June, 2019

  • 24 June

    MSU VQMT Gets Auto-Scaling But Watch the Scaling Algorithm

    One of the first operations I learned in FFmpeg was how to scale subsampled video files back to the source resolution to compute PSNR in the Moscow State University (MSU) Video Quality Measurement Tool (VQMT). Thankfully, for those not familiar with FFmpeg, as of VQMT version 11.1, this operation is …

May, 2019

  • 27 May

    The Evolving Encoding Ladder: What You Need to Know

    This article discusses the evolution of the encoding ladder from the fixed ladder presented by Apple in Tech Note TN2224 to context-aware-encoding, which creates a ladder that not only considers the encoding complexity of the content, but also the producer’s QoE and QoS metrics. The encoding ladder embodies the most …

January, 2017

  • 17 January

    Choosing the Data Rate for your Mezzanine Files

    (Note: This article was amended to show the comparative results at 6 mbps) Summary (The MPD) As more and more producers move their encoding to the cloud, or distributing via OVPs or other service providers, the data rate for the mezzanine files is significant factor for upload time and bandwidth …