Reducing the frame rate of M2TS files from 120fps to 60fps or lower

[TaZ-z]

Hey guys,

im pretty new to the whole video stuff etc., so please be aware that my understanding is quite low...
Most recently, I have some problems with the records of my Hauppauge HD PVR. These records are M2Ts files. I import them in sony vegas pro and it crashes when I try to edit the record. After some research, I found out that the records are recorded with 119,xxx fps instead of 59,xxx fps. I know already the reason for that (some driver issues), but I want to save the old records.
Currently, I use a tool (ArcSoft MediaConverter), that was delivered with the HD PVR, to convert the videos. Unfortunately, the records suffer a slight quality loss. Hence, Im looking for another way to reduce the fps of these records.

I saw in another thread that it is appropiate to use MediaInfo to provide information about the video files, so here are the information for one of these records:

General
ID                               : 0 (0x0)
Complete name                    : xxx\20111203_001216.m2ts
Format                           : MPEG-TS
File size                        : 1.52 GiB
Duration                         : 15mn 14s
Overall bit rate mode            : Variable
Overall bit rate                 : 14.2 Mbps
Maximum Overall bit rate         : 18.0 Mbps

Video
ID                               : 4113 (0x1011)
Menu ID                          : 1 (0x1)
Format                           : AVC
Format/Info                      : Advanced Video Codec
Format profile                   : Main@L4.0
Format settings, CABAC           : Yes
Format settings, ReFrames        : 4 frames
Codec ID                         : 27
Duration                         : 15mn 14s
Bit rate mode                    : Variable
Bit rate                         : 13.1 Mbps
Maximum bit rate                 : 20.0 Mbps
Width                            : 1 280 pixels
Height                           : 720 pixels
Display aspect ratio             : 16:9
Frame rate                       : 59.940 fps
Color space                      : YUV
Chroma subsampling               : 4:2:0
Bit depth                        : 8 bits
Scan type                        : Progressive
Bits/(Pixel*Frame)               : 0.238
Stream size                      : 1.40 GiB (92%)
Color primaries                  : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
Transfer characteristics         : BT.709-5, BT.1361
Matrix coefficients              : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177

Audio
ID                               : 4352 (0x1100)
Menu ID                          : 1 (0x1)
Format                           : AC-3
Format/Info                      : Audio Coding 3
Mode extension                   : CM (complete main)
Codec ID                         : 129
Duration                         : 15mn 14s
Bit rate mode                    : Constant
Bit rate                         : 384 Kbps
Channel(s)                       : 2 channels
Channel positions                : Front: L R
Sampling rate                    : 48.0 KHz
Bit depth                        : 16 bits
Compression mode                 : Lossy
Delay relative to video          : -50ms
Stream size                      : 41.9 MiB (3%)

interestingly, the frame rate is given with 59,940 fps. When I select this record to import in vegas pro, it shows 119,xxx fps. Is there are convient way to save these records?

Thanks in advance,
TaZz

[poisondeathray]

Apparently Vegas has issues with certain versions of the HD-PVR, probably firmware or driver issues like you said. Other editors like Premiere do not seem to have the problem

There is a workaround by re-wrapping the file with ffmbc. Re-wrapping just copies the video into a different container, so quality is unaffected. You can find it in this thread, page 2
https://forum.videohelp.com/threads/338538-Problems-with-Sony-vegas-and-my-HD-PVR-Repos...-another-forum

[TaZ-z]

This sounds very good and if this is going to work, i will be a very happy guy. Unfortunately, I dont have the possibility to check it out right now, but I will keep you updated... Thanks anyways!

[TaZ-z]

It works! Awesome!
Thank you very much. Even though the solution is not trivial (atleast from my point of view), I got a quick and uncomplicated response. Lucky me that you saw this thread...