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Technical FAQ
What is "encoding bandwidth" and how do you calculate usage of your system?
Total encoding bandwith is term for tracking your usage of our encoding system. It is the sum of all of your source media sent into fastencoding and all of the encoded media sent out of fastencoding. (video in + video out = total encoding bandwidth) For example lets say you want to enocde a 1GB .mov video file into two files (e.g Flash 9 and our iPod preset). After our encoding process the Flash file is compressed to 22 MB and the iPod file is compressed to 11MB. The total encoding bandwidth recorded in your account would be (1GB + 22MB + 11MB = 1.33 GB).
What is the"user key" in profile?
When using the XML API, you must send two parameters in your XML query to authenticate your request: User ID and User Key.
You can see your user ID at the "My Account" page. You can change your User Key at anytime.
You can see your user ID at the "My Account" page. You can change your User Key at anytime.
Where can find complete documentation of the API?
You can find API docs there: http://www.encoding.com/wdocs/ApiDoc
What should I enter in Notify field?
In the Notify field you can use either mailto: link or the URL of your script. When your Media is finished, an HTTP POST request with will be sent to the specified location.
Please refer to the API docs for details of POST request data format.
Please refer to the API docs for details of POST request data format.
How can I specify where my source media is located?
As s source media you must specify an URL that could be of three types:
http://[user]:[password]@[server]/[path]/[filename] or
ftp://[user]:[password]@[server]/[path]/[filename] or
http://[your_bucket].s3.amazonaws.com/[path]/[filename]
You can omit [user]:[password]@ in case of public (not password protected) resources.
In last case, the bucket must have READ permission for AWS user 1a85ad8fea02b4d948b962948f69972a72da6bed800a7e9ca7d0b43dc61d5869.
http://[user]:[password]@[server]/[path]/[filename] or
ftp://[user]:[password]@[server]/[path]/[filename] or
http://[your_bucket].s3.amazonaws.com/[path]/[filename]
You can omit [user]:[password]@ in case of public (not password protected) resources.
In last case, the bucket must have READ permission for AWS user 1a85ad8fea02b4d948b962948f69972a72da6bed800a7e9ca7d0b43dc61d5869.
What input media formats are supported?
The most common formats you can use safely are:
asf - asf/wmv format
avi - avi format
flv - flv format
m4v - raw MPEG4 video format
mov,mp4,m4a,3gp,3g2,mj2 - QuickTime/MPEG4/Motion JPEG 2000 format
Please look at API docs for the complete list of supported input fortmats.
asf - asf/wmv format
avi - avi format
flv - flv format
m4v - raw MPEG4 video format
mov,mp4,m4a,3gp,3g2,mj2 - QuickTime/MPEG4/Motion JPEG 2000 format
Please look at API docs for the complete list of supported input fortmats.
What output encoded media formats are supported?
We encode your media into the following formats: wmv (asf), mp4, flv and mov. Also you can use our ready-to-use sets of formats/sizes/parameters for:
Flash 9, 3GP, Ipod/Iphone, Apple TV, PSP, Zune.
Flash 9, 3GP, Ipod/Iphone, Apple TV, PSP, Zune.
What is a "Encoding Tasks?
A Encoding Task includes encoding format and parameters (size, bitrate, etc.), and optionally a destination URL for the encoded result.
So, one encoded media output corresponds to one Encoding Task.
You can create several Encoding Tasks for each source media.
So, one encoded media output corresponds to one Encoding Task.
You can create several Encoding Tasks for each source media.
What Audio bitrate (kbps) value should I use and how will it increase file size and quality?
In most cases you can use the default audio bitrate of 64k. If you need quality stereo sound, use 128k or 192k.
For home DVD systems use up to 320k, assuming that your source video has appropriate audio quality.
Bitrate/filesize mapping is simple. The size of the audio stream is the audio bitrate multiplied by the duration and divided by 8:
size (bytes) = bitrate (bps) * duration (sec) / 8 .
For home DVD systems use up to 320k, assuming that your source video has appropriate audio quality.
Bitrate/filesize mapping is simple. The size of the audio stream is the audio bitrate multiplied by the duration and divided by 8:
size (bytes) = bitrate (bps) * duration (sec) / 8 .
What is Max Audio sample rate (Hz)?
The maximum is 2822400 Hz.
How to use Crop feature, could you give sample values?
While cropping you simple specify how many pixels will be cut from each side (left, top, right, bottom) of the original frame size.
After cropping, the result frame will be resized and centered to fit output size (if necessary), as usual.
Example: the source file size is 704x576, and we want to crop 10 pixels from each size. Just set 10 for top, left, right and bottom.
So, after cropping the frame size is 684x556. Assume we set the result size to 640x480.
Then, the frame will be resized to 590x480 and 25-pixels pads will be added to the left and to the right of the frame.
After cropping, the result frame will be resized and centered to fit output size (if necessary), as usual.
Example: the source file size is 704x576, and we want to crop 10 pixels from each size. Just set 10 for top, left, right and bottom.
So, after cropping the frame size is 684x556. Assume we set the result size to 640x480.
Then, the frame will be resized to 590x480 and 25-pixels pads will be added to the left and to the right of the frame.
I have created a new EncodingTask, will it automatically proceed to encoding?
If you create a new task in your user web interface, it won't automatically be processed. First, create all encoding tasks for selected media, then press the Process button.
If you send tasks within XML API request, they will be put on the encoding queue immediately.
If you send tasks within XML API request, they will be put on the encoding queue immediately.
When I click the Process button, how can I see the status? When will my Enocding Tasks be finished?
You can see the actual status of your media files and encoding tasks at the Encoding Queue page. You can check "Automatic refresh" checkbox and specify how ofter the page will be refreshed.
The time your tasks will be done depends on file size and encoding parameters, and also how many tasks are being processed at the moment. Most Encoding Tasks are complete in no more than than 10 minutes.
The time your tasks will be done depends on file size and encoding parameters, and also how many tasks are being processed at the moment. Most Encoding Tasks are complete in no more than than 10 minutes.
What is the maximum file size supported for source media?
There is no limit for file size to use if it doesn't exceed your account storage limit.
How can I monitor the progress?
Unfortunately you can't see real-time progress, however we do provide a estimated time for completion of each encoding task within the "Encoding Queue" section of your web based interface.
How can I check how much storage space I have used?
Go to Statistics page of your User Interface and you'll see total/used/available storage space for your account.
How can I check how much bandwidth I have used?
Go to Statistics page of your User Interface and you'll see total/used/available bandwidth for your account.
What does the error message 'Aborted: Overtime limit (900) exceeded' mean?
The error occurs when the task hangs at the encoding stage, and its execution time tops the estimated time by 900 seconds. See API docs.
What is the error: 'Could not write header for output file (incorrect codec parameters ?)'
The specified parameters such as bitrate or sample rate are not allowed for the specified codec. See API docs.
What does the 'Unknown encoder' error mean?
It means that unknown or unsupported video/audio codec is specified. See API docs.
Could I send XML query through usual Web-browser?
Yes, there is a simple form to send XML request:
http://manage.encoding.com/send_xml.php
http://manage.encoding.com/send_xml.php
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