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Weird problem (very weird) trying to rendering certain video into MP4.

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JF Baez
Weird problem (very weird) trying to rendering certain video into MP4.
on Apr 11, 2015 at 6:33:18 am

Greetings forum, I have spent almost my whole day trying to get a work-around with this problem, and my last thing I could do is post about it here, just to see if anyone has experienced this before.


Here I go:

I have two files, from a recording device called AVERMEDIA (is used to record gameplay from videogames consoles). The files can be edited in vegas without problems, I can edit and render like a walk in the park, no crash, smooth preview playback, etc.


just for the record, here is the mediainfo properties of those files:

File 1:
General
Complete name : E:\joel's files\040315-2143.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 459 MiB
Duration : 3mn 57s
Overall bit rate mode : Variable
Overall bit rate : 16.2 Mbps
Description : AverMedia_c285_001.000.030
Encoded date : UTC 1970-01-01 00:00:00
Tagged date : UTC 1970-01-01 00:00:00
Writing application : Lavf53.3.0
Comment : Quality_BEST

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L5.0
Format settings, CABAC : Yes
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=15
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 3mn 57s
Bit rate : 16.1 Mbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 59.940 fps
Minimum frame rate : 59.940 fps
Maximum frame rate : 60.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.291
Stream size : 456 MiB (99%)
Encoded date : UTC 1970-01-01 00:00:00
Tagged date : UTC 1970-01-01 00:00:00

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 3mn 57s
Bit rate mode : Variable
Bit rate : 128 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 3.63 MiB (1%)
Encoded date : UTC 1970-01-01 00:00:00
Tagged date : UTC 1970-01-01 00:00:00

____________________________________________________________________

File #2:

General
Complete name : E:\joel's files\080415-2223.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 892 MiB
Duration : 7mn 54s
Overall bit rate mode : Variable
Overall bit rate : 15.8 Mbps
Description : AverMedia_c285_001.000.030
Encoded date : UTC 1970-01-01 00:00:00
Tagged date : UTC 1970-01-01 00:00:00
Writing application : Lavf53.3.0
Comment : Quality_BEST

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L5.0
Format settings, CABAC : Yes
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=15
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 7mn 54s
Source duration : 7mn 54s
Bit rate : 15.6 Mbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 59.940 fps
Minimum frame rate : 59.944 fps
Maximum frame rate : 60.004 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.283
Stream size : 884 MiB (99%)
Source stream size : 884 MiB (99%)
Encoded date : UTC 1970-01-01 00:00:00
Tagged date : UTC 1970-01-01 00:00:00

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 7mn 54s
Bit rate mode : Variable
Bit rate : 128 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 7.24 MiB (1%)
Encoded date : UTC 1970-01-01 00:00:00
Tagged date : UTC 1970-01-01 00:00:00

___________________________________________________








Ok back to the problem, I used Twixtor to generate some slow motion clips, to mix them with the original files in my project, this is the twixtor's file details with mediainfo:







General
Complete name : E:\2015 drift epic video project\slowmo joel footage rdr.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 806 MiB
Duration : 6mn 46s
Overall bit rate mode : Variable
Overall bit rate : 16.6 Mbps
Encoded date : UTC 2015-04-10 16:06:58
Tagged date : UTC 2015-04-10 16:06:58

Video
ID : 2
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Format settings, GOP : M=3, N=15
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 6mn 46s
Bit rate mode : Variable
Bit rate : 16.4 Mbps
Maximum bit rate : 45.0 Mbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 59.940 fps
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.298
Stream size : 796 MiB (99%)
Language : English
Encoded date : UTC 2015-04-10 16:06:58
Tagged date : UTC 2015-04-10 16:06:58
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio
ID : 1
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 6mn 46s
Bit rate mode : Constant
Bit rate : 192 Kbps
Channel(s) : channel0
Channel(s)_Original : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 9.31 MiB (1%)
Language : English
Encoded date : UTC 2015-04-10 16:06:58
Tagged date : UTC 2015-04-10 16:06:58

_____________________________________________

Ok this is the scenario:

I completed the project, I just needed to render to finish and upload, but what happens? while rendering, the rendering process "stops"at 64%, just exactly where the twixtors clips starts in the timeline.

I just try several things, my output format is MP4 AVC (Audio: 192 Kbps, 48,000 Hz, 16 Bit, Stereo, AAC
Video: 59.940 fps, 1280x720 Progressive, YUV, 8 Mbps
Pixel Aspect Ratio: 1.000)

I try one pass, 2-pass, changing the bit rate, render using cpu only, usin gpu only, profile high, main,base, with no success. I restarted vegas, I restarted my computer, I used the project as a nested file, and the rendering stopped at the same spot (the counter continues to infinite)

changing the ram in video preview to 0, didnt work. I try with another format, using lagarith, and i used the sony mfx 422 profile to render, it worked too.


but this is the weirdest thing of all, when I took the rendered file (MFX) and send him to the time line to re-render into a delivery format (AVC MP4), the rendering just stops in the same spot on my original project.

With this, I really gave up, this is very weird, I tested my AVC MP4 rendering with an old saved project just to see if I messed the codec and it worked fine (using MTS files from a video camera), it rendered the whole project without problems...


So I am really confused now, because how is possible to have the same problem even with a rendered video in a new format (MFX 422), this really blew my mind.

If you want to see more technical data just ask (or screenshots), I am so curious now to see whats going on here. I can send

Thanks in advance.


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Graham Bernard
Re: Weird problem (very weird) trying to rendering certain video into MP4.
on Apr 11, 2015 at 8:24:44 am

[JF Baez] "So I am really confused now, because how is possible to have the same problem even with a rendered video in a new format (MFX 422), this really blew my mind."
I'm guessing you've matched your Project to the Media containing the ISOM CODEC - yes? And, as you say this edits and plays well in VP - yes? Then after you render and place back into the Timeline you get grief - yes? Well, here's me guessing - again - that your combination of your captured ISOM footage clashes with the rendered output to the extent you're finding.

My solution would be to pre-render to a Vegas-Friendly, Digital Intermediary and use that for editing. It would appear you can go so far and then when you re-introduce "other" renders back into VP it is choking.

I did a Google on: Codec ID : isom . Many many issues.

Grazie

Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge


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JF Baez
Re: Weird problem (very weird) trying to rendering certain video into MP4.
on Apr 11, 2015 at 6:17:47 pm

Ok, in the timeline i get no problems, everything plays smooth, and without crashs,just like a charm.

I want to try the pre-render option to see, im really curious now to see if there is a workaround or to know the problem, as i said, the clip that stops the rendering is the one i rendered with twixtor (from vp), this is curious because i rendered it in mp4 avc, never had a problem re-using files rendered with vegas.

I will try pre-rendering but i guess you are talking about shift+M, i wasnt sure this is different from the dinamic ram preview.

Im on this, i stopped yesterday because i had to sleep but i found audio out of sync, some red clips on the timeline ( i didnt know this) and i fixed them replacing the clips.


I will google the isom codec too, thanks for the feedback


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JF Baez
Re: Weird problem (very weird) trying to rendering certain video into MP4.
on Apr 12, 2015 at 1:16:11 pm

UPDATE:

OK after replacing all the files, deleting all the out of sync clips, and several hours trying to render, I found a work-around.

In fact, I did the pre-render (shift+M) and it was good, it pre-rendered the whole project flawless. But trying to render into MP4 AVC, the problem still appeared.

so I rendered it in sections, i always keep an eye where the rendering stopped so i could divide the whole thing in segments.

I was surprised that after rendering the problematic segment, another problematic segment appeared but as i said, i keep rendering the segments and at the end i just made a new project and put all the segments together there.

I think this problem was because the ISOM codec.

Thanks for the feedback i hope this to help someone with the same problem.


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