# transcoding issue **URL:** \ **Category:** Dev/API Corner\ **Tags:** other-dev\ **Created:** [August 20, 2014, 7:31pm UTC](https://forums.plex.tv/t/transcoding-issue/74403 "2014-08-20T19:31:01Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![awvc1\_hotmail.com](https://avatars.discourse-cdn.com/v4/letter/a/45deac/32.png) [@awvc1\_hotmail.com](https://forums.plex.tv/u/awvc1_hotmail.com)\ **Post date:** [August 20, 2014, 7:31pm UTC](https://forums.plex.tv/t/transcoding-issue/74403/1 "2014-08-20T19:31:01Z")
I'm trying to initiate a transcoding session based on what I've read from forum articles. I notice the zip file of javascript code is no longer available, so I don't know if this is still valid, but can somebody give me some advice please?   I have generated a url , hmac256 hashed it with the secret key previously published, and based 64 encoded it.  My problem seems to come when I submit this my server errors with an http 400 (bad request) error.   the server log is as below:   Aug 20, 2014 12:26:05 [0x808616000] DEBUG - Request: GET /video/:/transcode/segmented/start.m3u8?identifier=com.plexapp.plugins.library&ratingKey=8947&offset=0&quality=5&url=http%253A%252F%252F127.0.0.1%252Flibrary%252Fmetadata%252F8947&3g=0&httpCookies=&userAgent=@1408562765&X-Plex-Access-Key=KQMIY6GATPC63AIMC4R2&X-Plex-Access-Time=1408562765&X-Plex-Access-Code=u+4XH/qJe8mf6EKH+dOpPnK3+dAQcjIfchDv3GwDLLw= [81.108.89.166:37527] (3 live) Aug 20, 2014 12:26:05 [0x808616000] DEBUG -  \* identifier =\> com.plexapp.plugins.library Aug 20, 2014 12:26:05 [0x808616000] DEBUG -  \* ratingKey =\> 8947 Aug 20, 2014 12:26:05 [0x808616000] DEBUG -  \* offset =\> 0 Aug 20, 2014 12:26:05 [0x808616000] DEBUG -  \* quality =\> 5 Aug 20, 2014 12:26:05 [0x808616000] DEBUG -  \* url =\> http%3A%2F%2F127.0.0.1%2Flibrary%2Fmetadata%2F8947 Aug 20, 2014 12:26:05 [0x808616000] DEBUG -  \* 3g =\> 0 Aug 20, 2014 12:26:05 [0x808616000] DEBUG -  \* httpCookies =\>  Aug 20, 2014 12:26:05 [0x808616000] DEBUG -  \* userAgent =\> @1408562765 Aug 20, 2014 12:26:05 [0x808616000] DEBUG -  \* X-Plex-Access-Key =\> KQMIY6GATPC63AIMC4R2 Aug 20, 2014 12:26:05 [0x808616000] DEBUG -  \* X-Plex-Access-Time =\> 1408562765 Aug 20, 2014 12:26:05 [0x808616000] ERROR - Had trouble breaking X-Plex-Access-Code=u+4XH/qJe8mf6EKH+dOpPnK3+dAQcjIfchDv3GwDLLw= Aug 20, 2014 12:26:05 [0x808616000] ERROR - ERROR: Parsing request failed.   I have verified my code produces hmacsha256 hashes ok, and I think it converts to base64 ok - any test inputs anyone could recommend for me to try this would definetly help if they have any though.   Does it look like its just my hashing at fault, or is my URL wrong? I'm really stuck and I'd really appreciate any advice anyone can offer please?   many thanks in advance. ---
**Author:** ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)\ **Post date:** [December 21, 2019, 2:47am UTC](https://forums.plex.tv/t/transcoding-issue/74403/2 "2019-12-21T02:47:33Z")
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