Export to .m2t constant bit rate

I need to export out of FCP a film as an mpeg transport stream, file prefix .m2t i'm currently using compressor 3.0.5 but it will only give me variable bit rate for out put which is no good. Can anyone tell me if compressor 3.5 corrects this problem or if there is a third party piece of software that I could use ? I looked at lumiere hd but i'm not sure if they are still in business.
export setting are as follows.
1920 x 1080 progressive, at a constant bit rate of 15 or 20 mbps per sec.
Thanks in advance.

Thanks Wally, it may come to that. Today I bought the up grade hoping that this would solve the problem but no just the same if I want to compress a HD file, into a .m2t file it still greys out the CBR option. A friend who has a similar system and was working in FCP 6.0.3 was able to produce them but said it was a bit involved, gave me a copy of one of his saved settings. I opened it in compressor and in the inspector summary it read as you would hope. However when I clicked on the inspector tabs, it defaulted to VBR. ***! Don't really know what to think. What could be effecting the changing of settings in compressor in such a way. I checked the preferences but there was nothing there that stood out as being relevant .... I thought about doing a total clean install but it seems rather extreme and without guarantee of sorting it.

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ITunes & Constant Bit Rate

Hi. Okay this is my first time posting here. Up till now I've been decently satisfied with my iPhone. However right now I'm trying to import some songs from a CD that I own onto my computer and into my iTunes Library.
Okay so I watched the tutorial video. I did a little research online and I found the way to change the import settings.
I want a HIGH QUALITY music file in the .aac format at a CONSTANT BIT RATE.
Following me so far? With that in mind when it came to the 1st screen I selected "Custom" and I choose
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Sample Rate: 44.100 kHz
Channels: Auto
Within this window the option "Use Variable Bit Rate" was SELECTED.
I unchecked/deselected it because I want a CBR (Constant Bit Rate).
And then I hit "Okay" thinking that I had done everything correct and perfectly.
Then I was back at the Main Pain. I hit Import CD hoping it would use the custom settings. However when I went to the folder to my shock and surprise it was giving me music files with a varying bit rate.
Some files were 325. Others were 321 and a few 319. This is NOT what I wanted and not what I expected from iTunes. I tell it to not use VBR it should be doing CBR right?
So that's why I'm hear. What do I need to do to get this to WORK the way I want it to? Or should I just give up and use another program like Windows Media Player to rip my songs into .mp3? I'd rather use .aac since I hear it's better quality and it's the evolution of mp3.
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Message was edited by: TheLionOfAzzalle

It's still NOT working.
I've done exactly the way you suggested. I've also tried it with "use error correction" and it still doesn't give me what I want.
The only thing that sorta produces what I want is when I put it to mono and start the importing process the files all come out at the same bitrate.
However the highest bitrate I can get with that is 160. And that's not what I want.
I'm about to just give up. On top of iTunes being ridiculous slow on all Windows computers I now find that importing songs is a complete hassle.

Trying to make MPEG2 HD 422 Transport stream at constant bit rate

I am trying to make a Compressor Preset to make MPEG2 HD 422 Transport stream 1920x1080i with a Constant Bit Rate of 15 Mbps and Open GOP structure . but when I select MPEG transport stream I can't make it a Constant Bit Rate and the GOP structure is set to Closed and "Grayed Out"
I am making files for our Playout Server and this is the specs requested by the manufacturer.
Is there a way to make this setting or do I just need to go to Adobe Media Encoder?

K47MU-D wrote:
Is there a way to make this setting or do I just need to go to Adobe Media Encoder?
Media Encoder is a very good choice for what you need to do.
Other than bit rate, Compressor offers very little in the way of adjustments to their presets for program streams and transport stream.
Good luck.
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Thanks

50MB constant bitrate? I hope you meant 50 Mbps... hehe. Hmmm... 29 Mbps seems to be max, using Compressor.
To get a constant bit rate (CBR), choose One Pass CBR under the Quality tab in the Inspector.
I am not sure if Compressor can do I-Frame only, but it can give you an IP GOP structure. Setting the GOP Structure to IP, and the GOP Size to the lowest possible gives you the best possible quality, but also the largest file size.
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To make an MPEG-2 Program Stream, you need to use MPEG Streamclip (freeware).
Open the .m2v file in MPEG Streamclip (the audio should automaticly load with the video file if they have the same file name). Choose the file menu and choose Covnvert To MPEG Using MP2 Audio.

Constant bit rate MPEG2?

Hi,
I've been asked to supply a file in 1920x1080 MPEG2 constant bit rate format, but I can't seem to select CBR as an option if it's 1920x1080 MPEG2... does anyone have a solution?
Paul

Again, I can't quite figure it out. Here's what's happening on my screen:
I select Apple ProRes 422 as the target (and check that the output frame rate and size are the same 25fps, progressive, 1920x1080 as the source)
I go to the inspector window, and change file format to MPEG2, select Generic for stream usage, HD 1920x1080 for the video format... and can only One or Two Pass VBR. (Same result with HD DVD or BluRay as the stream usage settings; I can select CBR for non-HD formats.)
What am I missing?

Constant Bit Rate CBR for HD

Why is there no option for HD MPEG-2 streams with a constant bit rate (CBR)? This is standard across broadcast formats, so why no option? And why no answers to this question? It's been asked for some time here.

Why is there no option for HD MPEG-2 streams with a constant bit rate (CBR)? This is standard across broadcast formats, so why no option? And why no answers to this question? It's been asked for some time here.

Constant Bit Rate H264

Hi all.
Im converting a movie for real time streaming, but i have a problem because the data rate change. I want to keep the same bit rate in the movie for streaming, but i have not seen the Constant Bit Rate CBR option in my Quick Time Pro 7.02.
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Here are screenshots. I tried a couple of tests and seems that the bit rate it resets to is random. For instance, I just set the bit rate to 35 and clicked OK. Then I went back into the settings and set it to 25 and clicked OK. Then I started the compression and it had reset itself back to 35. Then I deleted the source file, re-imported it, used the same blu-ray preset, and changed it to CBR 23mb/s, but when I started the encode it had jumped to 25. I stopped it, went into the settings, changed it to 18 and clicked OK. Then I went back into the settings and it was back at 25. Here are some screenshots of what's going on, taken within a couple seconds of each other.

50 MB constant bit rate I Frame only MPEG-2 Program

'50 MB constant bit rate I Frame only MPEG-2 Program'
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It's for a commercial.
Niel

You're going to have a much easier time doing this in Compressor 3 than in 2, but what I'm assuming you're talking about here is a Program stream (multiplexed file) very similar to a transport stream.
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If you're using Compressor 2, create a custom MPEG-2 setting and in the extras tab of the Encoder Pane select the Multiplexed option. Note though, that you will only be able to take the bit rate up to 20Mbps and it will only create a transport stream.
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BG

H.264 .m2t high bit rate playback problem ...

I'm still coming up to speed on some of basic video concepts so bare with me.   I have a 9 minute 1280x720 video; 59.94; source came from a Contour+ bike helmet type camera that stores .mov/H.264; separate audio track from MP3 files.   I exported an .m2t file file using the H.264 Blu-ray format/preset.   Besides checking TS multiplexing, the only other items I changed from the default were Maximum Render Quality and VBR, 2 pass.   This file plays fine on my PC with Windows Media Player.
Next I went down the layman's road of thinking higher bit rate = more information per second = higher quality and slid the target bit rate all the way to the right to 35, which in turn adjusted the max bit rate to 35 as well.   VBR 2-pass, max render, etc. still applied.   When I go to play this .m2t file under WMP it chokes and jerks.
I just wanted to ensure this result is expected and not some issue with my hardware or software configuration or other underlying systemic issue. I was expecting this file to play just like the other one above.   Feedback?
I have a new PC that followed the VideoGuys DIY9 spec closely: i7 3930, 32GB, GTX670, WD Caviar Black RAID0, etc.
Thanks

WMP overall is a pretty unreliable media player IMO. The media players I tend to stick with are VLC,Splash Lite and KMplayer. In my experince sometimes with interlaced footage VLC doesn't play it back very well if it's a scene that has a lot of movement regardless of how you tweak it's deinterlace filters/options etc. So in those cases I use one of my other media players.
Basically what I'm saying is that no media player is perfect for every scenario although WMP is certainly my least favorite.

Constant Bit Rate or One Pass VBR?

I'm about to burn a 90 minute DVD and I don't know if I should use CBR or One Pass. The footage is old and has lots of noise. My bit rate equation (560/x) comes out to about 6.2. If I use One Pass VBR can I go higher on the max than 6.2? I know I'll need a little room for audio. I'm going to use an
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John

The footage is old and has lots of noise.
Then it might need a higher bitrate. . . Even though the noise is ugly, at a low bitrate it would get even uglier.
Noise has a lot of info , it's like (for lack of a better example) a shot of a tree with lots of leaves blowing around. Lots of information which needs a higher bitrate to do it justice.
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PowerMac G5 Dual 2GHz Mac OS X (10.4.3) DVD Studio Pro 4.02 + Windows XP

Constant Bit Rate / ATSC HD Formats / NOT AVAILABLE?

Compressor does not allow CBR as an available compression format for any HD formats- Only NTSC.
This has been a bit of a frustration for us, as a number of HD playout hardware manufacturers require CBR files types for their compressed media.
Does anyone know if Apple Pro Apps have any plans to support CBR for HD formats in the future...?
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good question... i've been trying to find out about creating a MPEG 422 CBR for XDCAM is it possible?

Short Answer for Bit Rates...

Greetings!
I am doing a second version of my 90-minute 4:3 SD MPEG-2/Dolby2 DVD.
This second version is only 50 minutes.
Can someone please help me with maxamizing my Bit Rates for 50 minutes?
I want as much video quality as recommended for newer home DVD players.
From FCP 5.04 (with all render files trashed), I Export> Compressor:
2 pass VBR
Average BR: 6.9
Max BR:8.1
Quality: Best
Should I go higher or lower?
Sound:
Dolby2: 224
Should I go higher or lower?
Any comment welcome.

Thanks.
I did the 50-minute MPEG2 at Constant Bit Rate (one pass), 7.0 and Best.
It turned out as good as I ever got from iDVD which is okay.
After hanumang's tip on the Compressor 2-pass VBR "BUG" --- I finally realized what was "wrong" with my 90-minute (2-pass VBR) DVD.
In fact, pixelation looked so goofy I ate all the time and completely redid the 90-minute MPEG2 at CBR 7.0 & Best and it looked as good as the 50-minute DVD.
+++
Not to be too negative, but my experience with Apple's "professional" MPEG-2 VBR encoder is very disappointing -- the version I paid a lot of money for is clearly sub standard and would have been an embarrasment to send out.
I read here that they have fixed it in a .1x (?), but that fire drill is more than a week away, no help now, (plus $50 that I mailed today).
+++
In any case, I've completed my 2-DVD project and would like to thank everyone who helped me.
g_ballard

Bit rate standards for Compressing video for Captivate

I have been trying to decide whether rto use constant bit rate or a variable bit rate when compressing my video to embed in Captivate.
I have been told by Connect support that a constant bit rate is better for deploying video in Presenter but I am wondering if anyone has information as whether that is also true for Captivate. We are using captive as a means to offer a series of video question and answer sequence for a client of ours, and I am interested in getting the best quality with the smoothest performance in a progressive download flv format
For a simple talking head I am tempted to use a variable bit rate but, I cannot find anything in the seaces I have made that talk about the spec or any pros an cons to that quetsion for Captivate.
Doee anyone have any expereince with that?

I have always used constant bitrate for videos imported into Captivate and that has worked fine. However, I never tried using variable bit rate so I don't know if it will work better or worse.
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Visit my Captivate blog with tips & tricks, tutorials and Widgets.

Too High Bit rate error no matter how much reduce it

After Exporting an HDV 1080i 16:9 3 sequences from FCP via
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I think - and see if you agree - that I exported using a compressor bit rate setting of 6.0 and max of 7.5 on the first 56 min sucessful sequence build/burn, and then thought I could go higher on the second export so goosed the max bit rate to 9.0 since there were occassional big bits of motion. So now on the other two sequences DVD SP won't adjust that previous compression rate, and instead I will have to sacrifice the audio quality (use Dolby only)
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Importing Problems. Bit Rate Variations

I've customised my CD importing bit rate to 192kbps. However, when importing songs they can be anything from 180-195kbps when stored. This started all of a sudden - I have 4000 songs at 192kbps. Any ideas?

I just noticed in that after updating to 7.6 that if you're attempting to import discs to AAC using VBR that it shows up as a constant bit rate now. It seems to be the flip problem that constant bit rate users had with 7.5. I'm kind of annoyed by this because I'd been importing my entire library (A thru S) using the VBR settings and now everything seems to be coming in flat when I start ripping. Or are they VBR and just showing as constant? Either way, I hope it gets fixed. I hate having 3/4 of my files showing VBR and the rest CBR.

Export to .m2t constant bit rate

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