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ffmpeg desktop

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Thomas Zarebczan 2020-03-26 12:09:51 -04:00
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content/faq/video-publishing-guide.md
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@ -4,16 +4,27 @@ category: publisher
order: 2
---
Even though LBRY does not enforce any file size, resolution, or quality of video content, we still encourage publishers to adhere to web optimized bitrates/sizes to ensure a good overall experience for lbry.tv and app users. LBRY does not currently transcode on upload or when viewing, but we will be offering this option on the publish page in the near future. At the moment, we'd recommend creators compress their raw videos with one of the below methods to ensure a good streaming experience.
Even though LBRY does not enforce any file size, resolution, or quality of video content, we still encourage publishers to adhere to web optimized bitrates/sizes to ensure a good overall experience for lbry.tv and app users. LBRY does not currently transcode on upload or when viewing automatically, but an option in available on LBRY Desktop to do so during the publish process. If you are publishing on Android or lbry.tv, please follow the manual instructions for Handbrake/ffmpeg below.
See our [Publishing FAQ](/faq/how-to-publish) for more information about the publishing process.
## Recommended settings and bitrate
We recommend uploading videos at 720P in an MP4 container, H264 video encoding, and AAC audio with a maximum bitrate of 5Mbps (check file properties to see current rate). It's also helps if the moov atom is at the front of the file - this is sometimes referred to as Fast Start (ffmpeg) or Web Optimized (Handbrake). If the content is not compatible or over 5Mbps, you'll be given a warning on the publish page.
We recommend uploading videos at 720P in an MP4 container, H264 video encoding, and AAC audio with a maximum bitrate of 5Mbps (check file properties to see current rate). It's also helps if the moov atom is at the front of the file - this is sometimes referred to as Fast Start (ffmpeg) or Web Optimized (Handbrake). If the content is not compatible or over 5Mbps, you'll be given a warning on the publish page.
If you prefer 1080P, please try to keep the bitrate at or below 8Mbps. You'll be given a warning on the publish page, but you can still proceed.
## Automated transcoding in LBRY Desktop {#automatic}
The LBRY Desktop application supports local transcoding of videos during the publish process. This will require ffmpeg (automated process coming later) to be installed and will create a transcoded copy alongside your original file.
![publish](https://spee.ch/0/publish-page.jpeg)
ffmpeg will automatically be found from your system path or [lbrynet folder](/faq/lbry-directories), or you can also use a custom path. The easiest way to configure ffmpeg on Windows/Mac is to download the executables and copy the bin folder into a new folder called ffmpeg inside your [lbrynet folder](/faq/lbry-directories). The final path to the files would be something like `lbry/lbrynet/ffmpeg/bin/ffmpeg.exe`. For Linux, the install process typically adds it to your system path.
This will allow the application to automatically detect it, but you can also choose your own custom path on the Settings page (will require restart in most cases).
![settings](https://spee.ch/4/ffmpeg-settings.jpg)
## Instructions for Handbrake
If using Handbrake, we recommended the following settings:
@ -30,5 +41,5 @@ If using Handbrake, we recommended the following settings:
If using FFMPEG, we recommend the following parameters, and replace input/output with the appropriate file path:
```
ffmpeg -i input.avi -c:v libx264 -crf 21 -preset faster -pix_fmt yuv420p -maxrate 5000K -bufsize 5000K -vf 'scale=if(gte(iw\,ih)\,min(2560\,iw)\,-2):if(lt(iw\,ih)\,min(2560\,ih)\,-2)' -movflags +faststart -c:a aac -b:a 160k output.mp4
ffmpeg -i input.avi -c:v libx264 -crf 21 -preset faster -pix_fmt yuv420p -maxrate 5000K -bufsize 5000K -vf 'scale=if(gte(iw\,ih)\,min(1920\,iw)\,-2):if(lt(iw\,ih)\,min(1920\,ih)\,-2)' -movflags +faststart -c:a aac -b:a 160k output.mp4
```