Compressing video

i've got video (AVCHD) that i edited in premiere and when i export it the file is huge. my 15 minute video is the same size as a 1 hour video i downloaded. I made my video have the same file type (.mov), codec (h.264), resolution, and frame rate as the 1 hour video. but its still a much large file. what am i missing here? do i need to get another program to compress the file more?

Ha! Don't sweat it--this compression stuff is some kind of dark art
The discrepancies that you might see in file size would likely be caused by using a VBR (variable bitrate) encoding method. With VBR, you set a target bitrate, a maximum bitrate, and then there is usually an "undershoot" percentage that keeps the variability from going too low. When you encode a larger dimension video using the same bitrate, then encoder is cranking up the available bits to the 9s in order to ensure some semblance of viewability and to preserve a few more details, but this necessarily causes the file size to increase. It can only go so high (due to maximum bitrate cap), but that would account for any discrepancies you might see in output file size while using the same bitrate.

Similar Messages

Compressed videos not playing in IPAD

Hi,
I am using flash professional cs6 .my project is depends upon Multimedia.mainly my Application for iPad.
I am using some videos which are in .flv . Those flv files are too large so that i compressed all videos and loaded into my application.After building application those compressed videos are playing fine in my application.
But after published my application into .ipa file. and installed in IPad.but videos are not playing.
Please if any faced this problem suggest me.
I have done In My application with Videos
1.Compressed all videos into .MP4
2.Runed my application and tested ,Status: All videos are playing good
3.Published my App into .ipa
4..ipa file installed in IPAD, Status: Videos are not visible
Advance Thanks
Narsi
Message was edited by: Ak Narsi

Please post the codec details of your videos. MP4 is a container that supports a variety of audio and video codecs. Chances are you may have used a codec iPad doesn't support.
All my MP4s for iPad are using good old MainConcept H.264 for video and AAC stereo for audio. All playback is fine. Are you using something like x264 or something non-H.264?

Options for compressing video in iPhoto

So after using iPhoto for several years now, I've got lots of HD video snippets (hefty MOV files) scattered all throughout my years of created iPhoto Events. I don't have any intention of using iMovie to drag all the pics and movies together and make a "produced" movie, but instead just want to be able to access the individual iPhoto events & albums from my AppleTV for viewing with family. The newest Home Sharing feature of iTunes allows me to do this.. watching all the pictures & videos within albums and events - a great new feature. Unfortunately though, the large HD files take for ever (5 mins +) to load to the AppleTV before playing, thus ruining the "home video" experience.
I've done some experimenting compressing a few video files into 1080i .mp4 format using Quicktime then reimporting them into iPhoto. Without an "import to event" feature, it takes a while to find the imported files, then merge them with the original Event. When streaming the revised iPhoto event with the newly compressed video content, the files loaded quickly (1 to 2 sec) and were of acceptable quality.
I'm pleased with the results of this experiment, however, at 15 mins of work per video it would take way too much time to do this manually for my entire library. There are no features of iPhoto I know of that can perform the compression task, thus requiring all the file moving back and forth. Does anyone have suggestions on how this task could otherwise be done in a simpler fasion or using an automated technique?
Thanks for the help,
Chris

Check out Automator. I'm no expert on this, but it seems like you can get the Videos (gather them in a Smart Album first) and encode them with QuickTime in a workflow. That's half the work done. That just leaves you with replacing them in iPhoto.
And you can do this in iMovie too. You don't have to edit, just import them (which you can do from the iPhoto Library inside the iMovie window, add them to a time line and encode them as you prefer. Then export.
Not sure there is any way around manually adding and replacing them in iPhoto after though.
Regards
TD

Creating a DVD menu, how do I compress videos?

I'm going to be creating a DVD menu on DVD studio pro for an assignment, but I don't know how to use Compressor. I was wondering if anyone can help me on how to compress videos (main menu, chapter selection menu, transition, etc) on Compressor before importing them to DVD studio pro? What format do I compress videos into (mpeg 2, mpeg 4. etc)?
Thanks.

Essentiallly: Create your menu in DVDSP. Bring your movie into Compressor as the source file. Select one of the DVD presets (90 minutes best quality is good). Submit for encodimg and then bring the output files into DVDSP.
Clearly, you need to know the fundamentals to do much of this…and learning those from these forums is not very practical The Apple Pro user manuals are very well done. Get acquaninted with them amd you'll be glad you did.
Good lluck.
Russ

Compressing video files via Java ?

Hi All,
Is there any well know API/library for compressing video files like (*.flv, *.mkv , *.avi ) etc via java.
Google just gave me a few but if some has used/recommend some that would be great.
thx

RainaV wrote:
Is there any well know API/library for compressing video files like (*.flv, *.mkv , *.avi ) etc via java.First off, there is a difference between a file format and a video compression. All of those things you listed above are file formats, and have nothing to do with compression...
Not sure if FLV files support multiple kinds of compression, but AVIs do. You can have anything from an uncompressed RGB-encoded AVI all the way to a DIV-X encoded AVI.
But to answer your actual question, no. Java is extraordinarily bad at video compression (because Java doesn't support any sort of hardware acceleration), so the best you're going to find in Java is a Java wrapper for some native encoding library... an example of such a thing would be JMF (which doesn't support FLV or MKV files) or FMJ (which I think supports damned near everything as it wraps around FFMPEG).

How to achieve small file size after editing compressed video?

I recieved a video in .wmv file format with a file size of 6 MB. In Premiere its info is
320 x 240 (1.0)
00;03;17;01, 30.00 fps
44100 Hz - Stereo
I want to remove a few parts from the video with simple cuts and make video file with an appropriate file size and format for playing on a web page.
I made a simple test by importing and placing the video in a sequence and without any editing exported the sequence to FLV|F4V format with the preset: F4V - Same as source(Flash 9.0r115 and higher). This created a new video with the same quality as the original but the file size went to about 40 MB which I think will make it much slower than the original 6 MB file when played back on a web page.
I tried things like reducing the frame rate to 10 fps and lowering the sound quality. This didn't affect noticably the quality but the file size was reduced only with about 5 MB to the total of 35MB which is still very big for a web video.
I'm aware that editing a highly compressed videos can't produce the same quality with the same size but I will greatly appreciate any tips for lowering the files size while retaining some usable quality in a case like this.

Since wmv is Microsoft's format, you might want to use their free editor
Added Link
http://www.microsoft.com/windows/windowsmedia/forpros/encoder/default.mspx

Compressing Video for DVD Burn Makes Text Look jagged

Hello,
I'm currently at the final steps of a lengthy video production project and am struggling to make the text elements of my finished video display correctly after compression prior to burning it to DVD.
I create and produce music for a living and don't have nearly as much experience with video editing. I'm a bit new to all of this and am using FCE 4.0.1 to create my video & Compressor and DVD Studio Pro 2 to compress and author video for DVD.
*My main issue is this:*
I'm using an imported still image as the title card for my film. It's a mixture of large plain Helvetica Neu font text with some additional stylized lettering created in Photoshop (which is why I'm not using FCE's built-in text generators for the title card). The typography isn't very wild and crazy, it's basically big bold letters and a few gentle curves. I exported the image (1200x600) from Photoshop as a .png and imported it into FCE.
When I export my finished video file (.png title card and all) out of FCE, I export it as a raw uncompressed Quicktime file:
Apple Intermediate Codec 1440x1080i
29.97 fps
Pixel Aspect Ratio: HD (1440x1080) (Anamorphic not checked).
Field Dominance: Upper (Odd).
(It displays in quicktime at 1920x1080 though.)
After initially exporting from FCE, the title card image and all the other text in my movie created from FCE's built-in text generators look fine. It's only after I compress the finished movie in DVD Studio Pro or Compressor that I get jagged looking edges on the curves of my letters, primarily the title card image (the text generated by FCE's generators holds up okay).
In compressor I'm using the "MPEG-2 6.2 Mbps 2-pass settings for DVD" preset and in DVD Studio Pro. Using '2 pass VBR', 'Best' motion tracking, 'best' and 'highest quality' on all the compression settings I can find. I'm encoding at a total rate of 6.5Mb/sec max and 6Mb/sec average. These are standards for compressing to DVD and since I'm preparing a master for reproduction, I've been told I shouldn't increase the data rate over this or I'll run into player compatibility issues down the line.
Any ideas on how I can make this text image last through the compression process and still look clean and crisp without having to increase the data rate of compression? I'm going to play with different file formats for now, but it that doesn't work I don't know where to go from there.
Thank you for any help insights you can provide.

I started with a variety of HD raw footage (most of it gathered on Canon 5D Mkii SLR Digital camera in the form of: H.624 1920x1080) but converted all my raw footage prior to editing into:
Apple Intermediate Codec 1440x1080i
29.97 fps
Pixel Aspect Ratio: HD (1440x1080) (Anamorphic not checked).
Field Dominance: Upper (Odd).
I edited everything in Final Cut Express 4.0.1 using the AVCHD Apple Intermediate Codec 1440x1080i60 at 29.97 fps sequence preset.
When I finished editing all my video I exported it as a raw uncompressed quicktime file which is also:
Apple Intermediate Codec 1440x1080i
29.97 fps
Pixel Aspect Ratio: HD (1440x1080) (Anamorphic not checked).
Field Dominance: Upper (Odd).
But when played in quicktime this finished video displays at 1920x1080, which I'm happy with. (I'm assuming this is the proper behavior of Apple Intermediate Codec? It seemed to take 1920x1080 footage, converted it to 1440x1080, and then spit it back out as 1920x1080 after the whole editing process.)
But seeing as how my issue is with an image file I'm creating in Photoshop and importing into my video sequence, I don't quite understand how the rest of my footage would really effect it. I've made sure to create the image using the same dimensions and pixel aspect ratio as my sequence frames by using one of the standard Photoshop screen templates (HD widescreen 1440x1080). I save my title card image as a non-interlaced .png file and import it into FCE.
When I place the imported image on the timeline, FCE doesn't resize it because it matches the frame dimensions of the sequence. When I view the image at 100% in FCE's viewer all of the image's lines, curves, and shapes display properly as they appear in my original photoshop file.
But for some reason FCE treats this imported .png image file as a 'rendered proxy.' So while it looks fine in FCE prior to rendering and exporting, when I export the video sequence containing this newly imported title card image, the resulting uncompressed quicktime file contains jagged horizontal lines across some of the characters in the title card image. It almost looks as if there's some interlacing issue going on.
However after much experimentation and trial and error I landed on a custom compression setting in Compressor that seemed to take care of this issue. I did as you recommended and selected a high quality 7.5 Mbps encoding preset (7.5 Mbps max/6.4 Mbps average), but noticed a 2 pass VBR rendered better results. What really seemed to do the trick was adding a deinterlace filter to the compression preset, and that miraculously seemed to eliminate the jagged lines in my title card image, restoring it to its original appearance (at least during my initial inspection in Compressor's preview mode).
After letting Compressor crank away, I looked at the finished compressed video in quicktime and the jagged interlaced-looking lines in my title card image have returned. Compressor's preview was somehow misguided.
Now my plan is to burn this compressed video to a DVD and view it on a TV to see if maybe these jagged lines in the final compressed version are only being caused by viewing on my computer's monitor. I'm hoping this is the case, otherwise I'm at a loss of what to do next.
If you need any more details please let me know. Otherwise I hope this is enough to give you a better idea of what issues I'm dealing with.
Thanks again for your insights.

Compressing video for n97 using MAC ONLY SOFTWARE

Hi, i have several videos that wont play on n97, plays fine on a ipod video. I beleive they are all h264 encoded.
I have access to the following apps to compress video.
Mpeg streamclip
Quicktime PRO
iSquint
Final Cut Pro
Compressor
ANyone have good settings to use - the max i can use for good quality?
Also, anyway to re-compress my h264 videos so that degradation is kept to a minimum?
I am a MAC* user with a Nokia n97 - oh dear
*Mac is short for Macintosh, a computer made by a company called Apple.

Resolution: nHD 640x360
Bitrate: 1.5 Mbps or 1 Mbps
Framerate: 29.97 or 25 or whatever the source is.
Codec: h264 AVC baseline profile
That's what I would use.
Any re-encoding you do will add degradation, why do you need to re-encode?
640K Should be enough for everybody
El_Loco Nokia Video Blog

Compressing video files

just need some advice on how to compress video files currently i have the full movie 'FACE OFF' on my memory card but the file size is massive is there any software i can use to compress the file? Preferably by 50% or more please advise thanks

Well,
hit the europe.nokia.com website.
Click support page,
choose any recent mobile phone.
Go to the FAQ department.
Type MPEG4 video encoding
or just video encoding, ther you should get an essay about how to encode videos with your estimacy.
Further problem, PM me.

I can't get the h264 compressed video frame buffer

hello everybody, i tried to develop video streaming App on iPhone 4. But i can't get the h264 compressed video frame buffer before streaming these frames to network. Could anybody please tell me how to do this, thanks!!!

Look to see if you still have A.Pack installed on your computer; it should be in the Applications folder on your boot drive. That's what was used for AC3 encoding prior to Compressor 3. In the meantime, you could lower the bit rate of the video in order to use the AIF audio file on your DVD.
-DH

Compress video that's already been compressed? Bad!!

Hi,
I'd be curious if anyone else out there had any experience with this - and perhaps could confirm or refute what I'm finding!
We shoot with an HVX200 in HD, ultimately exporting a self Contained QT movie from FCPro playing at 60mbs. That's a file size of about 30 gig/hour of finished product. And it looks GREAT even on a 50 inch HD TV.
Now we're saving sever hours each week of SC movies and I experimented a bit - and discovered if we compress that finished SC movie (60mbs) to half its size - to 30 mbs, we cannot discern any difference at all when viewing on a good 50 inch (about) monitor.
So why not compress our MASTERS to 30 mbs and save about 15 gig per hour of programing. Well . . . we CAN!
But I'm finding 2 problems that seem to arise - perhaps others out there will 'already know' this!
#1 - If in the future, the client might want a compressed version of the show, say for the web, or for his salespeople to use on their laptops - when we compress what is now "30 mps" master down to, say 5 mbs for Apple TV, or 1 mbs for the web or any 'second' compression - the quality is really degraded over doing it from the original master (60mbs).
I kinda expected this, but it was pretty bad when re-compressing from 30 mbs vs. from 60 mbs (the original size). Am I correct? That is IS noticeably deteriorated?
Also, it seems to take, like 5 times longer to compress from the 30mbs version, than if we did it from the original. Are our findings accurate?
Sooo . . . here are 2 more reasons (if anyone agrees with me) it's NOT a good idea to compress your original masters - even if you can't "see" any difference. Should the client call back 6 months later and want other compressed versions - and you've already compressed it to half it's original size (even though you can't see any difference) - you'll sure see it on subsequent compressions! And you'll sure WAIT longer for Compressor to do it. Do you experts out there basically agree with me here?
Thanks very much for your experience.
Larry

Video compression uses lossy technology. That means that information about the video is being thrown away during the compression process. A good encoding will compress the material such that the information being thrown away isn't really discernible to the human eye, but remember that information IS being thrown away. And once it is thrown away, you can never get it back.
The problem is when you take an already compressed video and compress it again. Information is being thrown away again, but this time there is less information to begin with. This time the loss in quality will be noticeable to the human eye. Think of photo copying a photo copy.
One of the biggest mistakes beginners make is to think of video DVDs as "archival".

Compressing Video files to be used in Studio Pro projects

I have a 2hr and 7min video I'm trying to burn to a DVD. It is too large for a single layer and I've been having trouble with burning dual layer discs. Has anyone had any success using Apple Compressor to compress video files that were just a little too large for a single layer disc? What format did you use. I've tried several already and have managed to shave off a few 100 MB but not quite enough. The project uncompressed takes up about 5.7GB in Studio Pro and obviously it needs to be down below 4.7GB. Thanks for any help.

Compressor has a few presets, to compress so that 90, 120, or 150 minutes of video will fit into a single layer disc. I think those are making the assumption that you use the Dolby 2.0 AC3 option as well as the MPEG-2 one. So, if you take your video through compressor and choose the 150 minute preset to make MPEG-2 and AC3, and take those two files into DVDSP, you should easily fit 2 hours and 7 minutes onto a single layer disc.
If you want to squeeze as much quality out of the space as you can, and you're troubled by ending up with a little bit of disc space because you chose the 150 minute preset, you can tweak the settings. To do that open the Presets window, expand the Apple folder and the best quality 120 minutes sub folder, and drag the MPEG-2 5.0Mbps 2-pass 4:3 entry down into the Custom folder. Go into the Custom folder in the Presets window and double-click on the copy of that preset you just made.
An inspector palette opens up. Click on the second of the icons and you'll see settings for the video compression. Click the Quality tab and in there you can tweak the figures. Changing the 5.0 average to 4.7 should be enough to make it just fit 127 minutes. Save those changes, and then when you add your video to the batch list, select your modified setting as the one to use when it compresses the video.

Do I need to compress video before importing into DVD SP?

Hello,
this is probably stupid question, but I would like to know, if I need to compress my video before I import it into DVD SP as an asset. It looks like everyone use Compressor before importing into DVD SP, (setting up number of passes, bit rates and so on), and then they do it again when setting up preferences in DVD SP. (setting 1 pass or 2passes, bit rate values)
So is not the video actually compressed twice? Once in Compressor and once in DVD SP?
And also, what video formats are actually OK to import into DVD SP? (QT, AVI, FCP movie, etc)
Does DVD SP take them all, or does it only have to be QT?
Thank you and I appologize for these novice questions.

Welcome to the Boards
Madagascar wrote:
So is not the video actually compressed twice? Once in Compressor and once in DVD SP?
And also, what video formats are actually OK to import into DVD SP? (QT, AVI, FCP movie, etc)
Does DVD SP take them all, or does it only have to be QT?
Thank you and I appologize for these novice questions.
m2v will not be recompressed when placed on tracks (though in some instances it may recompress on menus.) Ultimately it is better to compress outside of DVD SP for control of encodes (and making AC3 files) and also some formats may not be supported by importing into DVD SP directly.
Some information to take a look at
http://dvdstepbystep.com/faqs_3.php
http://dvdstepbystep.com/faqs_7.php
http://dvdstepbystep.com/qc.php
http://dvdstepbystep.com/fasttrackover.php (middle section discusses Compressor a bit more)

How to compress video files from 10.0.8?

I need to compress my videos to share them on Dropbox. In the share options, I only get the file to be reduced from 149 MB down to 95 MB. How can I reduce it more to better share it and use in teaching? (I need to embedd three short videos in a Power Point, now it takes about 20 minutes to upload it).
On different forums, it's described how you can export the files to Quick Time to reduce file size without changing the quality and some speak of using Compressor, however, I can't find any of this in iMovie 10.0.8.
Are there any app's you recommend using?
Appreciate all the help I can get :-)

Hi Vishu Thakur,
Welcome to the Apple Support Communities!
I understand you want to move videos from your computer to your iPad Air and are trying to use Home Sharing to move the files. The process of moving files from your computer to your iPad is called syncing and would use iTunes to actually move the files from iTunes to the iPad. The article attached explains the process.
iOS: How to transfer or sync content to your computer
http://support.apple.com/kb/HT1296
Have a great day,
Joe

How do i compress videos?

hello,
i have imovie 08 on my imac and the video's im creating are 300mbs (give or take)
how do i compress them so that they are smaller and it is faster to upload them to sites like Vimeo?

choose 'Export with Quicktime'
choose h264 as codec
if resulting file is still too big, reduce framerate to 15fps..

How Do I compress video?

I produce sports instructional videos. Trying to learn stuff to podcast. I had my video editor take parts of my videos and put together four 15-20 minutes videos for four separate podcasts. I was able to get the four complete videos in i-Movie. How do I compress the videos?
Thanks in Advance
Coach Marty
I

what I do for my podcast is to edit the Podcst in FCP down to 22mins in length,
export it out as a Quicktime .mov file, and then use Visual Hub to create my
iTunes compatible .mp4 file, which is what you need the files to be compressed to.

Compressing video

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