New Info re: AVCHD transition "blips"

[Xyzzy2]

No success here with or without Smart Render. Actually made things a bit worse (multiple repetitions of frames, blips at the beginning of transition as well).

[Van Rouge]

Before I made Phil's changes I had downloaded the VS X3 trial. Perhaps this had placed updated versions of the H264VDec.dll files as my version was 4.2.0.7 dated modified on 17/12/2009.

[Van Rouge]

After 12 months of frustration I have at last produced an HD film with VS12 which is smooth and glitch free and plays with sound OK on my Sony Bluray player. My camera is a PanasonicSD9.
This is what I did:-
First downloaded and installed the free trial of VS 13, this overwrites permanently some of the rendering routines with updated files.
Copied my video .mts files direct from the SD card to my Hard disc.
Now using VS12 inserted the .mts video files into the timeline.
In the project preferences disable the proxy & rendering options. ( Thanks to Roberto)
Edit the film as normal.
When done select 'Share' and 'Create file'
Choose 'Custom' and select:-
MPEG 2
Pal or NTSC
frame rate
Frame resolution
Aspect ratio
VDR 1800
Audio Stereo 48000
Then render file to disc but cancel any Smart Render options.
When this is done restart VS and choose 'Share' 'Create Disc'
Author the disc with Menu etc. checking the bottom boxes select Upper Field first and ticking the 'do not render complient files' box
On the 'Burn' page untick the 'disc option' and select the create folders option.
Allow the folders to be written to a 'Disc Image' folder created earlier on the hard disc.
When this is finished check the size of the 'Disc Image' folder and if it is less than 4.7gb save the two files in it to a data DVD otherwise to a bluray disc.
A DVD made this way plays OK in my Sony Bluray player.
Now I am happy that I can at last use VS12 ( which I have used since version5) to edit my films and produce good HD discs.
Thanks to the tips found on this Forum.

[Ken Berry]

Frame resolution
Aspect ratio
VDR 1800

The problem is that you miss out the most important part, and provide rather information in what you *do* provide. What exactly is the 'frame resolution' you used? And I assume that 'VDR' is somehow a typographical error for VBR (variable bitrate). But a bitrate of 1800 is atrociously poor quality for any mpeg-2 -- which is what you say you are producing -- let alone one which plays in apparently high quality in a Blu-Ray player but on a 'DVD'...

But then again, did you mean to say your were converting your file to a HDV format (which is of course mpeg-2) but with a bitrate of 18 Mbps (18,000 kbps)??? If so, it would not be true HDV which uses a frame resolution of 1440 x 1080 and a constant bitrate (CBR) of 25 mbps...

So I am afraid I simply don't understand what you have done and claim as being effective...

[Van Rouge]

Thanks, my settings were
MPEG2
Frame resolution 1920x1080
Aspect ratio 16:9
F/s for NTSC 29.97
VBR 18000
Upper Field First

If I choose the VS Bluray settings option the resulting video played OK on Media Player but without sound and on the Bluray player the video and sound jerked every second or so.

I burn the BDMV and Certificate folders onto a data DVD and this is recognised by the Bluray player as an AVCHD disc and plays perfectly. For films of less than 4.6 Gb this is a lot cheaper than using Bluray discs.

Ray Morris

[Accolades]

Hi,

Hopefully this update due out soon will fix a few issues.

[barzok]

Hello,

I am using VS since version 8 and I today have X3. I also use a CANON HF100 HD camera.
Since a year or so, I experience many problems in the rendering of my videos : blips and freezes. I guess it is more or less related to this topic.
The solution I found is to encode the video in X3 in AVI/no compression in 1920x1080. This generates huge files (approx 10 GB per minute).
I then compress using a third party product (TMPEGENC XPRESS 4). The result quality is awesome. I use the embeded DivX codec in Full HD for a file size around 100 MB/minute.
I am disapointed to see X3 not able to take care of the compression of the video properly, but the workaround I found satisfies me completely.

Hope this helps.

[Myrtille]

Hello

I've starting editing AVCHD rushes with X2 (version 12.0.98.1 Pro) and I am experiencing the same transition blips as many of users.

I've seen plenty of posts about this problem but no clear solution.

1) is there a fix for X2 about those AVCHD transistion blips ?
2) does X3 has the same bug ?

Thank you in advance for your answers
Myrtille

[pvreditor]

The work-around I use is to render to WMV files, which usually works blip-free with both x2 and x3. I do occasionally see blips even with WMV files, but only occasionally. I gave up editing AVCHD-to-AVCHD because of the blips. I'd love to know if there is a fix, though.

Bob Kovacs
http://www.bobkovacs.com

[Ken Berry]

It doesn't appear to be present in X3, and some X2 users find that it disappears when they have installed the trial version of X3. That apparently must install some new common file which overwrites the one in X2.

[Kizzume]

It appears to be live and well in X3. And since AVCHD is the only format that doesn't degrade the resolution of the final product, it's an unfortunate blip at that.

[laidback]

It doesn't appear to be present in X3, and some X2 users find that it disappears when they have installed the trial version of X3. That apparently must install some new common file which overwrites the one in X2.

Yah, that seems is the case with me - As since trying X3 Trial - my AVCHD clips, now have 17 identical frames at the start, mind you before I never really had a problem..
And as such I have gone off using Video-Studio..

[geoffschultz]

I've been battling these transition blips for quite some time. What I noted was that it wasn't every clip that had the problems, so I sat down and spent a lot of time trying to figure out what was going on.

My AVCHD video is shot with a Sony HDR-SR11 at 1440x1080i.
I'm generating the output file by doing a Share/Create Video File/HDV/HDV 1080i for PC.
I'm running the latest version VideoStudio Prox X3 (13.6.2.21) on a Windows 7 machine with the latest updates installed.

I discovered that I only saw the blips when there were titles in the video. If I remove the titles, the blips disappear. It also changed depending upon where you trimmed the video. Changing the starting frame changed the type of blip. It also depended upon whether or not you trimmed the end of the clip.

I then started looking closely at the frames which were being displayed and discovered that the frame ordering wasn't sequential and depended upon the starting frame.
In the following I have 2 clip sequences, one with 100 frames and is numbered 0-99. The second clip is numbered 0a, 1a, etc. The correct sequence should be 0 1 2 3 4 ... 98 99 0a 1a 2a ... Here's what I got depending on the start frame:

Starting Frame / Sequence

0: 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 11 12 13 14 ... 98 99 99 99 99 0A 1a 2a ...
1: 0 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 11 12 13 14 ... 99 99 0A 99 0A 0a 1a 2a ...
2: 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 11 12 13 14 ... 98 99 98 99 99 99 0a 1a 2a ...
3: 1 0 1 2 3 4 5 ... 98 99 99 98 99 98 99 98 99 99 99 0a 1a ...

Now, if I trim the start of the 2nd clip in several frames I get

3: 1 0 1 2 3 4 5 ... 98 99 1a 0a 1a 2a ...

This is just a mess! Basically this is telling me that I have to trim every clip by at least 2 frames at the start and end of the the clip. Even then it's not quite right, but I can live with this a lot more than having these stutters/blips in my videos.

I was also dismayed by how often VS crashed while testing this. I don't understand the QC that this product is put through before it's released. I'm a retired software engineer, and I wouldn't want my name on this.

-- Geoff

P.S. How does one submit this to the Corel engineers?

[Ron P.]

Abail may happen upon your post, and forward the information. He's somehow employed by Corel. Other than that, you need to go to Corel's website, the Support page, and send them an email, or contact them by phone.

[Myrtille]

I did some further investigations on the blips that are produced when rendering AVHCD rushes. In my case, I've discovered several types of blips :

Type 1 which occurs almost 100% of the time :
- no transition effect applied, the 2 last frames of the AVHCD clips are duplicated i.e.assuming a clip with 50 frames, the rendered mpeg-2 video displays 47 48 49 50 49 50

Type 1bis which occurs from time to time :
- no transition effect applied, the last frames of the AVHCD clips are duplicated and one frame is doubled ; assuming a clip with 50 frames, the rendered mpeg-2 video displays 45 46 47 48 48 49 50 47 48 48 49 50.
I've noticed other variants such as 46 47 48 49 50 49

Type 2 occuring quite often
- a transition effect is applied, the 2 last frames of the AVHCD A clip at the end of the transition are duplicated i.e. assuming a 1s transition, the rendered frames are 22 23 24 23 24 25 26 27...the rest of the clip is ok.

Type 3 less frequent
- the clip B starts with a transition effect with the previous clip A, at the end of the transition, 2 frames of the B clip B are doubled ; assuming a 1s transition, the rendered video displays 22 23 24 23 24 25 26 27.

There is clearly a random aspect is the occurence of the blips but the problem DOES exist and must be corrected by Corel. I don't trust any workaround such as triming some frames at the end or at the beginning of of clip.
I've opened the incident number 101129-000213 in the Corel support organisation.
Every one bothered by this blips /glitch problem should open an incident and document it to focus the software engineers on the right solution.

To be continued.....