MYCOMETG3  Hmm... I understand what you see, but I can not find any cause.

- Is it able to upload source data (not exported but source data)?

- what version of imovie are you using?

mov file is desirable. I don't know iMovie is capable of exporting movie without transcode though...   
(Version 1.1.7)

MYCOMETG3  Your samples are :

- apple h.264 has nclc 616 in mov.

- x264 sample does not have nclc atom.

Upload x264 with nclc 616 please.  
(Version 1.1.7)

MYCOMETG3  PLEASE READ README.rtf FIRST.

I get over 1000 spam mails a week. I had NEVER put my mail address on my site though!  
(Version 1.1.7)

MYCOMETG3  I did some simple test using DV-NTSC.mov source file under both 10.5.8 and 10.6.2.

I used QuickTime Player 7. I can not reproduce your issue.

If you could, please upload short clip(~3 sec) and let me know via mail.  
(Version 1.1.7)

MYCOMETG3  Try nclc under settings window-extra options tab.

If you are in Europe and SD source(=PAL), would be nclc 516.

If you are in America and SD source(=NTSC), would be nclc 616.

If you are handling HD source, would be nclc 111.

Under Standard Video Compression Settings dialog, Preview image is not correct. Test by exact output.  
(Version 1.1.7)

MYCOMETG3  First, I don't have Apple Compressor 3.5. I can not debug on it.

Second, Episode Desktop Version 5.2.1 (23234_20090703) does NOT support "Frame reordering" capability (My component's requirement).

Download Episode 5.2 beta from Telestream download page. I have tested using Beta Version as 5.2.1 (23243_20090706). Free Demo mode is enough to test.

1. Launch Episode Desktop 5.2.beta.

2. File-NewSetting...

3. At Output Tab: Video : Choose QuickTime

4. At Video Tab: QuickTime : Click QuickTime Movie Settings...

- Choose Compression Type : x264Encoder

- Set Limit data rate to : 1000 KBytes/sec for ex. (Multi Pass is recommended)

- Or Uncheck Limit data rate for CRF mode (Single Pass only)

- Check Frame reordering for B-Frame support

- Set Prefered Quality. Medium is enough for casual encoding.

- Click Options... and make settings as you like

5. File-Save... and name your prefered setting

Use this setting for Batch job export.   
(Version 1.1.4)

MYCOMETG3  Please Read document.

Workaround for MPEG Streamclip issue is also included.  
(Version 0.8)

MYCOMETG3  I have confirmed Toast 8.0.3 now compatible with mp4vDecoder.

And, avc1Decoder also does not have any issue with Toast 8.0.3. Please Update if you can.  
(Version 0.7r2)

MYCOMETG3  I have confirmed Toast 8.0.3 now runs properly with mp4vDecoder. Obviously, it was NOT mp4vDecoder issue.  
(Version 0.7r2)

MYCOMETG3  Please check README-Tips.rtf (included document)

* Quality slider corresponds to ffmpeg -qmin. Center is QP=24, Best is QP=14, Least is QP=34.

* On Constant Rate Factor-CRF Mode, the slider corresponds to ffmpeg -crf. Center is crf=24, Best is crf =14, Least is crf =34.

I guess these range are enough for common use. Additionally, qmax is always 51 (same as x264 default).

//

* By default, partitions are I4x4, I8x8, P8x8, B8x8. (Same as x264 default)

Also you can check partp4x4, which means ALL partitions type.  
(Version 0.7r2)

MYCOMETG3  avc1Decoder may decode AVCHD movies, but I am not sure if it works on every file.  
(Version 0.7r2)

MYCOMETG3  No need to remove others.  
(Version 0.7r2)

MYCOMETG3  Either will do.  
(Version 0.7r2)

MYCOMETG3  avc1Decoder 0.6.7 is safe.

Some apps like Toast and mp4vDecoder has some compatibility issue same as Perian 1.0.  
(Version 0.6.7)

MYCOMETG3  Try remove DivXdecoder.component, and check if it helps.  
(Version 0.6.7)

MYCOMETG3  avc1Decoder runs on H.264 media only under mov and mp4 file. It also has postprocessing filter and color adjustment feature.

Perian runs many media type, but does not have postprocessing filter nor color adjustment.

You can install both.  
(Version 0.6.6)

MYCOMETG3  MPEG-4 AVC does not include MPEG-4 ASP/SP.

AVC is called as "H.264". ASP or SP are generally called as "MPEG-4".

avc1Decoder just handles H.264 media only.

mp4vDecoder handles ASP/SP media only.  
(Version 0.6.6)

MYCOMETG3  I have tried a few HD trailers. Everything works fine.

Would you please tell me that URL?  
(Version 0.6.5)

MYCOMETG3  Hi, would you please show me the URL?

I have tried at , and they are all available under avc1Decoder.  
(Version 0.6.5)