Quote: If I play this file with a media player, even that is out of sync so something happens in the conversion.

I've never tried playing the m2ts files converted with PD 12 with a player, but I can edit and convert files in PD 12 from various sources without sync problems; that is, except for 720p 60fps files, as I've recently learned. But I've never had these kinds of problems with 1080p clips from my Canon Vixia HF G10 camcorder, 1080p files from various HDTV broadcasts or 720 x 480 30fps files from METV or various other broadcasters. There's apparently something about the 720p 60fps broadcasts that causes this (probably a feature not a bug). Dell Precision 7510 Laptop
Windows 7 Pro 64-bit | Intel(R) XEON(R) CPU E3-1505M v5 @2.80 GHz
RAM: 32 GB
Windows Experience Index 7.5

Thanks for the answer(s) concerning WTV and DVR-MS everyone. I don't really use my PC for home entertainment so-to-speak, so I guess that's why I've never heard of these formats.

Russell1967 System specs: Windows 7 Professional x64; Gigabyte Z77-DS3H motherboard with i5-3579K 3.8Ghz processor with 32GB RAM; Zotac GTX 760 w/4GB; 1xWestern Digital 1TB 10,000RPM HD; 1x Samsung 840 Pro SSD System Drive

Just tried Handbrake again. They have made lots of changes since last time I checked it out. It now only outputs to Mp4/MKV and will read WTV files. Converted the WTV to MP4 with Handbrake. Then imported that file into PD12 to remove ads. Video/audio is in sync with the 720p60 files. Editing is still slow, but stays in sync now.

A lot of work just to watch it in another room. LOL Guess I should check into a Windows Media Extender. Intel i7 4770k, 16GB, GTX1060 3GB, Two 240GB SSD, 4TB HD, Sony HDR-TD20V 3D camcorder, Sony SLT-A65VK for still images, Windows 10 Pro, 64bit
Gary Russell -- TN USA

Quote: Just tried Handbrake again. They have made lots of changes since last time I checked it out. It now only outputs to Mp4/MKV and will read WTV files. Converted the WTV to MP4 with Handbrake. Then imported that file into PD12 to remove ads. Video/audio is in sync with the 720p60 files. Editing is still slow, but stays in sync now.

A lot of work just to watch it in another room. LOL Guess I should check into a Windows Media Extender.

Tried a 1280x720 59.94 fps file from Fox in Handbrake and it didn't work for me... audio still out of sync. Then imported the file into my previous video editor (We'll call it "Brand N") and converted it to .mpg at 1280x720 but changed the framerate to 29.97 fps and it came out perfectly in sync. Then imported the .mpg into PD 12 and rendered the last 5 minutes of it as an MP4 at 720x480 29.97 and it was still in sync. I was hoping to be able to remove the old program from my hard drive but guess I'll have to keep it for awhile in case I come up against this in future.

BTW, what is your Windows Experience Index? (Control Panel, System, see the number in the middle of the page, if it works like Win 7) Click the link next to the number to see the ratings of your key components. One of those components might be slowing you down.
EDIT: Looked at my Handbrake settings and saw that "Variable Framerate" was ticked. Changed it to "Constant Framerate" and rendered again, and this time the video/audio was in sync when played in a player. Checked it with MediaInfo and for some reason it had rendered at an oddball framerate of 52.417. Imported the resulting file into PD12 and set the PD12 framerate to 60 (Got the Timeline Framerate Conflict warning but ignored it), cut out large portions of the file and rendered it at 1280 x 720 at 59.94 and surprisingly the resulting file was in sync when played in a player. If it had not been I would have rendered it at 50 fps. So it looks like Handbrake is indeed a good alternative to pre-render this type of file when needed unless and until Cyberlink addresses this problem. Dell Precision 7510 Laptop
Windows 7 Pro 64-bit | Intel(R) XEON(R) CPU E3-1505M v5 @2.80 GHz
RAM: 32 GB
Windows Experience Index 7.5

That is very interesting GGRussell. I will have to try handbrake on those 720p60 dvr-ms files from ABC and Fox. Most major TV network use 6 channel sound for their feature programming over the air. I use a 5.1 surround sound audio system for TV, BD, and MC. You lose the 6 channel audio and only get stereo after the handbrake conversion from what I remember. I have to use different methods to retain audio sync. I might opt to just go with stereo and save myself a lot of time using Handbrake.

Note: NBC and CBS use 1080i and I can edit and then create a BD with two 2 hour shows with commercials edited out to be 3 hrs. Editing is fast and responsive with menus. It takes less than 1 hour to create and finish burning a BD using srvt. Audio is in perfect sync.

Will have to try handbrake again on those 720p60 ones. I hear only a small difference in DD5.1 and stereo most of the time anyway. This will save me a lot of time and work for forgoing the 6 channel audio. Editing is extremely slow and not very responsive the way I do it to keep audio sync.

This is a good forum to learn from others and see other viewpoints.

Quote: BTW, what is your Windows Experience Index?

Don't remember if that was in Win 8, but in Win 8.1, the Windows Experience has been removed. Intel i7 4770k, 16GB, GTX1060 3GB, Two 240GB SSD, 4TB HD, Sony HDR-TD20V 3D camcorder, Sony SLT-A65VK for still images, Windows 10 Pro, 64bit
Gary Russell -- TN USA

Quote: Don't remember if that was in Win 8, but in Win 8.1, the Windows Experience has been removed.

Too bad. I used it in Win 7 to replace a couple of components, improving my performance considerably. As pointed out by a previous poster, your Intel 4600 is Benchmarked at 620 here:
http://videocardbenchmark.net/video_lookup.php?gpu=Intel+HD+4600&id=2451
The AMD Radeon HD 7870 you said you planned to install is Benchmarked at 4250, which is a very big difference and can't help but provide a significant improvement in your PD 12 performance as well as in other areas:
http://www.videocardbenchmark.net/video_lookup.php?gpu=Radeon+HD+7870&id=324
It actually scores a little higher than my GE Force GTX 660, which scores 7.9 on the Index, which is the highest score possible.
If I were you I'd install it. Dell Precision 7510 Laptop
Windows 7 Pro 64-bit | Intel(R) XEON(R) CPU E3-1505M v5 @2.80 GHz
RAM: 32 GB
Windows Experience Index 7.5

I wonder if those benchmarks were optimized for the HD4600 or not. AVX, AVX2 and Quicksync are very important with PD12 when video rendering. Hope to get multi-GPGPU working if possible.

I had the HD7870 installed in my older Phenom machine for about a month. PD11/12 did use it, but never more than 25% according to AMD system monitor. Unfortunately, I don't have an app like that for the Intel mobo, but Suppose I can use GPU-Z which show GPU load.

I will eventually install the HD7870, but still have more testing on the USB3. Apparently, there is a known issue with Intel USB3 ports disconnecting randomly. Intel i7 4770k, 16GB, GTX1060 3GB, Two 240GB SSD, 4TB HD, Sony HDR-TD20V 3D camcorder, Sony SLT-A65VK for still images, Windows 10 Pro, 64bit
Gary Russell -- TN USA