MP4/MOV video - Video preview doesn't play, audio works

savethepoppers wrote on 5/23/2018, 9:37 AM

Hello!
I have a MP4 video that I converted from MKV. When I place the MP4 media in Vegas Pro 14, the video preview doesn't play and shows just a frame (usually a thumbnail) or is super laggy.
Audio still works fine.

I have I-7 6500, RX 480, and 16 gbs of RAM so I don't think it's my computer.

I would like the video preview to work properly.
Thank you!

Comments

xberk wrote on 5/23/2018, 9:44 AM

 

Post media info

https://www.vegascreativesoftware.info/us/forum/faq-how-to-post-mediainfo-and-vegas-pro-file-properties--104561/

Last changed by xberk on 5/23/2018, 9:44 AM, changed a total of 1 times.

Paul B .. PCI Express Video Card: EVGA VCX 10G-P5-3885-KL GeForce RTX 3080 XC3 ULTRA ,,  Intel Core i9-11900K Desktop Processor ,,  MSI Z590-A PRO Desktop Motherboard LGA-1200 ,, 64GB (2X32GB) XPG GAMMIX D45 DDR4 3200MHz 288-Pin SDRAM PC4-25600 Memory .. Seasonic Power Supply SSR-1000FX Focus Plus 1000W ,, Arctic Liquid Freezer II – 360MM .. Fractal Design case ,, Samsung Solid State Drive MZ-V8P1T0B/AM 980 PRO 1TB PCI Express 4 NVMe M.2 ,, Wundiws 10 .. Vegas Pro 19 Edit

savethepoppers wrote on 5/23/2018, 9:56 AM



 

Media Info:

General
Complete name                            : C:\Users\Steve\Desktop\Superhot\HOLY.mp4
Format                                   : MPEG-4
Format profile                           : Base Media
Codec ID                                 : isom (mp41/avc1)
File size                                : 8.21 GiB
Duration                                 : 2 h 11 min
Overall bit rate mode                    : Variable
Overall bit rate                         : 8 909 kb/s
Encoded date                             : UTC 2018-05-23 14:11:33
Tagged date                              : UTC 2018-05-23 14:11:33
Writing application                      : vlc 3.0.2 stream output
Comment                                  : QuickTime 6.0 or greater

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4.2
Format settings                          : CABAC / 4 Ref Frames
Format settings, CABAC                   : Yes
Format settings, RefFrames               : 4 frames
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 35 min 19 s
Bit rate                                 : 32.7 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 088 pixels
Original height                          : 1 080 pixels
Display aspect ratio                     : 16:9
Original display aspect ratio            : 16:9
Frame rate mode                          : Variable
Frame rate                               : 224.157 FPS
Minimum frame rate                       : 1.012 FPS
Maximum frame rate                       : 1 000.000 FPS
Original frame rate                      : 60.000 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.070
Stream size                              : 8.08 GiB (98%)
Writing library                          : x264 core 148 r2762 90a61ec
Encoding settings                        : cabac=1 / ref=1 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=2 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=12 / lookahead_threads=4 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=10 / rc=crf / mbtree=1 / crf=16.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Language                                 : English
Encoded date                             : UTC 2018-05-23 14:11:33
Tagged date                              : UTC 2018-05-23 14:11:33

Audio
ID                                       : 2
Format                                   : AAC
Format/Info                              : Advanced Audio Codec
Format profile                           : LC
Codec ID                                 : mp4a-40-2
Duration                                 : 2 h 11 min
Source duration                          : 2 h 11 min
Bit rate mode                            : Variable
Bit rate                                 : 128 kb/s
Maximum bit rate                         : 300 kb/s
Channel(s)                               : 2 channels
Channel positions                        : Front: L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 121 MiB (1%)
Source stream size                       : 121 MiB (1%)
Language                                 : English
Encoded date                             : UTC 2018-05-23 14:11:33
Tagged date                              : UTC 2018-05-23 14:11:33
 

Vegas Pro File Properties

General
  Name: HOLY.mp4
  Folder: C:\Users\Steve\Desktop\Superhot
  Type: AVC
  Size: 8.61 GB (8,814,793,761 bytes)
  Created: Wednesday, May 23, 2018, 9:07:17 PM
  Modified: Wednesday, May 23, 2018, 9:16:44 PM
  Accessed: Wednesday, May 23, 2018, 9:07:20 PM
  Attributes: Archive

Streams
  Video: 02:11:57.582, 223.764 fps progressive, 1920x1080x12, AVC
  Audio: 02:11:50.971, 48,000 Hz, Stereo, AAC

ACID information
  ACID chunk: no
  Stretch chunk: no
  Stretch list: no
  Stretch info2: no
  Beat markers: no
  Detected beats: no

Other metadata
  Regions/markers: no
  Command markers: no

Media manager
  Media tags: no

Plug-In
  Name: compoundplug.dll
  Folder: C:\Program Files\VEGAS\VEGAS Pro 14.0\FileIO Plug-Ins\compoundplug
  Format: AVC
  Version: Version 14.0 (Build 270) 64-bit
  Company: MAGIX Computer Products Intl. Co.

NickHope wrote on 5/23/2018, 10:31 AM

This may be the problem:

...
Frame rate mode                          : Variable
Frame rate                               : 224.157 FPS
Minimum frame rate                       : 1.012 FPS
Maximum frame rate                       : 1 000.000 FPS
Original frame rate                      : 60.000 FPS
...

What is the frame rate of the MKV file? Can you convert it to 60fps constant frame rate?

Musicvid wrote on 5/23/2018, 1:15 PM

Actually, the properties you posted have been sanitized and the data needed is missing.

Start by posting MediaInfo for the mkv file; that gives us a shot at finding out what codecs and parameters are inside that wrapper, whether it is a transport stream, previously encrypted, or whatever?

If we can't get those details, it may be necessary to deconstruct your mkv using MKVExtract to find out what's really in there.

In the case of a transport stream, it can then be rehabbed in VideoRedo, and muxed to a vegas-friendly program stream in a matter of minutes.

As wonderful as Handbrake is, its decoding engine cannot detect and repair transport stream errors, and encoding to AVC/mp4 does not do that either on it's own.