Ozer is a leading expert on H.264, H.265, and VP9 encoding for live and on-demand production. In his consulting practice, Ozer helps streaming publishers produce highly optimized and deliverable streams and to choose encoders, transcoders, and workflows that optimize cost, efficiency and flexibility. Ozer is the owner of the Streaming Learning Center and is a contributing editor to Streaming Media Magazine.

Finding the Equivalent x264 Commands for FFmpeg

Most of the x264 commands that I use in FFmeg are simple and well documented. Today, I had to duplicate a Handbrake preset that included some obscure x264-specific configuration options like the following: cabac=0:aq-mode=3:slices=24:direct=auto:subme=8:trellis=1:deblock=-2,-1:me=umh Cabac, I got, but most of the rest I use the default setting for the selected preset. Since Handbrake was displaying…

HEVC Adoption Slow But Steady Says Beamr Report

A recent report published by Unisphere Research and Streaming Media magazine, and sponsored by Beamr, reveals some interesting data on HEVC adoption. Entitled Real-World HEVC Insights: Adoption, Implications, and Workflows, the report is available for free download on StreamingMedia.com (registration required) and is authored by my colleague Tim Siglin, a Streaming Media contributing editor and…

The HEVC IP Mess is Worse than you Think

A recent article in IPWatchdog analyzed HEVC-related patent ownership and found that “only one-third of relevant patents have been declared in patent pools.” So, even companies that license from all three pools are at substantial risk of challenges from other IP owners. With a new standard coming, MPEG needs to update its licensing policies, not…

Mapping SSIM and VMAF Scores to Subjective Ratings

One visual quality metric that’s getting a bit more love lately is the Structured Similarity Index (SSIM). For example, when Facebook launched their first VR Metric, SSIM360, they based it on SSIM. I’ve generally avoided using SSIM because the scoring range is too small for my liking (0 – 1) and I wasn’t aware of any…

Per-Title Encoding Resources

For all talk about the new AV1 codec or HEVC in HLS, the simplest and fastest way to save bandwidth costs and improve your viewer’s QoE is to deploy video optimization or per-title encoding. I explore why in a column now up on StreamingMedia.com. You can implement a simple form of per-title encoding with FFmpeg…