No matter what I seem to try I can't get AWS MediaConvert to accept a job that is configured to output CMAF or DASH audio only. I found this on the AWS support forums:
https://forums.aws.amazon.com/thread.jspa?messageID=911037
Which if I understand correctly means that CMAF/DASH audio only output is not supported. This seems like a glaring omission as in order to build an audio streaming platform compatible with Android and iOS MediaConvert alone is insufficient.
I'm finding so little information (literally none) on producing audio only CMAF that I'm wonder if it's even done?
So the question is; does AWS MediaConvert support CMAF and/or DASH audio only output? assuming no, what are the alternative services/tools that do or am I barking up the wrong tree entirely?
Your understanding is correct.
MediaConvert currently supports the following audio-only output groups and configurations.
Supported codecs and containers for audio-only outputs
Further to the above, I confirmed that there are currently no plans on supporting CMAF audio-only outputs in MediaConvert. This doesn't mean however it will never be supported. The product is constantly improved and if there is enough interest from our customers, it could be added in the future.
What's New with Media Services?
Related
I have been looking around online for an answer for some days now, without any luck. So now, I hope one of you might be able to help point me in the right direction.
WHAT I AM TRYING TO DO:
I want to build a C# application where I can apply different types of distortion and pitching effects to all types of audio that comes out of a preselected audio endpoint.
It should not matter if the user is playing an audio stream or an audio file on their system. I want to apply effects to it before the audio leves the selected endpoint.
I have been trying to use some of the windows audio APIs like 'DirectSound' and 'WASAPI' and also the open source project NAudio. sadly all with no luck so far.
WHAT I AM STRUGGLING WITH:
I can't seem to figure out what windows API I should use or if I would have to make my own audio API that takes directly with the windows Audio engine: https://learn.microsoft.com/en-us/windows-hardware/drivers/audio/windows-audio-architecture
Please let me know your thoughts, or if you think I am looking at this all wrong.
Simpler solution: It should be possible in a soundcard driver if it can load effects.. SB live successors or EMU based cards are the cheapest and KXproject driver is awesome for those
I've built a webapp to host low-res proxies of our teams video files. The webapp is primarily for tagging and searching video. Additionally, I'd like to be able to play a random playlist of clips on TVs around the office. I've implemented this by "Casting Tab" to a Chromecast, and it works fine.
However, now I'm running up against the bandwidth limitations of my host. Latency and everything is fine, but to run a single TV's 2.5Mbps stream 8hrs a day for 23 days a month comes to about 207 GB/month, 20% of my alotted 1TB monthly transfer.
How can i build something that will "cache" these clips client-side, so that it doesnt re-download them unnecessarily? There are about 1000 clips. I'd prefer to keep it connected to my webapp via browser or some API endpoint so the RAND() stream of clips is constantly updated as people add to it.
Note: I asked a related question yesterday, and it seemed to fix my specific issue, but it doesn't seem to have worked at scale, so I'm broadening the approach a bit. Browser Caching of images and videos served via php query strings
Shaka Player has built-in support for offline playback, along with a pretty good API for listing offline assets, and removing them again.
This would require that you have your videos in MPEG-DASH format. Luckily Google also has a tool available for that. Shaka Packager can take your mp4's and package them for MPEG-DASH, provided the MP4's follow some simple requirements.
You could probably build something yourself using similar mechanisms to the Shaka Player, but it seems much easier to use Shaka for doing it.
I am wondering if anyone has success with audio record (from microphone on the users browser) and playback from a web based app (Ruby/RoR)?
What I have found so far - I could write a flex/flash app which will record the audio and then have a server side like Red5 or so to receive and convert. This sounds more involved and I also saw different types of hosting issues etc people are having - so I am thinking there may be better/easier solutions out there!! I looked at html5/web-kit too but seems to only works on chrome and is limited to text fields etc.
In my app, i want to record users voice, save it on a aws/s3 as mp3 or similar file format and play it back to user within the app based on users input/choice. While flash based solution is workable for now, non-flash based solution will be preferred as it will support more devices (you know devices I am referring)..
The only options for web based record are Flash, Silverlight or Java. None of these will work on an iPhone or iPad - You will need a native app for that.
You don't need to use Red5 for Flash recording - you can record direct to memory, optionally encode (or zip), and then upload the the data. You might be better doing mp3 encoding server-side using ffmpeg or SoX before moving the file to s3.
There is a way using HTML5 and a server. Just record a video.
Convert the video to audio, then use the audio as you wish.
This implementation takes audio from a video and runs
ffmpeg to extract the audio:
http://goo.gl/A0bya
This is in PHP, but it should not be too
hard to create a Ruby version. Easy peasy.
My question is similar to this question. I want to capture and modify video stream from web camera in Windows transparently to all applications using web camera. Whether should it be some kind of driver? Is it possible? Is there API for such tasks? I'm reading about DirectShow filters. Am I on the right direction?
Thanks for your help!
You can use DirectShow to capture the video stream from the camera, modify it, and then pass it on to either a DirectShow source filter (will be seen by some apps as "webcam") or to a kernel driver (will be seen by pretty much every app). If you're new to this do realize this is a lot of work. Depending on what you want to do, consider buying ready made components for your developing environment or even complete applications that can do this (I developed one).
I plan to open a smaller and more specialised Youtube like site where users can upload their videos in a variety of formats and it will be converted to .FLV, and then posted on the website.
Most of the code I can handle myself, but I wanted to get some feedback on the uploading and converting stage of this. I'm planning to have the converting done on a separate server, independent of the one hosting the site. How would I go about converting the videos?
I checked out ffmpeg, would this be the best option to use? I want the videos in both high and low quality so it would be preferable to choose the bitrate.
Thanks.
Yes, ffmpeg would be the best option. It's simplest and most versatile.
Take a look at videopress.com - the video sharing service for wordpress.com. The entire solution is open source and uses ffmpeg to transcode video into multiple formats for embedding in websites.
You can access the code at http://code.trac.wordpress.org/
You should be able to either use this out of the box or customise if for your particular project.
You might also find something like Panda (http://pandastream.com) useful. It's an open source video encoding service.