windows media player will play back a mpeg 1 file rendered in Vegas pro 8 but not if rendered in Vegas pro 11

[Gary Nargiz]

I agree, think its a problem related to the WMA codec installation:

Here is a list of steps in addition to the ones previously documented I have taken to try and isolate what may be causing the problem:

1) Uninstalled and reinstalled WMA 12
2) Tested the file on the same version release WMA on a different windows 7 computer
3) Tried rendering the MPEG 1 file without a audio stream to see if I might Isolate the render issue to the Video or Audio stream. If it played back properly without an audio stream it might indicate a file conflict with the sound card driver. Some sound cards, especially professional ones don’t always support very low bit audio streams like you often see in a MPEG 1 file.

Still to do>>> sent the file to a available replica build of the computer I am having trouble playing the file on.
>>> Install Vegas version 8 to see if the MPEG 1 file it renders can be played back on the same machine

BTW here is my new computers build specs which I have had this issue with:

ASUS P8Z77-V PRO LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
Intel Core i7-3770K Ivy Bridge 3.5GHz (3.9GHz Turbo) LGA 1155 77W Quad-Core Desktop Processor Intel HD Graphics 4000
CORSAIR Vengeance 32GB (4 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600
SeaSonic X Series X650 Gold ATX12V V2.3/EPS 12V V2.91 80 PLUS GOLD Certified Full Modular Active PFC Power Supply
ASUS HD7850-DC2-2GD5 Radeon HD 7850 2GB 256-bit GDDR5 PCI Express 3.0 x16 HDCP
OCZ Vertex 3 VTX3-25SAT3-240G 2.5″ 240GB SATA III MLC Internal Solid State Drive (SSD)
Seagate Momentus XT 500GB 7200 RPM 32MB Cache 2.5″ SATA 6.0Gb/s Solid State Hybrid Drive
Layla 8×8 pro audio interface
Windows 7 Professional 64 bit OS

[Gary Nargiz]

Just to add one final piece to this I installed Vegas 8 32 bit to the machine that has the issue with producing Windows Media Player playable MPEG 1 files in Vegas Pro 11 and those MPEG 1 files play fine which taken with all the other steps i have documented here leaves me to conclude that this is probably a bug or compatibility issue with Vegas Pro 11 or perhaps more specifically the 64 bit version and not Windows Media Player.

Thanks to all for your feed back!