Does anyone have any idea?
Any help would be gratefully appreciated!
I have the same problem. I think it's my pc and the codec. What you should try is to upload your laggy version on youtube (or wherever you want to upload it) and see if it still lags, when you stream it from there. Or save it as a WMV or MPEG2.
Thanks for your input guys. I can see that it requires a pretty beefy computer to make AVCHD files.
However I still don't understand why its only happening when I insert a jpeg? When having the video on its on its no issue what so ever.
To encode a 5 minute file as 1080P25 H.264 it only takes me 5 minutes.
Any more thoughts as to why the JPEG is screwing it up and nothing else?
Thanks in advance
Thanks a lot! :-) I suggested it.
Any more thoughts as to why the JPEG is screwing it up and nothing else?
Without the JPEG and transitions, PrPro is playing the native file transfered from the camera. When you add the transition, PrPro must decode the video to process the transition and then encode it to play it back. This takes processor cycles.
I think one way to get around this is to razor the video so that the portion under the transition is as long as the transition. Then, only that short piece of video needs to go through the decode encode.
You may see this in the thin color bar that appears above the clips--if the bar turns red over the video when you place the transition--that's PrPro way of telling you it cant play back the video at real time speeds.
Couple of things that will help you.
The issue you seem to be having pertains to trying to fit a square peg into a round hole - ie you import/render framerates not compatible to the rates of your original recording. An easy way to make sure that you are editing and exporting at the correct framesize and framerate is to either create a new project and then ignore and click cancel on the sequence settings window. After that import your footage and create a new sequence by dragging a clip from a list in a project panel onto create a new item icon. A sequence created garanteed to be correct for the clip in question. If you will try to put video's with a different frame rate into the sequence after that it will produce a less than perfect result (altough doable if you'll use Use frame blending tick in your export media dialoge later)
Also, the settings you use to encode your h.264 are also important. If you choose something like 100Mbps in your bitrate settings in Export settings it might become choppy. For good HD quality Ifor final consumption) no need to go above 30Mbps. Also it is important that your export framerates and or filed order matches those of your sequence, which in turn matches the source file format.
Hope it helps.
Thanks guys. Let me have a look at what both of you have suggested in a couple of hours and I will report back.
By the way SFL46, what do you mean by razoring? How can I do this also?
You may ignore the razoring advice. The fact that you have a jpeg transitioning into the video has nothing to do with rendering. PPro is intellegent enough (unlike after effects, but there it is by design and for a reason) to only render those parts of the video that are needed.
I followed all your steps and again if I add the JPEG i get the stutter. I have exported the clip as h.264, correct frame rates and size. At default of 32mbps - maximum of 40.
It still stutters after the JPEG.
The thing i did notice is above the JPEG the line is red, but where the video is the line is yellow. Any other suggestions?
Thanks alot for your help thus far.
Quick question about the HdPro Footage footage, do you by any chance use a new GoPro Studio by Cineform to convert your clips?
I haven't used any software to convert the clips. All I have done is copied the clips from the SD card directly to my computer.
Ok. Let's follow the method of elimination than. Use Preview app on Mac (you are on a Mac, right?) to open the Jpeg in question and then chose Save as and save it as a Tiff or a TGA image file and try doing your sequence with the resulting tiff instead of jpeg.
Just so you know my money is stil on wrong field/wrongframe rate settings. But who knows, there are a few different things that call themeselves jpeg.
Also try reimporting the resulting video into premiere pro as a clip and try playing it inside the premiere pro. Also go to the Apple>System Preferences>Energy Saver and chose Better Performance (it will sign you out, so save your work) to see if the GPU is cauing issues.
hmmm very interesting.
Yes I have a mac.
So what I have done is saved the jpeg as a tiff and now exporting the footage as h.264 1080P25 PAL default bit rate of 32mbps to max 40. (as before)
I also followed your advice and did not select sequence, instead I dragged the footage over the new thingy and it codec was I-mpeg 25fps.
EDIT - IT DOESN"T WORK ANY BETTER WITH QUICKTIME. I SPOKE TOO SOON!
Should I try to export it differently maybe? I would still like to keep it HD 1080 - as its shot natively that way
sure, try as a quicktime mp4 at around 10000-15000Kbps
Also, one thing troubles me still. In your original post you say that your footage was recorded 1080 30p. So I am somewhat bothered that it is being recognized as 1080 25p
for some reason I thought it said 30fps when i went to information on the gopro file, however it doesn't. What it does say though that the codec used is 1920x1080P H.264.
I will try quicktime now and report back! THanks
Ok so I just tested exporting with the settings match sequence settings
Format - MPEG Preview
Video Codec - MPEG I-FRAME
Quality - 50
If I take off the "match sequence settings" I cant find the option of 'MPEG Preview'... This is what the file was imported as via dragging the footage on as per your first instructions.
Do you know how to make it, quality 100?
If I go to the properties of the file it says its a mpeg2 video dimesion 1920x1080.
This all works fine with no lag...
Ok, so now we know that what we were dealing with trully was a user error and I am sure that the part of it is you being new to PPro. The other part of it is general annoyance that one has to deal with, whenever complex output pipelines are involved. When you are using a professional application suh as PPro you are alowed a lot of flexibility. Unfortunately with this flexibility the possibility of error rockets skyhigh. This complexity is in no way helped by the fact that the output is handled by codecs from many different vendors all of which have different UIs and different ways they talk to the host app. QuickTime is terrible in this aspect as well. So you have to be very methodical.
Now that we know that there is really no bug with PPro concerning your issue, you may go ahead and chose any one of the codecs for output that are available and suitable. PPro even gives you presets. For example you can chose a Youtube preset as an option for H264 export. But you have to pay attention to the settings as it is very often so that even if you have correct settings in your Media Export window the framerate and the image dimensions might be different inside a codec settings that are accessible for some of them via the codec settings button, like in the picture below. You can see that even though settings are all matching inside the media export dialog they are not the same in the codec setting pop-up
At any rate look at the summary field and see that those settings match. Including both of them having the same field order (ie none as it is progressive footage in my example. Like below:
Anyway, as I said there are many things to go wrong. I feel that a lot of Operation Manual reading is in your future, meanwhile it will be better, perhaps, if you use iMovie which is pretty good for simple editing - the kind you seem to be doing - without to steep of a learning curve. I use it myself for some quick edits on the go.
Hope it helps. Good luck.
Thank you so much for your clear and concise response.
1 thing though. The actual goPro footage says it natively uses H.264 as the video codec under properties in MAC. However when I drag it to new item in PPro it shows it as a MPEG2 codec.. Is this a mistake in either MAC OS or PPro.
Thank you for all your help and in the end its working as MPEG2 so ill use that codec for this film.
Thank you again,
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Does it really? Or does it say MPEG i-frame only as a video preview? Or are you talking about a rendered clip? Because if you output with a checkmark that says use sequence settings with Mpeg i-frame only it will do MPEG2.
h264 is an mpeg4, hence the mp4 extension of the original file. MPEG i frame only is probably what Ppro uses as an intermediate codec for certain file formats.
I would not use sequence settings as an output and would just output to mp4, as it is more efficient and will be a smaller file size for the same quality (I found 20Mbps be more than enough even for clips with a lot of motion, and even lower for regular clips as far as the final output is concerned). Smaller size clips = less time to upload to the utubes or vimeos.
MPEG I-frame is used when I select "Match sequence settings".
when you say don't use mpeg i-frame and output to mp4. I assume that means using h.264 as the codec (*.mp4 extension)?
When I use this setting - the movie is laggy like beofore, however matching the sequence settings which include
Format: mpeg preview
Video Codec: MPEG I-Frame
Frame Rate: 25
This is works fine.
The output file extension in this case is .mpeg
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Alright. Cool. I am still puzzled about what might cause the choppiness at this point. I wonder that at the datarate you would encode the mp4 (32Mbps, 40 max) it might be just too much data for your hard drive to handle. As a test I have repeated your workflow (though with a 29.97fps footage) and it plays fine on my MacBook Pro 2009 Quad Duo. I do have a fater HDD though (7200rpm as opposed to the 5400 that come stock).
I have a 500gb XT which 7200 RPM drive.
So I have now resolved the problem thanks to your help. I am able to output to MP4 H.264 1080P 25FPS.
What I did was drop the bit rate down from 32 - 40 max to 20 - 25 max. As soon as I did this its all working fine. No jittering or lag on the film what so ever.. This is a H.264 MP4 file now. WOOHOO!!!!
The original files was 15mbps rate if I look at the properties.
My question now is - What happens if you use a higher bitrate than what actually the footage is recorded in, and can you do this?
Hmm. Still perplexing to me that you would have a playback lag. How many apps are running in the background? Bizarre.
There is really no pointr to output higher bitrate than originally recorded (unless you add a vudeo effect that increases the visual compexity of the footage like Add Grain).
PS. go ahead and give me a golden star
I don't have anything else open and I have 8gb of ram... About 5GB free at the time of playing.
My VLC player does go to about 110% usage with the 32mbps one. however I thought it might have something to do with the way the video is captured in the first place and it not liking me bumping the rate.
Glad its all working now though.
Yes you get golden stars!!!!!!!!!!!!!!!!!!!!!!!
PS. I tried playing that 32mbps one on many different computers including some work machines and all lag at exactly the same spots...