[Peter Holt]

Thanks for the tip.

I haven’t seen that option in the SRT import menus in the Vegasaur I bought a couple of months ago.

[Peter Holt]

I have done both 1-pass and 2-pass on the same material and same render settings, and I recall that the 2-pass generates maybe 10% smaller files, but better quality.

I am not 100% sure if I changed the bitrate also; logically the file size should be purely according to bitrate, and *definitely* the output frame size (e.g. 1920×1080) does not affect the file size for a given bitrate.

Most of the time the difference is not visible but in some videos I could tell the difference in some details e.g. a moving camera shooting a piece of tarmac which has a huge amount of detail and totally maxes out the bitrate even at 100mbits/sec.

I now use 1-pass for intermediate renders and 2-pass for final ones, because anything helps to get inside the 5GB file size limit on Vimeo 😉

[Peter Holt]

That’s really funny! Yes, could well be that…

[Peter Holt]

I routinely see 1/10 of real time rendering speeds… The best I ever managed with any version (MSP11, 12, Pro 13) was 1/3 of real time and that was going 1080P to 720P 50FPS and no FX, just a render. That is with no GPU acceleration (never worked in MSP and crashes Pro 13) so just the CPU which is a 3GHz 6-core i7-970 (win7-64, GTX750). Currently I am running an intermediate render of a 7hr job which will run for 80-100hrs. This stuff just is very slow. I know a guy with Final Cut Pro (Mac OS) who says he renders at 1x real time, but then Apple tightly control the video hardware and he has a properly working coprocessor.

[Peter Holt]

At some point this morning, since the 32% progress bar point, the time left value has jumped up

https://peter-ftp.co.uk/screenshots/2016-09-26_124322.jpg

I still think it is too small. The elapsed time has also got reset.

This is a single pass render. 2-pass ones of small movies are indicated correctly, with the progress going from 0 to 100% but showing the movie twice in the preview.

[Peter Holt]

A 7hr movie, 1080P 50FPS, 50mbits/sec output bit rate, AVC. I am doing contrast, colour balance, NewblueFX lens correction, a bit of track motion (1.8 degrees of rotation because the camera wasn’t exactly straight) and hard-embedding subtitles (SRT import via Vegasaur, from a GPS track converted to SRT using a custom program) like you can see on this movie
https://vimeo.com/180135440

On the next stage of the project I will start fresh, import the rendered file (probably about 100GB) and cut most of it out and add text titles as required.

I have seen this effect before many times and reported it on some other Vegas forum (there must be at least 5 Vegas forums :)).

I can confirm, looking at the preview footage, that the progress bar is correct (at 32% as I write) and the elapsed time is also right. The time left is now showing 1hr 21 mins 🙂

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[Peter Holt]

OK, thank you all. Looks like the GTX750 is not going to be supported. I have disabled GPU acceleration throughout; Pro 13 doesn’t work otherwise.

[Peter Holt]

Different people have different requirements and preferred workflows. I use the Sony for aviation videos – some here
https://vimeo.com/user8026275/videos
with this one
https://vimeo.com/178217220
being the most complex I have attempted so far, with a GPS track converted into SRT subtitles, imported with Vegasaur, etc. To you guys this is trivial stuff 🙂 but I find the learning curve to be steep.
The Sony was chosen over the Go-Pro for
– much better aerodynamics (much smaller frontal area)
– stabilisation
– smaller angle of view – about 120 degrees – so much less distortion to deal with in the video editor (NewblueFX Lens Correction)
– better image quality, arguably, according to reviews of both
The complete thing is described here
https://www.euroga.org/forums/website/5534-sony-fdr-x1000v-good-for-flying-movies?page=3#post_107006
As you can see, I could in fact access the USB without opening the waterproof housing, had I included a waterproof connector between the housing and the battery pack…
I prefer WIFI transfer because it avoids opening the waterproof housing, and the fact that 100GB takes all night doesn’t matter. Others think this is crazy 🙂
Based on the general view here it is desirable to combine the 4GB chunks before Vegas and there are several tools, one of which is Sony’s Play Memories Home which I am not told doesn’t need the camera connected and can input files from the PC.
However on some projects like the last URL above where I am doing an intermediate render to get the GPS subtitles in, the 4GB breaks get removed anyway…

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[Peter Holt]

OK… there is some detail involved here.

The problem with having a split in the event on the timeline (apologies if I am using the wrong terminology; I never did a Vegas course and probably should) is that it breaks the speed-up method which involves horizontal compression. Only the piece of the event whose end is being dragged gets compressed. One has to do all pieces individually. Or render and re-import.

Regarding the velocity profile, I think I can see how it can be used. Uncheck Loop for each event, apply the VP, and render just the bit you need.

Regards the Sony FDR-1000V software, there is indeed a program called Playmemories Home which runs on a PC (or a windows laptop, etc) which will import from a USB-connected camera and apparently generate a single mp4 file even if the camera recorded in 4GB chunks onto its SD card. This means two things: the camera has to be USB-connected (which means removing it from its waterproof housing – not always desirable, because it “wastes” a silica gel moisture absorbing pad) and you need to carry a windows computer. Apart from the foregoing, there is WIFI but the only target devices for that are android and IOS. Sony bizzarely blocked the WIFI from being usable with a normal computer. And with Android and IOS you have storage space issues…

I don’t think there is a USB driver for the FDR-1000V which would make it visible in Vegas, but even if there was it would not avoid the two issues above, *plus* the computer would need to be running Vegas, and if you are travelling you will be using a windows tablet or a laptop, so you need to license two Vegas installations…

Anyway I have multiple options here. Probably the best is to investigate using Handbrake to merge the 4GB chunks with the minimum loss.

[Peter Holt]

John – if you can find software which losslessly merges the 4GB AVC chunks, that would be very interesting. I have not found anything from Sony.

I am pretty sure Handbrake can do it but working out how exactly to configure it for lossless conversion is nontrivial. One can get pretty close of course by selecting a silly output bit rate.