Process title media

This guides shows how to process media files with accsyn - utilising the built-in transcoder engine to produce media variants and proxies of all forms and shapes.

The selected media are listed in the top section, below are a tabs with different available actions (click Cancel to abort processing):

Layout

The clip extraction processor are built into the proxy player, making it fast and straightforward to make a selection of clips and still images.

Seek bar

Beneath the player window is the seek bar, reflecting the current position in movie: 

• In edit mode it has additional frame step buttons featuring 1 frame, 1 second, 3 seconds and finally 5 second jumps. 

• The selected clip range are rendered at the seek bar in green. 

• When selecting a clip, the seek bar jumps to the in point.

Player controls

These are the standard player controls featuring play, pause, stop and volume control.

Clip bin

On the right hand side you find the panel containing the clip list:

• Clip list; A list of your clips and images is located at the top. 

• Add clip and and still buttons are located beneath the list.

• Destination; What to do with the transcoded material.

• Submit button.

Clip editor

Beneath the player controls is the clip editor:

• SET IN - Set the clip or still image in point to the current seek bar frame position.

• |< - Go to the in point

• Time code display

• Copy time code to operating system clipboard, so you can paste it in a text document or similar.

• . . .  - Set time code, enter time code or frame manually.

• TC(Timecode) or FR(Frames) display selection.

• >| - Go to out pint

• SET OUT - Set the clip out point.

• High quality - Check this to have a high quality video or still image exported.

• High quality preset select - Choose the high quality transcoding preset.

• Medium quality - Check this to have a medium quality video or still image exported.

• Medium quality preset select - Choose the medium quality transcoding preset.

Adding a clip

1. Position yourself on the timeline were you want to clip in point to be.

2. Click the CLIP

3. A clip will be added, with out point set automatially +1s in time.

4. Adjust the the out point, and in point, as needed. This is done by moving the play head to the new position and either clip SET IN or SET OUT. The clip will be updated automatically, no need to save.

5. Adjust high res / medium res quality options.

Adding a still image

1. Position yourself on the timeline were you want to still image to be captured.

2. Click the STILL  button on the right.

3. A still image will be added.

4. Adjust the the time position as needed. This is done by moving the play head to the new position click SET FRAME. The still will be updated automatically, no need to save.

5. Adjust high res / medium res quality options.

Removing a clip

Click the trashcan icon located on the right hand side of the clip in the bin.

Destination

• Deliver; Have the result delivered back to either you or a custom set of recipients.

• Custom: Choose folder on storage were to store the result.

Initiate clip exctraction

Click Submit button to start transcoding on the farm, an email confirmation will be sent upon finish. 

Check the MY JOBS section at the bottom of the accsyn main GUI for progress.

Lowres transcode

This is a basic transcode, useful for producing a lowres proxy out of high resolution masters, suitable for previews and for example subtitling:

• Codec: h264 (mp4)

• Bitrate: 2Mbps

• Resolution: 1024x576

A lowres media asset will be logged, with status "TRANSCODING" that will be set to ONLINE once transcode has finished.

VOD transcode

Transcode master media to VOD media, optimised for SVOD/TVOD deliveris and further web stream (see Proxy below):

• Codec: h264 (mp4)

• Bitrate: 25Mbps

• Resolution: native

A VOD media asset will be logged, with status "TRANSCODING" that will be set to ONLINE once transcode has finished.

Streamable proxy

Create a HLS streamable HD proxy of VOD media, tailored for web streaming with the accsyn platform:

• Codec: HLS

• High quality stream: 1080 @ 12Mbps

• Medium quality stream: 1080 @ 6Mbps

• Low quality stream: 720 @ 2.8Mbps

• Mobile quality stream: 480 @ 800kbps

• Audio: Stereo (2.0)

A "hddef" proxy will be created on media, with status "TRANSCODING" that will be set to ONLINE once transcode has finished.

Note: Streaming proxies are only available on video type media.

Video proxy

A video proxy is always created by default when videos are ingested into the vault, use this processor option to re-create it:

• Codec: MP4

• Standard quality: 720 @ 2.8Mbps

• Audio: Stereo (2.0)

A "hd720" proxy will be created on media, with status "TRANSCODING" that will be set to ONLINE once transcode has finished.

Note: Video proxies are only available on video type media.

Image proxy

An image proxy is always created by default when videos are ingested into the vault, use this processor option to re-create it:

• Codec: JPG

• Standard quality: 320px max width or height, aspect ratio preserved.

A "lr" proxy will be created on media, with status "TRANSCODING" that will be set to ONLINE once transcode has finished.

Note: Image proxies are only available on image type media.

Misc

Probe

Re-run ffprobe on the selected media, useful for repairing or updating media metadata within the accsyn platform.

Update

Re-probe metadata, check for physical existance on disk, check and re-sync with proxies, 

Troubleshooting

• I can't transcode VOD, it complains media is not a master? To be able to transcode VOD, you need to select video media that has the Cat(egory) tag set to "MAS". Edit the media and set this tag to enable VOD transcode.

• Transcoding takes forever and does not complete? The accsyn backend currently contains 10 high performance transcoding machines running 24/7 chrunching media. If you recon something has stuck, check the JOBS tab at the bottom area of the app. It shows your transcode job(s) and progress.

Having issues or questions you cannot resolve on your own, don't hesitate to reach out to our support team through Chat or email.

Next, learn how to send a web stream to your recipients.