OpenHawk, I don't understand why you transcode your high quality material using a bitrate of 25mb for high quality. This bitrate is used on HDV records, but HDV is 1440x1080i resolution. If I use a 1920x1080i, I have a 33% more pixels. I think I will need a 33,25mb bitrate for this records. Original format is AVCHD 17mb. I need near double bitrate when I recode using an mpeg2 encoder.

If I get my clips at 1920x1080 50p, I have double frames per second. For this, I will need double bitrate (66,50 bitrate), but using last rule, if clips are recorded using AVCHD format whith a 28mb bitrate, I will need double bitrate to recode in mpeg2. In this case, a 56mb bitrate mpeg2 will be sufficent.

Is this right?

- Originals 1920x1080 50p/60p: 56mb on mpeg2 encoder (fron 28mb avchd)
- Originals 1920x1080 25p/30p/24p: 34mb on mpeg2 encoder (from 17mb avchd).
- Originals 1920x1080 50i / 60i: 34mb on mpeg2 encoder (from 17mb avchd).
- Originals 1440x1080 50i /60i: 24mb on mpeg2 encoder (from 12mb avchd).

@ Granjow: it makes sense to me.

New svn proxy commits are great, but would it be possible to have different ffmpeg proxy generating parameters for different project profiles and choice whether to use proxies on a project profile basis? As well as or rather than a single default one for all profiles?

I love the new proxy clips. This is a HUGE help to me. It still needs some tweeking, but I am loving the first step.
Thanks JBM!

I'd really suggest transcoding to a low-complexity, intraframe only, intermediate, codec instead. You can make it encode almost losslessly. See one of the first topics for more details.

Hey all, just giving the proxy editing a crack, looks great. Think I must be doing something wrong through, as I cannot get projects to render with original clips?!

Have added a load of AVCHD clips into a proxy enabled project, default proxy settings. Proxy clips are all rendered great in my home folder (original clips are stored on external drive).

So I dragged a clip on and added a couple of effects, then went to render. I left "Render using proxy clips" unchecked and chose to output to MPEG4 25000k 2 pass.

But, the clip I get is low quality, assuming the proxy clip is being used. I tried checking the "Render using proxy clips" box and rendering again. The resulting file is identical to the first, same size etc.

So, is there something I am doing wrong? Thanks for any help, very much looking forward to this feature, so much quicker than DNxHD conversion etc

Thanks

I've opened a bug report for that issue

http://www.kdenlive.org/mantis/view.php?id=2050


sunab.

ahh thankyou sunab, will keep an eye on that report then

Many thanks for that pml. So much clearer and still very smooth. Cheers.

I would like to add that this only works on new Projects as the encoding is built into the .kdenlive project file.

Being halfway through a project, I thought, what the heck and deleted all the proxies, edited the .kdenlive file with the new parameters and saved. Loaded Kdenlive with my Project and re-generated the proxies. All works great!

Please note, I did all this with a copy!

First of all, thanks for the proxy-opportunity.
Loving it with my AVCHD-camcorder.

I have two problems, one of them probably not proxy-related.
When I render to H.264 and the YT-render-profile the sound sounds mechanic, sort of robocop'ish.
I just tried this: http://ubuntuforums.org/showthread.php?t=786095
And had to reinstall kdenlive, though it didn't reinstall all of kdenlive as some was remebered and my settings were remembered on startup.

To the proxy-related question.
I'm used to use the crop-effect on my clips, to kind of zoom in to a part of the clip.
Now, when I do it in the proxy-clips it is difficult not to get a black line either in the top/bottom or the sides.
I guess it is because 'crop' crops pixels, and in the proxy-clip I have fewer pixels? (and therefor fewer chances of hitting a 1280x1920 compatible cropping)
Is there any way to do zoom in to a part of the original video in another way without using crop?

PS. To those of you out there with a powerfull computer I can recommend the proxy-settings made by pml a couple of post above.

First of all, thanks for the proxy-opportunity.
Loving it with my AVCHD-camcorder.

I have two problems, one of them probably not proxy-related.
When I render to H.264 and the YT-render-profile the sound sounds mechanic, sort of robocop'ish.
I just tried this: http://ubuntuforums.org/showthread.php?t=786095
And had to reinstall kdenlive, though it didn't reinstall all of kdenlive as some was remebered and my settings were remembered on startup.

To the proxy-related question.
I'm used to use the crop-effect on my clips, to kind of zoom in to a part of the clip.
Now, when I do it in the proxy-clips it is difficult not to get a black line either in the top/bottom or the sides.
I guess it is because 'crop' crops pixels, and in the proxy-clip I have fewer pixels? (and therefor fewer chances of hitting a 1280x1920 compatible cropping)
Is there any way to do zoom in to a part of the original video in another way without using crop?

PS. To those of you out there with a powerfull computer I can recommend the proxy-settings made by pml a couple of post above.

I'm having the same sort of issue encoding to h264, the sound is definitely tinged with a robotic 'edge' to it.

For proxies yes there are a number of places that proxies seem to take precedence, including histogram and waveform.

The proxy is only there to enable real time editing and playback. When not playing back really it would be better to see a full resolution frame to work on. And with regard to histogram / waveform it really should be with reference to the 'real' source frame not proxy.

But like you, I'm very pleased to have the proxy option at all and no doubt there will be further improvements depending on priorities and developers available.

i had also experineced the robotic edge to the sound and solved it by changing the project settings - kdenlive insisted i had 50p clips, but they were 25p

I'll have a look, but don't think there's any problem with framerate, 25P in 25P out.