supported file types that could be accepted, I am currently converting the .mp4 to a .gif .
OperaGX only supports the following file types for creating add-ons: .gif, .jpg, and .png.
Related
Currently, my app creates GeoTiff tiled files using following options:
PROFILE=GeoTIFF
TILED=YES
BLOCKXSIZE=xxx
BLOCKYSIZE=xxx
COMPRESS=JPEG
PHOTOMETRIC=YCBCR
JPEG_QUALITY=xx
However, some apps that use my served tiles do not work due to "invalid" JFIF format.
How can I force gdal to ensure JFIF format in GeoTiff tiles?
See my own answer in https://gis.stackexchange.com/questions/426732/generate-jpeg-ycbcr-tiles-in-geotiff-file-with-jfif-format-instead-pure-jpeg-for/428023#428023.
Basically, solution involves gdal code modifications
Situation
I'm trying to use my own images in the Tensorflow Style Transfer demo, but they're causing the following error message:
InvalidArgumentError: Unknown image file format. One of JPEG, PNG, GIF, BMP required. [Op:DecodeImage]
What I've tried
The error message says the file format must be a JPEG among other file types. When I check the file info, it says Kind: JPEG image, and the file extension is .jpg.
The image was shot on a Google Pixel 6 Pro, pulled directly from Google Photos, and then uploaded directly to my GCS Bucket. So I can't understand how there could be a problem with the file format, or what to check for to resolve this.
I've also tried several links to the same GCS object.
https://storage.cloud.google.com/01_bucket-02/PXL_20220315_232045529.PORTRAIT.jpg
gs://01_bucket-02/PXL_20220315_232045529.PORTRAIT.jpg
But I'm getting the same error message with both.
I'm able to view the images in a browser window, so my authentication should be ok.
Causing further confusion, I downloaded one of the wikimedia images used in the demo, then immediately uploaded it to my GCS bucket, and it caused the same error message. The Wikimedia file was .jpg, but when I downloaded it, the extension was .jpeg.
This is the original Wikimedia file I was testing:
https://upload.wikimedia.org/wikipedia/commons/d/d7/Green_Sea_Turtle_grazing_seagrass.jpg
Any clarification on what might be going on with this would be greatly appreciated.
Doug
I changed the filename extension of my videos on the server from .mp4 to .zip. Now I want to embed the videos in my HTML web page, but it doesn't work due to the filename extension. I'm looking for a way to tell my front-end how to interpret the embedded file and read it as MPEG-4.
Why did you change the .mp4 to .zip? Video has pretty good compression already, and making it a zip file is unlikely to save you much (if any) in terms of the size of the object.
I want to use VideoJS in my project, and I also need closed-caption support. I have read the VideoJS docs on how to use a text-track from a WebVTT file, but most of my .mp4 files have captions embedded in the file itself, there is no WebVTT file available. How can I get the captions out of the mp4 using VideoJS?
Edit: We will be live-streaming video, which is why the closed-captions are embedded into a stream.
To do the extraction step, you don't/can't use VideoJS itself. Instead, there are various standalone video editors that can do the job...just do a google-search like 'video tools to extract sub-titles'. Preferably, find/use a tool that extracts subtitles/captions into an "SRT" file-type. Then, to convert into VTT files, there are various tools for that, too. [ For that step,I use the free SRT->VTT converter avail at: http://atelier.u-sub.net/srt2vtt ]
Opera mini browser can save HTML pages in OBML (Opera Binary Markup Language) format for offline browsing. I am wondering if I can convert a HTML file to OBML format and save in my phone for later viewing.
For doing so, I need details about the OBML format, which seems to be undocumented. Do you know more details on this OBML format?
Thanks for your time.
I reverse-engineered several OBML format versions and wrote a Python OBML to HTML converter along with format documentation. Generating OBML files might be more difficult, however, as it requires an actual HTML layout engine (all OBML elements are pixel-positioned rects).
A working way to save/open OBML files on your PC
http://java4me.blogspot.com/2008/01/opera-mini-as-pc-browser-big-screen.html
http://my.opera.com/opera.mini/forums/topic.dml?id=234030
Opera MicroEmulator
Nothing yet about OBML.
If the HTML is small in size you can simply upload the HTML to a file host or webspace, then access it using Opera mini then save it as OBML.