Timestretch (speed up) mp4 playback to 1.5x or 2x

Is there any way to speed up playback of an mp4 video using the VideoDisplay or netStream? For training videos it would be useful to watch the videos at 1.5x or 2x speed for viewers already familiar with the content. I know that QuickTime and Windows Media Player can change the playback speed but have not found a way to do this in the FlashPlayer.

MPEG Streamclip can play directly at 2x, but not 1.5x. With some practice, it is understandable. Unlike QuickTime Player, it does not keep the pitch the same, so you have to use Audio Hijack Pro
<http://www.rogueamoeba.com/audiohijackpro/>
with the Apple AUPitch effect set to -1,000 to get the pitch back to normal. (If you aren't recording, you can use it in its free trial mode.)

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Context menu "Page Speed" in video playback

In clarification to answer given to https://support.mozilla.org/en-US/questions/961774#answer-463032 (closed thread): The context menu "Page Speed" in video playback applies to a html5 video playback streams. Older flashplayer video does not support this feature. This is not related to tab mix plus addon.
(this is comment rather than question)

See answer above
Check http://www.youtube.com/html5 that it is enabled if applicable. Html5 player test videos can be found at http://www.quirksmode.org/html5/tests/video.html if you are not sure where to find a video that will show the "play speed" context menu. If you believe that a html5 video stream is available for the web page but are still seeing the flashplayer video you need to temporarily disable flash support before loading the web page. For that, you may like to try the quickjava addon , which gives you a button to turn flash on/off while browser is running. If you don't see any video after disabling flash then that page does not support an alternate html5 player stream.

Speeding Up Movie Playback on Ipad (Like Quicktime can do)

Hello,
I watch a lot of training videos for my work. On my laptop I can speed them up using Quicktime's built in AV features.
Is there a way to do the same thing on iPad?
Or is there an application that will speed up Video playback?
Thanks

Azul can speed up video playback, but I'm not exactly sure how to open videos on the device in the app. You can download videos directly to the app though.

Lumia 800 and 23.976 FPS MP4 - Playback Issue

Quite lately, I have been wondering, if I should bring up this issue or not. Thought, what the hell - lets pen it down anyway.
So here's the deal, I have a lot of 720P DTS/DD HD movies which I generally re-encode to H.264 lower bit rates (1500 to 2000 kbps) and Audio to AAC and finally MUX them in MP4 (sounds terrible right !). The resultant file plays fine on VLC, HOWEVER, its terribly laggy/jerky on Lumia 800.
After a lot of hit and trial, I found a workaround though : Mux the H.264 Video stream @ 25 fps and Speed up the Audio from 23.976 to 25. Now the movie playback on Lumia is tolerable but not that smooth.
My N8 can play 23.976 Movies just fine. Now the Question - Why is Lumia 800 not able to playback the most widely used 23.976 framerate encoded movies and why I have to increase the FPS (to 25) in order to achive a decent playback.
PS: Movies which are @ 30 fps has absolutely brilliant playback on Lumia, though. But unfortunately, we cannot speedup 23.976 to 30, coz speeding up the Audio to 30 framerate makes the audio sound terrible and cartoonish.
EDIT : Let's make it more clear. The culprit is not 720p. I even tried resizing the video to 800x450 (Progressive) and keeping the original framerate to 23.976.The playback is still noticeably jerky. So the culprit is definitely the framerate.
Cheers !!

@ noenid : Hey buddy... Still stuck with the playback issue.. I realized that long back and am glad that I finally gave up on Nokia. Few weeks back I just bought Sony Xperia Z. Now that's what a "smartphone" should be... Its almost impossible to find something that the "Z DOESN'T DO"...
Maybe Nokia can convince Microsoft to re-design the Windows Phone OS and bring it at part with other OS. I really don't know why Microsoft chose to go the "Apple Way"... They may say "Security" >> to which I say "**bleep**"....
And why do I say **bleep** ?? Depite all the security and locked OS API's, I still don't see any substantial acceptance of Windows Phone OS in Business community... Android on the other hand, was highly criticized for being "vulnerable" >> But look around man... Almost every banking / IT / Financial Sector have their apps on it.. I really don't want Windows Phone OS to roll-over and die...
As they say: You can fool me once, but not twice...

Choppy mp4 playback in iTunes

Until tonight, I've never had issues with video playback in iTunes. I have a library of mp4 video files that I've played successfully in the past with little or no video quality issues.
All of a sudden, none of my videos will play correctly in iTunes. The video is incredibly choppy, with a new frame or two playing every 30 seconds while the audio plays relatively normally. If I open the same file in another player (VLC or WMP), the file will play correctly with no choppiness. In fact, I can play the video file in both players at the same time with zero quality loss, so there's no lack of computer power that would cause this in iTunes. To the best of my knowledge, nothing changed on my system to prompt this - I was literally in the middle of watching a video when it happened.
After experiencing this issue, I upgraded iTunes, Windows, and my video card drivers to the latest versions/drivers (rebooting several times in the process), but this did not help. Next, I followed all of the instructions in the relevant support document (http://support.apple.com/kb/TS1718), also to no avail.
For the heck of it, I rented an HD movie from the iTunes store and had the exact same problem. I originally thought that this might be an issue with my media, but it is clearly not.
I often stream video from my PC to my AppleTV, and this is also experiencing the exact same choppy video (as you would expect).
I have no clue what else to try. I would prefer to watch the videos in another player, but this is sadly not an option if I wish to continue using my AppleTV. Has anyone else experienced this (or a similar) problem? I'm at my wits' end, and very unhappy that I spent so much time transferring my video library into iTunes. Nothing substantial changed on my computer that should have caused this, especially not in the middle of watching a movie. Any help or further ideas would be greatly, greatly appreciated.

Solution: format computer because iTunes is terrible. Problem "solved," I guess

Apple TV speeds up video playback on files ripped from DVDs - it looks like it's being fastforwarded slightly.

I just set up my Apple TV 2, only to find playback issues from the start.
Whenever I try to play videos from iTunes, the playback is noticeably faster than it should be. It's almost as if the video is slightly sped up, and the audio is in sync with this. The aspect ratio is also very different on some of these videos (and this doesn't correct on my TV as it does on my laptop screen) - by which I mean that the picture appears stretched on some, but not others. These are files I have ripped from my DVD collection.
What can I do about this?

Ok, now I understand.
I haven't directly used those digital copies, per your original post it sounds is as it plays fine in iTunes but just not on apple tv
Here is the compatibility list for ATV2, in iTunes right click and get info for one of the files to see if it falls within
H.264 video up to 720p, 30 frames per second, Main Profile level 3.1 with AAC-LC audio up to 160 Kbps per channel, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats
MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats
Motion JPEG (M-JPEG) up to 35 Mbps, 1280 by 720 pixels, 30 frames per second, audio in ulaw, PCM stereo audio in .avi file format

Speed up podcast playback?

I love the feature on the iphone and ipod touch that lets you play back podcasts at 2x speed.
But I don't have either of these, and I don't want to buy them - I have an ipod nano. Is there any way to increase the playback speed on itunes (or any other hack) before syncing with my ipod?
Thanks

I am also looking for a way to do this on my first gen nano. I found a few ways to play on the PC or via re-encoding. Still looking for a more ideal solution.
1. Quicktime can let you speed up podcasts and even videos. Which somehow I cannot find on my new Quicktime 10.
2. VLC can speed up playback too.
3. Speedup and re-encode mp3 using free Audacity
4. Use a paid software Amazing Slow Downer
5. http://twelveblackcodemonkeys.com/2006/05/03/fastspokenword/
Message was edited by: Nelson Evangelista

Sanyo VPC-CG65 mp4 playback

Whenever I try to play my .mp4 files with Quicktime that were recorded using a Sanyo VPC-CG65 camcorder, the playback appears to be all block-like with many different rectangles muffling the video and making it unwatchable.
Yet, I am able to play the files on my MacBook laptop just fine.
Any help/suggestions?

Thank you. I knew about the $20 software from Apple for playing MPEG2. But it just makes sense to me that if my existing editing software made by Apple can play MPEG4, then there must be a reasonably priced camcorder that captures video as MPEG4 that can be edited by iMovie. It makes sense to me but maybe I'm wrong.
I know there is a $200+ Aiptek camcorder that should work with my computer. I wanted to buy a camcorder that was one of the cheaper models but not a complete piece of junk.
Maybe someone knows whether the guy is right or not about the Sanyo Xacti? I don't understand why I wouldn't be able to save the files to my PB and edit them with iMovie HD. But I don't want to go ahead and buy the Sanyo as the way to find out the answer to my question.
Ginny

Control MP4 playback using powershell

I have found that i can start a movie using ....
    $player = new-object -com WMPLAYER.OCX
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Things I would like to be able to do are....
- redirect the playback to a WiDi device ( Play to )
- Pause
- Play ( un-pause )
- Stop
Thanks
Tom

All good ideas.
I've tried the     $player.controls.pause()    no luck
$movie = $player.openplayer("c:\dir1\subdir\movie.mp4")
$movie | gm -membertype methods
came up with nothing.
The link
http://blogs.technet.com/b/jamesone/archive/2008/10/21/powershell-and-windows-media-player-part-1.aspx
and link
http://blogs.technet.com/b/jamesone/archive/2008/10/21/powershell-and-windows-media-player-part-2.aspx
was very interesting, and I actually ran all the functions included in these two pages. The Launch-Media at the end of Part 2 ( intended for video ) but the pause-media function did nothing.
For a little background what I am trying to do is to have a little web page, that can peruse a directory, allow the user to select a video file, and play it to a WiDi device ( play to ) using MiraCast on my HD TV. Then of course the web page would need the
ability to pause, resume or stop the video.
I appreciate  everyone's help !!!
Tom

Double speed of video playback

could you increase the speed of the video playback or a
simulation ! I know there is a component you can buy that gives the
user a progress bar type thing (like volume) to which they can
increase and even rewind at a speed upto x4 and anything inbetween.
I just wondered if that kind of thing could be incorporated into a
captivate swf or if anyone actually had a widget for it

I found this component :
http://www.flashloaded.com/flashcomponents/speedcontroller/
but will it work with captivate swfs with playbars ! or may i
cause conflict and so on - and i have no idea how i would
incorporate that into the swf, like how to position it and so
on.

Reverse Speed Causing Choppy Playback

I am using CC Premiere Pro 2014 and am getting choppy playback when I reverse the footage. The footage is slow and jumpy. The footage is mp4 shot at 24 fps. I have rendered the clip and still get the same results. Using a new souped up Mac and have cleared the cache so computer isn't the issue. Any way to fix this?

System spec:
Asus x58 P6-Delux
i7-950
12GB RAM(1600Mhz)
1 System drive 500GB
1 TB (RENDER+Project)
2X1TB Raid 0 (For Footage)
Nvidia GTX 570
OS win 7 64 bit (Professional)
PrPro CS5 (5.0.3)
Media Encoder 5.0.1.0
NO Extended Desktop (1 Display)
Project Setting : DV PAL (4:3 1.097PAR) 48Khz Lower Field First
Footage :20 Min DV PAL 4:3 1.097PAR 48khz Lower Field First
All Driver are update (cheked at the manufactor website)...

Flex 3 SDK and mp4 playback support ?

Hi,
Does flex 3.x sdk support playing mp4 files?
Looking at the documentation, Flex component videoDisplay only supports flvs.
thanks,
Sunil

A quick google search shows that flash player supports mp4 files.
http://blogs.zdnet.com/Stewart/?p=501
-Sunil
Sunil Patro
video chat: www.tokbox.com/sunil

1080/50p to mp4 playback issue

Original camera capture from JVC HM600 1080/50p H.264 converted to Apple Pro Res 422 and imported into FCP7. (iMac OSX 10.7.5) Movie exported as default MOV. MOV then converted to mp4 using Mpeg Streamclip.
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Conversion never been a problem before when using other camera formats such as 1080/50i or 1080/25.

I think this was the issue. I used MPEG Streamclip to compress to mp4 again but at 25fps this time - and now plays back ok.
Thanks for your help

Is there a way to adjust the speed of podcast playback in iOS 5?

In earlier versions of its, I could play podcasts at normal speed, half speeder double speed. As I listen to many podcasts, I enjoyed the ability to listen in the faster mode to save time. Now, after upgrading my iPad to iOS 5, it sounds like all audio podcasts are playing in only a slowed down mode with no control to adjust the speed that was found in earlier versions. I mean, I even have this control in my first generation iPod touch!
Am I missing something or was something left out of iOS 5?

From every thread that I have read about this - and there have been plenty of them - I have not seen a definitive answer on this. The feature seems to be missing from the iPad as bizarre as that may seem. I know that I cannot find it.

.mp4 playback on Apple TV

Just ripped a DVD from MediaFork to a .mp4 file. Will that play in AppleTV or do I have to export in Quicktime Pro to AppleTV? The .mp4 file will play in iTunes.

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Timestretch (speed up) mp4 playback to 1.5x or 2x

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