Appreciate the honesty here — most posts on new codec features skip the "it didn't work" results. The VK_ERROR_DEVICE_LOST on AV1 encoding is a known driver-level issue with certain Nvidia 5xx series drivers and Vulkan 1.3. It's not an FFmpeg bug. The non-monotonic DTS warning before the crash is the tell — it means the Vulkan encoder is receiving frames out of order, likely because the hardware decode pipeline is feeding frames faster than the encoder queue can handle them.
Appreciate the honesty here — most posts on new codec features skip the "it didn't work" results. The VK_ERROR_DEVICE_LOST on AV1 encoding is a known driver-level issue with certain Nvidia 5xx series drivers and Vulkan 1.3. It's not an FFmpeg bug. The non-monotonic DTS warning before the crash is the tell — it means the Vulkan encoder is receiving frames out of order, likely because the hardware decode pipeline is feeding frames faster than the encoder queue can handle them.
Thanks for the feedback.
Waiting also for FFmpeg's team to respond: https://code.ffmpeg.org/FFmpeg/FFmpeg/issues/20540