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FFMPEG - Transcode - Drives question


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pir8radio
Posted (edited)

Ok....   Bear with me..   (examples only)  My transcode drive is A and my media is located on drive B.   My understanding of how ffmpeg and emby streaming works is that when a client is transcoding a video, ffmpeg is grabbing the video from drive B (media drive) and creating lower quality .ts chunks and placing those chunks onto the drive A (transcoding drive)  Where emby serves up a playlist pointing to those .ts files...  Emby then serves up these .ts files from drive A (transcoding drive) and feeding them to the client as it requests these chunks....   However I am monitoring the drives while transcoding a 4K video, and I see my media drive B reading like crazy (expected), I see the transcoding drive A writing at the bitrate that I would expect (client set to 15-Mbps, drive writing at about the same) All of that as expected.  However I NEVER see anything reading the transcoding drive.... I can track the data from media file to ffmpeg to transcoding, but I never see anything reading from the transcoding drive...  how is the .ts magically leaving the transcoding drive!?      

 

My measurement system works, I tested reading from the drive.  I'm trying to find a bottleneck and its bothering me that I can't follow the bit trail....

 

Transcode Drive A Stats:

590a7cde9ae53_Capture.png

Edited by pir8radio
Posted

it's probably just happening slowly. the idea behind HLS streaming is that the player downloads the segments just in time.

pir8radio
Posted

it's probably just happening slowly. the idea behind HLS streaming is that the player downloads the segments just in time.

 

10-4 Ill look a little deeper, maybe its just missing the reads like you said..  Thanks!  

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