UnexpectedPadding with FFmpeg Scale Filter using AMD Shardware Encoder

Unexpected Padding Issue with FFmpeg Scale Filter using AMD Shardware Encoder

In this article, we will discuss the issue of unexpected padding that can occur when using the FFmpeg scale filter in conjunction with the AMD hardware encoder for transcoding and shrinking videos to the AV1 format using the ffmpeg av1_amf.

Background

The AV1 format is a royalty-free video coding format that offers better compression efficiency compared to other codecs. The AMD hardware encoder is a powerful tool for transcoding videos to the AV1 format. However, when using the FFmpeg scale filter with the AMD hardware encoder, some users have reported unexpected padding issues.

The Problem

When using the FFmpeg scale filter with the AMD hardware encoder, some users have reported that the output video has unexpected padding on the right and bottom edges. This padding can vary in size and can cause issues when playing the video in some players.

Possible Causes

There are a few possible causes for this issue:

• The FFmpeg scale filter is not correctly configured for use with the AMD hardware encoder.
• There is a bug in the FFmpeg software that is causing the issue.
• There is a bug in the AMD hardware encoder that is causing the issue.

Solutions

There are a few potential solutions to this issue:

1. Ensure that the FFmpeg scale filter is correctly configured for use with the AMD hardware encoder. This can be done by checking the FFmpeg documentation and ensuring that the correct options are being used.
2. Try using a different version of FFmpeg to see if the issue is caused by a bug in the software.
3. Try using a different hardware encoder to see if the issue is caused by a bug in the AMD hardware encoder.
4. Try using a different scale filter, such as the scale filter, to see if the issue is specific to the FFmpeg scale filter.

Example Code

Here is an example of how to use the FFmpeg scale filter with the AMD hardware encoder to transcode and shrink a video to the AV1 format:

The unexpected padding issue that can occur when using the FFmpeg scale filter with the AMD hardware encoder for transcoding and shrinking videos to the AV1 format is a known issue. While there are a few possible causes, there are also several potential solutions. By ensuring that the FFmpeg scale filter is correctly configured, trying different versions of FFmpeg and hardware encoders, and experimenting with different scale filters, users can troubleshoot and potentially resolve this issue.

References

• FFmpeg Scaling
• AV1 Hardware Encoding with AMD
• WebP Format Support