Problems with Blu Ray created from MPEG2 Files

[jkidding]

Hi,

I'm just getting started with Blu Ray authoring and burning and have a problem I can't fix. I'm taking HD video sent from my TIVO (using kmttg to stream to pc) and then using Video ReDo to cut commercials. A MPEG2 file is created that I want to author and simply burn to a Blu Ray disc without encoding again and losing picture quality. My problem is that some of the discs I've created will have very choppy video when played back on my Samsung player. I notice it in particular during fast moving scenes. I've tried Cyberlink Power Director 10, MulitAVCHD 4.1, and tsMuxer to author the discs from the same MPEG2 file and get the choppy video from each one. The strange thing is that the MPEG2 source file will play back without any choppiness using VLC player.

I believe that the issue is related to the bitrate, but don't know how to determine it for sure. About half of my TIVO to Blu Ray conversions have gone very smoothly without any reencoding and there is no choppy picture problem. It's a sporadic problem and that makes it more frustrating to try to determine the root cause. I use ImgBurn to burn discs at 4x and Optical Quantum 25GB discs. I have not had a problem with any burned disc not playing in my player.

My questions are:
1. What can I do to determine if there is a problem with the video before I start the authoring or burning process?
2. What is the best way to fix the video problem and maintain the best possible picture quality for the Blu Ray?
3. If it's a burning issue, what needs to be done to solve the problem?

[Baldrick]

Post the details from the mpeg2 file. Use mediainfo.

[addu]

I think the problem lies with videoredo. Try using the file directly and see that whether the same choppy scene is occurring.

[jkidding]

Thanks for your help.

Mediainfo:

General
Complete name : L:\TIVO\Singin in the Rain.mpg
Format : MPEG-PS
File size : 9.49 GiB
Duration : 1h 42mn
Overall bit rate mode : Variable
Overall bit rate : 13.3 Mbps

Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@High
Format settings, BVOP : Yes
Format settings, Matrix : Custom
Format settings, GOP : Variable
Duration : 1h 42mn
Bit rate mode : Variable
Bit rate : 12.6 Mbps
Maximum bit rate : 20.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.202
Stream size : 8.98 GiB (95%)

Audio
ID : 189 (0xBD)-128 (0x80)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Muxing mode : DVD-Video
Duration : 1h 42mn
Bit rate mode : Constant
Bit rate : 448 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 328 MiB (3%)

Text
ID : 224 (0xE0)-CC1
Format : EIA-608
Muxing mode : A/53 / DTVCC Transport
Muxing mode, more info : Muxed in Video #1
Bit rate mode : Constant
Stream size : 0.00 Byte (0%)