Recording a headless browser in a Docker container with Xvfb and alternative tools produces distorted videos when the resolution exceeds 1024x768.
# Start a virtual X server with a different resolution
Xvfb :99 -screen 0 1400x800x24 &
# Record screen using avconv as an alternative
avconv -f x11grab -s 1400x800 -i :99 -r 30 -y output.webm &
i had similar issues with headless-vids. try swithing to ffmpg and see if that smooths out things. might be a codec or driver glitch inside the container, but i found ffmpg more reliable than avconv.
i had similar probs and fixed it by syncing my xvfb res with ffmpeg’s settings. a few trial n eror tweaks helped me get a clean capture. maybe u can try adjusting frame rates and res parameters too. good luck!
I experienced a similar problem with high resolution recordings in containerized environments. While testing various capture tools, I discovered that ensuring consistency between the Xvfb setup and the recorder’s configuration is critical. Adjusting the virtual display parameters to match the container’s internal settings, and verifying that the selected codecs could handle the increased resolution, significantly reduced the visual distortions. I also noticed that updating to the latest capture utilities helped mitigate some of the issues. The process required some trial and error to align the virtual environment with the recording tool’s expectations, but the improvement in output quality was well worth the effort.
In my experience, the distortion issues at higher resolutions can be alleviated by using ffmpeg with proper configuration. I encountered a similar scenario and noticed that adjusting the screen grab settings to exactly match the container’s Xvfb output improved the output quality. Moreover, tuning parameters like frame rate and codec selection was crucial in reducing the artifacting in the resulting video. It appears that the compatibility between the virtual display parameters and the recording tool is a key factor in achieving distortion-free recordings.
I encountered similar challenges when capturing high-resolution video in a containerized environment. What ultimately made a difference was adjusting the virtual display’s advanced settings, particularly focusing on ensuring that the color depth and pixel configuration aligned accurately with the recording utility. Fine-tuning the parameters, especially around the pixel format, helped minimize distortions that occurred above standard resolutions. This approach, which involved several iterative tests, significantly improved the output quality and proved effective even in headless mode using Xvfb.