Exporting AVIs

I tried to post this SUnday nite, maybe I didn't push enough buttons...

I have the newest version of MPEGStreamClip, but when I try to export AVI of a QT file made in FCS, I get a file that the Finder shows as all white, and QTPro as all black... no audio no video.

I hate to seem dumb, which I am not, but this is the first time in years that anything has NOT worked with my stuff.

I want to create web streaming video files 512 x nnn, AVI/DIVX... or Flash. I luv MPEGStreamClip for other reasons, perhaps I am not using the right tool??

Thanks

Independent photographer, film maker and Producer. In the wonderful UK.

I just tried exporting an AVI in DivX codec from MPEG Streamclip and didn't have the problem you did. You're sure you have the DivX playback component on your computer? What are the settings you're using?


www.derekmok.com

Hi Derek - thanks...

MPEG Stream clip ...

Export to AVI...
Compression H.264
Quality 50%
Frame Size: 640x480
Zoom: 80% (I want my final to be 512xnnn)

The Exporter Preview looks great

Original QT file is 720x480, 130 MB
Finished file is 2.1 MB with no Dimensions info

I'm trying a second try Frame Size: 720x480 to match the original.

This time the Finder preview is white, and QTPro says it needs addl components!

But that is not good, for web viewers...

What about my alternate inquiry as to QT to Flash? Which app is doing the job on that these days??

Independent photographer, film maker and Producer. In the wonderful UK.

I downloaded the player from www.DIVX.com and the file is blank white in that as well.

In QTPro, it now plays as all black - no nag about needing more components.

Independent photographer, film maker and Producer. In the wonderful UK.

> Export to AVI...
> Compression H.264

I thought you wanted DivX? That's what I chose for the test.


www.derekmok.com

DIVX isn't an option... so I picked AVI . Not in main File > Exports... or Export Other Formats.

Independent photographer, film maker and Producer. In the wonderful UK.

AVI is the file type. Quicktime is another file type. H.264 and DIVX are codecs. You shouldn't be using h.264. You should be making an AVI with DIVX encoding.


So in MPEG Streamclip, choose File > Export to AVI ,and then next to 'compression' choose DIVX.

Sorry, I accidentally edited the wrong post before, which is why this addition came up in Nick's post.

After downloading the component from www.Divx.com , it now is an option in MPEG Stream Clip.

File > Export to AVI ...

DIVX is now a Compression menu option.

It made a 5.7 MB file which plays fine.

Independent photographer, film maker and Producer. In the wonderful UK.

Now I need to figure out how to get the 512 x nnn frame size output

Independent photographer, film maker and Producer. In the wonderful UK.

So a 720x480 AVI makes a 5.9 MB file...
while a 512x341 AVI makes a 6.1 MB file


hahahaha... so much for bandwidth conservation with smaller framesize!!

Independent photographer, film maker and Producer. In the wonderful UK.

> hahahaha... so much for bandwidth conservation with smaller framesize!!

In my experience using MPEG Streamclip and QuickTime Player for compression, the frame size option has nothing to do with final frame size. I'm pretty sure it's only the data rate that matters. If you made a 1000kbps file 640x480 pixels, it will spread the 1000kbps over a larger area; whereas a 1000kbps movie file at 320x240 will look smaller but sharper. In fact, in the tests I've conducted, it seemed to me and my producer that at a fixed data rate, a 320x240 file displayed as 640x480 looked a bit better than a file that was made at 640x480. We don't know if it's an illusion, but it was a fact that a larger frame size did not mean more data unless you also increased the data rate.

> Now I need to figure out how to get the 512 x nnn frame size output

512/640 = 0.8, so 0.8 x 480 = 384, therefore 640:480 = 512:384.


www.derekmok.com

>512/640 = 0.8, so 0.8 x 480 = 384, therefore 640:480 = 512:384.

Argh... math... use this instead, but make sure you convert in square pixels as you're encoding to a computer display.

[www.apple.com]

As Derek says, for frame size vs bitrate, the larger the frame size, the higher your bit rate needs to be to maintain the quality..



www.strypesinpost.com

I know it is early morning and most are on the job, but...

I would rather a 512 x nnn at a smaller filesize than the 720x480...

Therefore, should I reduce the datarate?

I'll try what I can in the interim...

Independent photographer, film maker and Producer. In the wonderful UK.

> 512:384

That was your frame size, and you can afford to go smaller. Can you set the bitrate? A lower bitrate results in smaller file sizes.



www.strypesinpost.com

I couldn't find a bitrate setting, but the quality slider I guess is the equivalent. I put it at 25%, and the tester said it looked great on his PC... as well as for me on my iMac20...

I still would like to try a .mov to Flash.

What is doing that the best these days?

Thanks!

- Nick

Independent photographer, film maker and Producer. In the wonderful UK.

I still would like to try a .mov to Flash.

What is doing that the best these days?

Thanks!

- Nick

I got it to work.. I downloaded and installed ffmpegX.

Then following the instructions on the ffmpegX website, I installed the binaries.

Then facing a huge folder of .avi files to convert, I found their Forum thru Help > ffmpegX Online Help and searched for "Batch Export".

All is well.