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Great idea and very promising application. I've exported my favourite tracks via foobar2000 and last.fm statistics via softplaylist plugin (it creates XPSF playlist) et voila! my videoplaylist was created en instant.
I think it's useful and very well made. Nice job!
it works & sounds great. but i'd like to close video part completely. also a browser extension could be nice for it.
I was a bit confused at first. You should have more details on how it works
i misunderstood it at first. i thought you meant it would parse out a text file looking for meaning/relevancy and give you videos based on the text.

It's nice what you've done, just wasn't my first reaction to the Show HN text.

Sorry for the confusing title. roll.io takes txt files, searches every line in youtube and plays the results one after the other.

This is the result of a tiny hackathon. We wanted to listen to the old playlists of Woxy.com

Can you have man/help page? Because a lot many guys were confused at first. Nice job.
it became apparent after I saw the sample "upload text" but perhaps having a default text box with sample lines in it would remove the confusion.
That is a good idea! Like Google advertising, where the ads are selected based on the textual context -- words in your search string or email or website -- but instead of ads as the output, short video clips. For long text blocks, run the videos alongside a scrolling reader such that the video and text stay synchronized. The word "respect" prompts an Aretha Franklin clip, maybe. Appeal to the [people who think they are] multitaskers! You'll have nerd users searching for which Shakespearean passages lead to the most amusing clip playlist!

If the video bandwidth is all Youtube's, and the UI is Javascript, your ongoing cost is mostly the server time to run the text against your corpus and spit out a playlist.

I love when startup ideas spring from a misinterpretation of how someone else summarizes their product.

YouTube's playlist management is a PITA, so this is really a great idea. And it's done following the KISS principle, kudos!
Voted up if only for the title.
I fed it with my lastfm charts, good job.

Empty lines are currently displayed and link to a random video. A quick improvement would be to just skip these empty lines.

very nice idea! would be nice if we could type out playlist in textboxes and then open them via roll.io so that those boxes are easy to emded in forums when someone wants to list out a few viddys without going to youtube to expressedly look & link for them.
much better than youtube, clear and to the point, simple. great job!
I love how simple yet functional it is. If I can suggest just a few minor things:

1. We have the 'hide video' options, can we please have 'hide list' option which makes video bigger?

2. Can we have the 'always select best quality' switch?

With these features roll.io would make it to my favorite music players list.

Really nice idea. I have created something similar but I try to create a playlist for those who have last.fm accounts: http://lastvj.appspot.com
Great idea, but definitely needs a better explanation as I misunderstood it at first. Obviously the next step is allowing users to save their playlists.
I really like this, I had a similar idea a few years ago with 'YouLink' - essentially solving the playlist problem of YouTube - but I didn't think of making such a simple and clean execution. Mine was more Youtube meets iTunes style - pre Spotify days.

Plus back then, bandwidth was not so great / YouTube often buffered causing breaks in the music. So I abandoned the project.

However Roll.io is a great solution, often I have the situation where I have a track listing for something that I can find individual songs for on youtube, but need to quickly make a playlist out of it, but don't due to the horrible youtube playlist interface.

This is especially true when it comes to 'Remixed' music where the songs have particular unique names. e.g. http://roll.io/#4fvjsj!0

Thanks for making it. The only request I would have would be to automatically remove or recognise track listing numbers at the start of the tracks.

E.g. if I copy a track listing I often have: 1. SongA 2. SongB 3. SongC 4. SongD

- It is a slight pain to manually remove the 1., 2., 3., 4. from the front and may cause incorrect matching on the songs if I leave them on.

after collecting some data, we will prepare some regexp for the common mistakes.
This is great. Congrats! For me the killer feature is Grooveshark support :)
Very useful. I always wished for something like this.

I was a little disappointed to see that it didn't work on the iPad, though. The page just tells me (in grey text on a black background btw) that the flash player is needed, although embedded YouTube videos usually work without the need for flash on this thing.

I know, it's a pitty but probably roll.io could never be suitable for ios.
just thought of something else. It would be quite cool if we could direct roll.io to play files via url parameter. Say we want to play 3 songs. We could type something like this in a forum:

http://roll.io/song1title-song2title-song3title

With '-' as delimiter or some other char/word

Awesome idea. Drap and drop upload oft txt files would be nice.
This is a great idea, and amazing for previewing new albums! However, sometimes when it fails to search and substitutes, it would be nice to be able to hand edit the playlist.
Thanks for sharing, this looks useful, though not sure the shit mantra is necessary.
I second this. It's crass and unnecessary and just makes me look at it.. i dunno... differently.

And because of that -- and only that -- I would never see myself sharing this with people or using it to send video playlists to people aside from some anonymous web forum.

That's a pretty shitty reason not to share this with people.
And the bad pun award goes to jh3!

Seriously, though, I'm not one to be easily offended -- and I think fake umbrage in our society has been taken to a ridiculous level (especially in politics). But the reason I like good design is because when something is well designed it gives me a sense of calm and peace. Having "I eat text and shit out whatever" is just very bad design to me.

And it's offensive enough that why would I risk offending somebody? Why do I care enough about the site to take on that risk?

I understand. It also seems to be misleading according to some comments. I will think it through. Thank you.
I'm not one to be easily offended either, but I am also less likely to share this with my 12 year old daughter who really likes to explore youtube. Of course all she plays is that bieber kid, some kid named cody and lady gaga.
firehose of a firehose. i like it. one day, there will be some semantic sense made out of this.
I wonder why everyone seems to get what this does from reading the description. When I read "eat and shit", I assume that the "food" is "transformed" into ... youtube videos. So I thought this would generate new videos and upload them to youtube automatically, maybe showing the txt files as a huge StarWars scroller, or something.
This is also exactly what I thougth (with the starwars scroller and all!), but the website is pretty self explainatory once you visited it and cliqued "enter txt" link.
Sorry. that's me trying to sound cool in 80 characters (minus "Show HN:")
Personally, I could go for less 'cool' on HN and more clarity and accuracy instead.

'Show HN: roll.io plays youtube videos searching list of text. Useful?'

That aside, neat app. It's a clever tagline though.

For this particular link I'm not sure I would have clicked it with the text you suggest. And I'm glad I did click it. But I agree that in the general case, titles on HN should be accurate rather than catchy.
No need to. We prefer quality over wordiness.
Yeah, I had uploaded the first 10 chapters of Moby Dick, all along thinking "what is this annoying video playing," before realizing it doesn't do a StarWars scroller.
Once you get what it does, it becomes addictive.

I hope this idea stays as focused and bloat-free as it is right now, I just love it.

LOVE it...I would completely use it and I got it from the first look!