I´m broadcasting hockey with wirecast and use applescripts triggered by a usb-controller to create replays, highlights etc. I need as much as possible of what I´m doing to be automated as I am alone working with this witch means I´m also the cameraman :)
Now I want to be able to convert and upload a .gif of the last scored goal. So far I have been able to convert my .mov file to .gif but haven´t found a way to upload it to twitter.
The workflow is: when a team scores a goal I push a button on my usb-controller. This stops wirecast-recording, opens the recorded file in quicktime player 7, trims it down to the last 16 seconds and when that file is finished playing it saves as .mov and converts to .gif.
Here is where I run into trouble. I have been able to make twitter posts by using https://ifttt.com but it dosen´t seem to suport uploading .gif files. If I manually upload the .gif on twitter.com it works. What I need is to make it automated.
Anyone have ideas of how to do this? I´m pretty new to scripting and really appreciate any help :)
Well it seems like I was doing it right from the start but my .gif was to large (11.5 Mb). I made it shorter and with less frames (1.8 Mb) and now it posts as it should when using ifttt.com. Thank you Björn :)
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I need any idea to do this with javascript in ruby on rails application.
I want the user to upload a video, then the file has to be shortened from either start or finish. The purpose of that is to make the video smaller in size.
Then the video should be uploaded to server.
I have looked at https://github.com/danielcebrian/rangeslider-videojs but maybe someone knows a better solution
For uploading I have looked at FFmpeg, for cropping the video server side.
First off I should point out that if the editing process needs user interaction in the browser then this is not a simple problem, it's pretty complex and there's a lot of ways you could do it.
Uploading is a pretty easy part nowadays, as the built in rails ActiveStorage module works pretty well.
Now, if you don't need to edit videos in the browser, just want to clip them down to a specific size, then that is not too bad. You can indeed just have rails call ffmpeg with system. The -ss option is the flag you need, it's for cropping video.
If you do need user editing of videos in browser then you'll need to investigate a good JavaScript plugin for this, because it's not something that is going to be quick to write by hand.
I need suggestions for a good way to store backend song previews (right now looking at itunes and maybe spotify and soundcloud). The idea is that I need to pre-download and maybe cache the 30-second and less audio files with easy recall.
Then I need a good way of overlaying the audio preview to a user video quickly and generating a new asset for that.
I imagine there are already good libraries for these tasks.
I'm thinking S3 right now for storage? Maybe that or something else? Thanks in advance
Here's a couple of microservices that might help: audio and video if you're ok using a mBAAS.
After finally successfully finding a way to concatenate multiple voice files into one single audio file on the iPhone, I am am now trying to superimpose an audio file over the length of the voice file.
So basically I have two .m4a files:
voice.m4a which is about 10 seconds for example.
music.m4a which is about 5 seconds.
What I require is that two file be combined in such a manner that the resulting single audio file now contains the music in the background of the voice file for the length of it, so basically the resulting output should have the 10 seconds of voice and the 5seconds of music repeated twice. It is absolutely important to have a single file that contains all of this.
I am trying to get all of this done in an application on the iPhone.
Can anyone please help me out with this?
If you are looking to do that programmatically, you will need to go deeper down into CoreAudio. For a simpler solution you could use AudioQueues or for more fine grained control AudioUnits and an AUGraph. The MultiChannelMixer is the Audio Unit you are looking for. Unfortunately there is no space for an elaborate tutorial here (would take a couple of days to write just the tutorial itself), but I am hoping I could point you to the right direction.
If you decide to go down that path and want to do further audio programming then this one time simple example, then I strongly suggest you buy "Learning Core Audio, A Hands-on Guide to Audio Programming for Mac and iOS" - Chris Adamson, Kevin Avila. You can find it on Amazon, paperback or Kindle.
I am trying to implement Progressive Downloading of a video in my iOS application that can be played through AVPlayer. I have already implemented a downloader module that can download the files to the iPad. However, I have discovered I cannot play a file that is still being written to
So, as far as I can tell, my only solution would be through downloading a list of file 'chunks' and then keep playing through every file as they are ready (ie: downloaded), probably using HLS
Searching I have come across this question which implements the progressive download through hls but other than that, I can find no other way
However, I keep coming across search results that say how to configure web servers to leverage the iOS support for HTTP Progressive Downloading, but with no mention of how to do it from the iOS side
So, any one have any ideas and/or experience about this?
EDIT: I have also found there could be a way of doing it other way around (ie: streaming, then writing streamed data to disk) which was suggested by this question but still cannot get it to work as it seems it does not work with non-local assets!
From what you say, you might want to change approach and attempt to stream the file. Downloading and playing at the same time, I would say is the definition of Streaming. I hate when people post links to the Apple documentation but in this instance reading a tiny bit of this documentation will help you more than I ever can. It should all make sense if you are lready working with connections and video, you just need to change your approach.
The link: https://developer.apple.com/library/ios/documentation/networkinginternet/conceptual/streamingmediaguide/Introduction/Introduction.html
When uploading a file I know I can access its properties but is it always the same or it varies? I mean, I am writing an app for myself where I can upload songs or videos to my server to watch later, and I'd like to populate the info about said files automatically as much as possible so I was wondering if it's possible to get things like length, quality, name, artists, artwork, or pick a first image like youtube does for its videos?
I'm fairly new to ruby (using rails) so I am unsure as to where to find this or if it's even possible
You can do that using FFMpeg (read the license first).
FFMpeg gives you everything you were asking about and some more.
it's very powerful.
For mp3, check out mp3-info, I haven't used it before but looks promising...