Posts by fifonik

Quote from rsmith02

Vegas shows the file as it is, so the preview is correct

Well, it depend on what do you mean correct.

Technically speaking you are right and it is correct as 235 is shown in preview not as pure white.

However, after rendering to mp4 235 will be shown as pure white. "Hello video levels".

So people sees in preview not what they will get after render and so many complains. I'm not complaining, I perfectly understand what is going on and why and I completely happy with it.

This is why I called it "wrong".

My only concern was a new voukoder's default option that will try to fix this.

I asked that if such option implemented in voukoder -- it should be off by default so voukoder behaves the same way as other VP's encoders.

P.S. Sure, I know about the new pixel format.

Vegas shows wrong preview. This is "known feature". There is a plugin exists that can be used to "fix" that. If preview is on separate monitor, everything can be configured to be displayed correctly.

So if you decide to add anything related to the "issue" in Voukoder, could you please do not make it "default"?

Thanks.

I'm not noticing any delays in VP17 with Voukoder, so not sure what OP is talking about.

It is possible that something changed in VP18 that I do not have and it was fixed.

In VP, when I select any profile and click Apply I see the option opencl=1 (with "Show advanced option" checkbox ticked).

Just curious, how can I remove/disable it?

Thanks.

P.S. In profiles created with earlier versions of connector do not have the option.

Any chance the -itsofffset option will be implemented one day?

I'm aware about another thread related to the issue and that you've already made it much better in version 0.7.1.

However, I'm forced to disable so4compoundplug in VP15-17 as it has issues with my 5.1 sources so I still have 1 frame audio shift

Thanks.

5.1 audio works in my tests now. MediaInfo 20.03 reported 6 channels as for source.

I've tested it in VP18 (Free Trial) as well and everything as it should be: 5.1 audio in rendered file.

Waiting build for earlier VP versions.

Thanks a lot and take care.

Could you advice, was the issue fixed in recent versions of connector?

Thanks.

UPDATE: NVM, I checked Vegas Connector version 1.0.0 and the issue is still there. Only Mono and Stereo available.

I wanted the feature to render without audio. I was using this for testing only.

If I need to choose what to have at the end -- 5.1 or ability to render video only, I'd choose 5.1 for sure.

I do not really understand what fix you are talking about.

I've experimented a bit and tried to fix the offset in mp4 rendered with connector 0.5.1 using itsoffset ffmpeg option:

ffmpeg.exe -i voukoder.mp4 -itsoffset 0.044 -i voukoder.mp4 -map 0:0 -map 1:1 -acodec copy -vcodec copy synced.mp4

ffprobe synced.mp4:

start_pts=1056
start_time=0.022000

However, the synced.mp4 file behaves in VP exactly like file rendered using connector 0.7.1: if so4 disabled (default in up to VP14) -- the audio stream shifted one frame behind comparing to when so4 is enabled (default in VP15+).

So looks like the VP's decoders decode audio streams differently depend on the start_time stream information.

I suspect that Happy Otter Scripts is also affected.

As a result, you cannot actually fix this using the offset and the only way to fix it properly for VP is to add silence at the beginning or trim audio.

In any case, current implementation looks better as audio shift is smaller.

I'm having the same issue with connectors 0.7.0, 0.7.1.

Quote from Hannibal_Lecter

In my view the audio rendered in voukoder is 1 frame AFTER the original audio, just see that the peak of the audio signal is on the right, when compared to the original audio. This happens in mine and in your screenshot.

Sure. But previously you said 'ahead', not 'after'. I said 'behind' == 'after'.

Yes, I also have the new so4 decoder disabled in internal preferences as it does not work correctly with my AC3 5.1 audio streams.

I'm confirming that when the so4 option is in default value (TRUE), the audio in mp4 file rendered with voukoder connector 0.7.1 is in sync with original audio.

When the option is in non-default value (FALSE), the audio in rendered mp4 file is 1 frame behind.

You do not need to re-render, just change the option, restart VP, put original an rendered on timeline & compare.

I've found my footage with Stereo (1080-59.940p, AC3 Stereo) and only see 1 frame offset after rendering (audio 1 frame behind original audio. I do not know why other member says it is ahead, based on his screen shot I'd say it is 1 frame behind).

Then I was able to correct it further using atrim filter (Start = 0.033, start in frames did nothing):

I do have the same issue with 5.1 audio: only 1 and 2 channels shown in audio config.

Rolled back to version 0.5.1: no audio config, but it rendered as per project settings.

Quote from Vouk

With FFmpeg AAC only STEREO mode seems to be affected.

In the topic I started (link above), I rendered to AAC 5.1 and it was also affected (source -- m2ts from camcorder with AC3 5.1).

While comparing, I removed all audio tracks from project but front channel only for simplicity (otherwise it would be 16 audio tracks in comparison project: source, wav, Sony AVC, Voukoder -- a bit too messy) . However, other channels are also affected.

I can upload project + source again if needed.

Hm, I thought it is already on the list as I reported the issue:

Vegas Pro: Audio Shift in rendered video

I wish it would be possible to specify params that are passed directly to ffmpeg.

I'd use the -itsofffset then.

As in the AMD table there are "Yes", "No" and blank values provided in "xyz Encoder" column, I believe blank value means "no information available".

That is sad.

The audio shift I currently have with my footage from Panasonic X920 does not allow me to do final renders using Voukoder.

Should I post the same in Feature Request forum or you can move this thread there?