Originally Posted by thisfknguy
Without starting a new thread, I'm confused by the word transcoding.
I just purchased a new Samusng TV that has the plex app, with PMS running on my c2d 2.0 macbook over wifi, I can watch dark knight rises which is a 12gb mkv file (h264, 8000bits) with no issues, fastfoorward at 2x then pressing play is smooth however 4x & 8x requires some buffering.
Will the Synology DS413j play my rips? (1080p, h264, mkv, dts/ac3 with all subtitles, english & german).
What issues may I come across?
If the player supports all the codecs in the file you're streaming, then transcoding is not necessary. The server will just pass the movie over the network to the player. This doesn't require much CPU usage at all. This is ideal
for watching video over your local network, and there's also no loss in video quality.
But say for instance, the Samsung TV or whatever player you're using doesn't support VC-1, then the Plex server will need to transcode
files that contain VC-1 (some blu-rays for instance) on the fly, converting it from VC-1 to h.264 (or to whatever codec the player supports). This is what's extremely taxing on the CPU. I'm not sure what codecs the Samsung TV supports, but ideally you want your player to support all of the codecs that your video files contain.
There are other instances where you might want to transcode. Say you're watching something on your iPad in your home, and your wifi can't handle streaming the large video file smoothly. Then, you might want to consider choosing a lower quality on the iPad in order to stream the video smoothly. This will require the video to be transcoded to a lower quality.
Lastly, if you're outside your home and want to stream something to your iPhone or iPad or what have you, then your home's upload speed (and/or your cell phone's download speed) may not have sufficient bandwidth to stream the video at full quality. Again, the video will need to be transcoded to a lower quality.
All of these instances that require transcoding require lots of CPU power. The amount of CPU power though depends on the quality of your original video files. For instance a 40+ mb/s blu-ray rip will require a great deal more power than an 8 mb/s video to transcode.