Testing network performance

[Karamano]

Hello, some updates. 1st, regarding 720p files that stutter over network stream, it is codec issues for sure. The problems with one type of file was DTS- known issue, and some versions of XBMC for RPi managed to solve (or almost) the issue. In other words 720p files play fine now.
One exception is an M4V file of what was labelled "WEB RIP" so there might be some unconventional encoding involved. The file SHOULD under all circumstances play smoothly with no problem and plays smoothly on my Sony streamer, but it doesn't on the RPi via network stream. Again- this must be some kind of codec issue with the RPi because it fails to play smoothly under all RPi XBMC versions via network. When I tried cutting a sample of the video to upload so people can checkout no program could cut it exactly as it was and something always slightly changes, audio or video, and the sample would play smoothly on the RPi while the original video still does not. While I see all files buffer and cache their videos, this video fails to produce more than a 2mb cache and it runs down very quickly and thus the video stops every few seconds. Heavier videos run with no problem.


This the the M4V video details:

Quote:Format file : MPEG-4
Codec ID : M4V
File size : 710 MiB
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Bit rate : 4 111 Kbps


Audio #1
Format : AAC
Bit rate mode : Variable
Bit rate : 154 Kbps
Maximum bit rate : 258 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy

Audio #2
Format : AC-3
Bit rate mode : Constant
Bit rate : 384 Kbps
Channel(s) : 6 channels
Sampling rate : 48.0 KHz
Bit depth : 16 bits

*works smoothly via USB.

If someone has a suggestion how I can cut this file with zero re encoding so I could share it, I'll be happy to hear. Or if anyone spots from the details above a known problematic codec it will also be beneficial to know at least that the issue is noted and might be fixed in the future with these kinds of video supported.