More > JRiver Media Center 33 for Windows
MC media read speed problem over VPN
mattkhan:
Let me ask again, how big is the file? What format is it?
Compare to the other option as per
https://yabb.jriver.com/interact/index.php/topic,111406.msg770015.html#msg770015
Also compare to without loading into memory
Ultimately given the niche scenario, it's unlikely anyone else is going to reproduce so it's on you to narrow it down to an MC problem systematically otherwise I think, not unreasonably, you're likely to get the "it's the os/network/hardware" answer
clarus7:
File format is flac. bit rate ~4800kbps. (this is a 192-24 file)
The file size in this example is 112MB. However, the problem is not specific to a file. It's a general problem with anything with bitrate above 1Mbps.
I have attached the network throughput for the three different modes of memory playback.
loading non-decode file into memory shows that it can read at high bandwidth and finish quickly. However, this will break gapless playback as it has to wait to read in the next track completely before resuming playback.
If these three mode/capture shown does not indicate a specific problem with flac file playback when using "decoded file in memory playback". Please let me know what else would you need. The bandwidth usage show that MC is not reading file as quickly as it should even when memory and bandwidth is available.
In addition, I try a different file format - SACD ISO file (5.6Mbps). Even when you specify "load full file into memory", it doesn't pull in the full track before it start playing. It does not show a peak in bandwidth during the initial buffering stage, only average at about 7.5Mbps. Fortunately, it is sufficient to maintain stutter free playback. Switching to "load decoded file into memory" doesn't change the bandwidth usage behavior.
I also try cue+wav file of a CD (1.4Mbps). The bandwidth usage is very similar to the SACD ISO file case average 7.5Mbps.
Based on these observation, seems like there is a specific problem with handling flac file memory playback with decoded file into memory.
For ISO/Cue file handling, there seems to be a ceiling for bandwidth usage.
Hendrik:
--- Quote from: zybex on September 12, 2024, 04:39:02 pm ---What about the RANDOM_ACCESS flag? It was being used on the Thumbnail reader until you removed it:
https://yabb.jriver.com/interact/index.php/topic,127472.msg885286.html#msg885286
--- End quote ---
As the old thread indicates, its not actually used frequently, and definitely not for media files.
clarus7:
Trying to follow up on this thread. Is there any additional information that I need to provide?
JimH:
Can you test without the VPN? Just to help determine where the problem is.
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