Video like a JPG slideshow

[ranosb]

Can anyone tell me why this video when transcoded to a AVCHD with tsmuxer, displays the video like a JPG slideshow?

Its 23.976 format that is acceptable, I even removed the audio and its the same!???

Complete name                    : C:\MISSION IMPOSSIBLE 1.mkv
Format                           : Matroska
File size                        : 8312.1 MiB
Duration                         : 1mn 14s
Overall bit rate                 : 8 765 Kbps
Encoded date                     : UTC 2009-07-08 19:35:13
Writing application              : mkvmerge v2.9.7 ('Tenderness') built on Jul  1 2009 18:43:35
Writing library                  : libebml v0.7.7 + libmatroska v0.8.1

Video
ID                               : 1
Format                           : AVC
Format/Info                      : Advanced Video Codec
Format profile                   : High@L5.1
Format settings, CABAC           : Yes
Format settings, ReFrames        : 8 frames
Muxing mode                      : Container profile=Unknown@5.1
Codec ID                         : V_MPEG4/ISO/AVC
Duration                         : 1mn 14s
Bit rate                         : 7 081 Kbps
Width                            : 1 920 pixels
Height                           : 800 pixels
Display aspect ratio             : 2.400
Frame rate                       : 23.976 fps
Resolution                       : 24 bits
Colorimetry                      : 4:2:0
Scan type                        : Progressive
Bits/(Pixel*Frame)               : 0.192
Stream size                      : 63.0 MiB (81%)
Title                            : MISSION IMPOSSIBLE 1
Language                         : English

[Baldrick]

ADVANCED conversion? Nope. Moving you.

Probably because it has not a valid blu-ray/avhcd resolution(1920x800 and it should 1920x1080).

Try instead multiAVCHD.

Or just rerip from your original BLU-RAY.

[ranosb]

ADVANCED conversion? Nope. Moving you.

Probably because it has not a valid blu-ray/avhcd resolution(1920x800 and it should 1920x1080).

Try instead multiAVCHD.

Or just rerip from your original BLU-RAY.

I have a few dozen mkv files that are neither exactly 1280x720 or 1920x1080 and they work just fine!

[jagabo]

On your computer? There's probably a mis-communication between your M2TS file splitter, the h.264 decoder, and/or the video renderer.

[ranosb]

On your computer? There's probably a mis-communication between your M2TS file splitter, the h.264 decoder, and/or the video renderer.

AVCHD, Its for playing back on a blu-ray player...

[jagabo]

I know you can play AVCHD on a standalone blu-ray player. But you didn't specify where your playback problem was.

Can your player handle 8 reference frames? I believe the BD spec is 5 reference frames and the AVCHD spec is 4.

[ranosb]

I know you can play AVCHD on a standalone blu-ray player. But you didn't specify where your playback problem was.

Can your player handle 8 reference frames? I believe the BD spec is 5 reference frames and the AVCHD spec is 4.

Its a Sony BDP S301, didn't know about this. But why would an encoder, or anyone create a MKV movie that is beyond a bluray players capability? What are 8 ref frames supposed to be for and why?

This video is 9 frames, and plays fine...!?

Video
ID                               : 1
Format                           : AVC
Format/Info                      : Advanced Video Codec
Format profile                   : High@L5.1
Format settings, CABAC           : Yes
Format settings, ReFrames        : 9 frames
Muxing mode                      : Container profile=Unknown@5.1
Codec ID                         : V_MPEG4/ISO/AVC
Duration                         : 1h 52mn
Bit rate                         : 6 635 Kbps
Nominal bit rate                 : 6 780 Kbps
Width                            : 1 280 pixels
Height                           : 720 pixels
Display aspect ratio             : 16/9
Frame rate                       : 23.976 fps
Resolution                       : 24 bits
Colorimetry                      : 4:2:0
Scan type                        : Progressive
Bits/(Pixel*Frame)               : 0.300
Stream size                      : 5.22 GiB (89%)
Writing library                  : x264 core 65 r1072M f586ba5

Thanks

[jagabo]

But why would an encoder, or anyone create a MKV movie that is beyond a bluray players capability?

Whoever made the recording probably wasn't concerned about BD players, just computer playback. h.264 supports up to 16 reference frames. You might as well ask why Sony specified such low specs for BD players. (Actually the answer to that is obvious -- to keep costs down.)

What are 8 ref frames supposed to be for and why?

Part of MPEG encoding is not reencoding parts of the picture that don't change from frame to frame, and using motion vectors to move blocks of pixels from one place to another rather than recompressing the pixels. So the encoder says something like "this block of pixels is the same as that block of pixels in that frame." Then, "this block of pixels is the same as that block of pixels in that other frame, but move them from here to there." The number of reference frames is the number of different frames that can be used as sources for those blocks of pixels.

This video is 9 frames, and plays fine...!?

It's possible that the header of that video says there are 9 reference frames but the video doesn't really use that many, or maybe only rarely uses that many. That video also has a standard frame size of 1280x720. As someone else noted earlier, many BD players can only handle the standard frame sizes of 1280x720 and 1920x1080.

[ranosb]

Thanks for your informative post!

Is there any fix for this, change either the frame res, or numbr of frames w/o rencoding the whole video?

[jagabo]

I believe you have to reencode the video to reduce the reference frames.