Correct audio compression for web playback.

I am making a webseries and I want to know what is the best audio compression for web playback.
I tried H.264, but the audio levels were much lower when I played it back outside of finalcut.
any advice?

this might help a little -
http://www.kenstone.net/fcphomepage/qt_movies_fromfcp.html
and
http://www.kenstone.net/fcphomepage/youtube_compressorgary.html

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Export Compression for Web Use

Hi All
I've been through the forum and seen a lot of posts on the "art" of compressing files for use and transfer on the web while wanting to maintain quality.
I understand that it requires some tweaking of the frame size, the frame rate, and the data rate to get the optimum file size versers quality.
I've moved from iMove where export was simple(tho files were large) to FCE and I'm finding that the learning curve is very steep.
I've recently seen a video on Vimeo http://vimeo.com/10022953 which is stunning quality and only 36.5 MB with a frame size of 1280 x 720. I'm wondering if anyone has an idea how he may have achieved this. The Codecs that he has used are AAC, H.264, MPEG-4 ODSM, MPEG-4 SDSM. I'm wondering if it may be necessary to use another compressing software to convert the exported full size QuickTime movie file to a quality file such as this.
Any ideas???

Hi All
While waiting for comments to my question I contacted the producer to the video that I referred to above. When in doubt go to the source.
His reply is…
"I use the setting in Quicktime X, go to: File - Save As and in format select 1080p. Easy as pie"
So I gave it a shot and I managed to get an awesome quality video at a greatly reduced file size, similar to what he had. I also discovered a powerful tool in Quicktime X : File > Save for web. This gives other great sizes and extra files and code for hosting on your own servers.
If anyone has any other ideas I'd love to hear but this has fixed me for the moment

Best Quicktime compression for DVD playback later on?

I have some DV footage that I had captured into MPEG-2 files on my old PC, then recently got a Mac and I want to be able to edit the footage on the Mac software I have and put it onto DVD for standard playback on a TV.
I've got the latest Quicktime Pro with the MPEG-2 playback component, and another program I just found called MPEG Streamline that allows me to convert the MPEG-2 files into MOV files that can be edited in iMovie and Final Cut Express, of which I have, and then I plan on just using iDVD to put the projects on DVD.
I've converted some footage using 3 different compressions: Apple DV 25, JPEG Motion A, and H.264 at NTSC 720x480 resolution so far, and cannot see any noticeable difference in the picture quality between the three converted files when played full screen with Quicktime, but of course, there is considerable difference between the resulting file size for each video. With all three files played back in Quicktime, there was some faint pixelation around moving figures in the video, even after setting the video stream to play back high quality.
I would like to know if there is and what the best compression to use would be in converting the MPEG-2 files into MOV files or other format that's compatible with iMovie and Final Cut Express that will result in the best quality for DVD playback. I don't have Final Cut Pro so I don't have Compressor, which I understand, has a preset compression optimized for DVD playback later on.

Nevermind, I just used DV compression and the playback quality came out just fine on the DVDs I've burned from the footage.

Compressing for web

I've never had a problem with compressor before, but now for some reason when I open a new batch it only gives me apple destinations or custom destinations. I usually have many other options. Does anyone have any idea how I can get the other destinations back or navigate around this? I just need to compress a 4 minute video for web. Thanks!

Change it in the size box of the Quicktime Export window.
W=(H/9)*16
Good luck,
CaptM

Can anyone help me with compressions for web streaming? So lost!

Hi there
I am so confused !
I have the task of getting HD footage from my camcorder ready for quality web-streaming on a website. The clips need to be in mp4 format using the H264 codec. As we are dealing with HD footage, I want the viewer to be very happy with the picture quality. I must admit that most of my compression settings were kind of guess work and I was only judging my results by the final file size in relation to the video quality. I was getting file sizes of about 16mb per minute of video/ audio footage.
I had been keeping my frame size at 1280x720 and my bit rates were about 2000-2500kbits/s. Bandwidth is a real concern as there will be alot of people streaming these videos and there might be over a hundred videos on offer at any one time. I found that bit rates any less than this were resulting in a poor picture quality.
I have since learnt that what I was doing is completely wrong!
I was told that my frame size was way too big for normal web-streaming of HD footage and also that my bit rate was too high and bandwidth hungry. I never knew that the bit rates I set when compressing my videos would have an effect on the bandwidth that would be used. I am obviously showing my ignorance!
If anyone has anytime to help out someone who has no idea, I would absolutely love to know the answers to these questions:
1. What is considered a good acceptable frame size to show HD quality footage? Maybe a size that if the quality is OK, they can also stretch the frame afterwards to fill their screen without losing too much quality?
2. I want to use mp4 with the H264 codec for streaming, what is an efficient bit rate to set the compression at, so that the quality looks nice, but wont drain my bandwidth unnecessarily?
3. Can anyone explain how the bit rates that I set for my compressions affect the way they are downloaded once they are on a website. Just cant get my head around this logic for some reason?
4. What other compression settings should I be aware of (eg. keyframes etc)
I feel so lost in all of this and would appreciate it tremendously if anyone can help me out.
Dan

If I select a bit rate of say 2500 to compress my videos at, what will that now mean for the end user? Will that mean that his connection will be forced to download that video at 2500kbp/s thus using alot more bandwidth?
Yes and no. If the end user has a connection that allows them to receive data at 2500 and the source from the web can supply data at that speed then they'll be able to stream in real time. However, if either end doesn't hold up (the client's connection can't receive data that fast or the source can't send it) then end users will be forced to watch it on delay - letting a good portion of the movie download first. QuickTime will do this anyway - if you (as I do) embed a movie into a webpage, when you visit that page QuickTime will calculate how fast data is being sent and received, and decide when to start the movie based on that calculation.
I was told that the bit rate I set when I compress these files locally on my machine, tell the streaming software how to allow users to download them - is that true or have I got all mixed up?
You keep saying streaming and I'm not sure exactly what you mean. Streaming can either mean having a finished file on the web that people can watch with minimal downloading in advance, or streaming can mean sending a live event out over the web. I think you mean the first. In that case, there is no streaming software on the server side - it's just a file that gets sent to a client just like any other file. The bitrate however does tell the client software, like QuickTime player when to start playing the movie (As I alluded to above).
If you really want to "stream" content - in other words allow people to go to page and start watching then I'm going to suggest you distribute in multiple formats. QuickTime has a number of presets you can use for "streaming", and these are usually small (320*240 or 640*480) videos that are under 1 Mbps (often less than 500 kbps). These files can normally be watched in real time by most clients.
The other catch with the route you're going is that some computers simply can't handle 720p content that is encoded in h.264 - they just don't have the power. If you look at podcasters many of them have chosen to go multiple formats in part for this reason - they have video embedded on their websites for watching in real time, small iPod formats for lower-power computers and iPods, and HD formats for platforms like the Apple TV that offer the best quality.

Changing default jpeg compression for Web Gallery files

I have created several web galleries from both Raw and Jpeg files with Iphoto '08 that suffer from serious jpeg compression artifacts. I haven't found any way to change the compression amount to reduce the artifacts. Is there actually a way?

papasteveo:
Welcome to the Apple Discussions. There is no way in iPhoto for the user to manage the jpg compression of the web gallery photos. If the option for visitors to download the photos is selected the copy that's uploaded is compressed approximately equivalent to an Photoshop quality setting of 8 or 9 out of 12. The pixel dimensions are the same as the original unless the max dimension in the original exceeds 3054. The the file is resized to 3054 max dimension.
If the gallery is just for viewing the image is resized to 800 x 600 with additional compression.
You could manually replace the file with one that you've prepared but it would be very tedious as each file has it's own folder and the file name is changed to web.jpg (viewing only) or large.jpg (download). You would have to rename each file to be uploaded to the new name and make sure it's placed in the correct folder.
Do you Twango?
TIP: For insurance against the iPhoto database corruption that many users have experienced I recommend making a backup copy of the Library6.iPhoto database file and keep it current. If problems crop up where iPhoto suddenly can't see any photos or thinks there are no photos in the library, replacing the working Library6.iPhoto file with the backup will often get the library back. By keeping it current I mean backup after each import and/or any serious editing or work on books, slideshows, calendars, cards, etc. That insures that if a problem pops up and you do need to replace the database file, you'll retain all those efforts. It doesn't take long to make the backup and it's good insurance.
I've created an Automator workflow application (requires Tiger), iPhoto dB File Backup, that will copy the selected Library6.iPhoto file from your iPhoto Library folder to the Pictures folder, replacing any previous version of it. It's compatible with iPhoto 08 libraries. iPhoto does not have to be closed to run the application, just idle. You can download it at Toad's Cellar. Be sure to read the Read Me pdf file.

Best compression for web?

If client's need a video (usually under 5min) for a website, what is the best compression setting for that coming out of FCP (usually 960x720)? I usually do h.264 680x480...

Heather B wrote:
I just found that my video on my client's video is good quality, but studders & hardly plays. I was wondering if it was something that I could do differently on my end... but yes, I think I'm giving it to them correctly. I'll look into it further from their end. Thanks.
Heather
Stuttering and difficultly playing are bandwidth issues. Your bitrate is too high for their limited playback capabilities. when your reduce the bitrate, you will reduce the image quality. This is why we tell newbies at this to ask what the playback limitations are for their client's servers.
bogiesan

Low quality QT movie when compressing for web

I am exporting HDV footage from FCP and trying to compress it for the web. However, have not found settings that give me similar quality to what you see on say the Apple Trailers. Any suggested settings to give a high quality compression?
Mark

Apple trailers are usually done by experts using H.264.It's not complicated but getting excellent compression is a dark art. You make uncomfortable tradeoffs by sacrificing one element, such as frame rate, for image size. This often requires carefully planning the trailer's content to take full advantage of the codec's abilities.
Start by investigating the codec in the manuals for FCP and searching Apple's site for more info on H.264. The results can be unexpectedly stunning. But you also must consider your audience's online accessibility to the clip. It can be very large.
bogiesan

What's best compression for Web sharing

I've been making several clips using H264 compression but due to "unpopular" format only few people can see it (basically only up to date Mac users). Since I want to share my clips with friends over the net I was wondering what is the best large diffusion format with a decent quality or what settings need to be used. With H264 is possible to make a 2 min. clip with exceptional quality with only 5GB.....any idea which other format can do the same?
Thx
tatoz

Hello Tatoz:
Have you read this?
b Getting Your Video Ready for the Web
http://www.danslagle.com/mac/iMovie/qt_plugins/3001.shtml
Sue

Video compression for web. H264 codec.

Hello to everyone!
I would be gratefull If someone can help me with some advice on the following matter:
Who can I compress a video which is shot with dslr camera, at 640x424p, 25fps, so that 20 seconds of video do not exceed 1mb.
The final video has to be 512pixels in height and 340 in width, good quality under 1mb.
I usually export this kind of web files using h264. For this job I modified the biterates so that the video does not exceed 1mb but all resulted in poor quality.
The satisfactory quality of the video is reached only after 4mbs(biterate/vbr pass2), in this case the filesize is over 5mb so again no good.
Please help?

And another thing I noticed in Premiere: I usually do a small edit of about 20 seconds from 3-4 clips. Well, this time I compressed the three clips before editing them in premiere. I used the h.264 encoder I talked about and it reduced my filesize to half for each of them(no visible quality loss). Now I imported the 3 files(reduced) in Premiere and the 20 seconds of editing still export as the same big size it was before encoding and reducing the clips. More interresting is that all three clips together have about a minute of footage and they get pretty close to the filesize that the 20 second export video has.
I did another experiment and imported one video file in Premiere and without modifing the content, i wanted to export it to see what happens with the filesize after entering and exporting with premiere. The export was bigger in filesize and lower in quality. One thing changed though: I imported a mov and exported an mp4. So how come my dslr camera exports such good quality videos with such small file size. Is mov better than mp4? If the software camera did such great job compressing the videos, why can't I find a computer software that does the same?
I appreciate your time!
Thank you!

Compressing for Web download

Trying to compress a 5 min HD 1080i movie out of FCP to download for the web - can't seem to get anything of decent quality smaller than 2+GBs file size. Target size is 1024 MB max. Have used Compressor H.264 and still results are to large. Quicktime conversion results in too large a file size as well. Streaming formats in Compressor are not usable... I must be missing something. Any suggestions?
Thanks
Jim

What spatial quality setting (Encoder - video settings - quality) are you using for you h264?
If is is set to 100% the 2 gb is probably right. Try compressing a few frames at 75% see if the quality is accessible and if it is do the whole thing, it should decrease in size much more than 25%. also, Does it have to remain at full HD. maybe re size to 720p?

Skateboard movie compression for web, HELP. please

hi,
can anyone help me here?
ok,here is the situation.
i want to get the best compression using h.264 (file size,quality etc) for a 6 min fast moving skateboard film with graphics and slow motion sequences.
i have compressor and quicktime pro too.
please give me some advice on whats best.
i would like the quality to be near the origianl final cut file.
would be great if someone could describe exact settings.
thanks

I would stick with David's suggestion. You're going to have to compromise size and quality. Any time you're dealing with web media you need to be sensitive to file size and download times. In order to accommodate an acceptable file size that caters to your market you'll have to compress the video which in turn will degrade quality. If your not happy with 800 kbps h.264 try again with a slightly higher or lower bit rate.

Best compression for web site

I would like to add a 2-3 minute segment of a longer movie to my web site. I use wordpress which only allows for a 2MB media clip to be uploaded. What compression in Compressor (or elsewhere) would give me such a small file? Or is there another route I can take...posting to you tube or vimeo or such?
Thanks in advance.

You'd be much better off hosting somewhere else and embedding a player into your wordpress page. Or find another web hosting solution.

Question on best audio quality for web

I am making a web series and I want the audio to be the best it can be, I have already tried to output it as an H.264 but the audio levels are very low and the levels are off.
Any tips??

Do you know how to use soundtrack pro? you can use it to set your maximum level to -1 db, and then when you export your file from FCP, you'll have great levels for the web.

Compressing for web site

Hi, I've got a sequence that is true 16:9 and I'm trying to compress it as a Quicktime file for a web site. When I play it back it is in 4:3. What can I do to change the settings and what would be a good dimention for a web page?

Change it in the size box of the Quicktime Export window.
W=(H/9)*16
Good luck,
CaptM

Correct audio compression for web playback.

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