Quick Sync, like other hardware accelerated video encoding technologies, gives lower quality results than with CPU only encoders. This allows for faster and more power efficient video processing. Unlike video encoding on a general-purpose GPU, Quick Sync is a dedicated hardware core on the processor die.
The same encoding took 83 or 86 seconds GPU-assisted, using a NVIDIA GeForce GTX 570 and an AMD Radeon HD 6870 respectively, both of which are contemporary high end GPUs.
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The same encoding using only software took 172 seconds.
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A benchmark from Tom's Hardware showed that it could encode a 449 MB, four minute 1080p file to 1024×768 in 22 seconds. Quick sync has been praised for being very fast. Quick Sync was introduced with the Sandy Bridge CPU microarchitecture on 9 January 2011. The name "Quick Sync" refers to the use case of quickly transcoding ("syncing") a video from, for example, a DVD or Blu-ray Disc to a format appropriate to, for example, a smartphone.
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With it you can create DVDs or Blu-ray* discs, create and edit 3D videos, convert 2D video files into 3D, and convert video for your portable media player and for uploading to your favorite social networking sites - all in a flash. Sets type of encoder usage.Intel Quick Sync Video, built right into the 3rd generation Intel® Core™ processor, uses dedicated media processing to make video creation and conversion faster and easier. Here is a list of main attributes specific to ' h264_amf' codec: Name To overcome the incorrect order issues, consider using " video::interlace=progressive" in your encoding configurations. You can check your video card with this ffmpeg command: ffmpeg -i "your_input_file" -flags +ilme+ildct -vcodec nvenc_h264 out_ffmpeg.h264 -loglevel verbose Some of the NVIDIA graphics units might not support the encoding of interlaced video. Here is a list of main attributes specific to ' n264' codec: Name If you have a card that supports H.265 encoding then you can use ' n265' codec to encode the H.265 video. Here is a reference for NVIDIA NVENC SDK where you can find what features are available for your graphics card: To get information about Tesla, GRID or Quadro cards supported formats, please refer to this table: It means that the limitation is up to hardware performance Up to 2 encoding sessions enforced on low-end (like Kepler-based Quadro cards) or GeForce cards only and unlimited for non-low-end cards (like Pascal-based Quadro cards). There is a hardware limitation for a number of encoding processes running at the same time.
Sets the level flag in the output bitstream Here is a list of main attributes specific for ' q 264hw' and ' q264sw' codecs: Nameįrom 1 (fast capturing, minimal quality) to 7 (maximal quality, slow capturing) It depends on the processor's performance. Quick Sync encoding has no hardware limitations for a number of encoding processes running at the same time. Note, that for all XEON processors a mainboard with C226 chipset is required.
Your Intel processor supports Quick Sync decoding if it is equipped with Intel HD Graphics 4200 or higher. Intel Quick SyncĪvailable in software and in hardware modes. In MPlatform SDK, all encoders are part of the EncoderLib component. All hardware-accelerated H.264 encoders are available with the Expert edition. In MFormats SDK, all CPU-based H.264 encoding options are available in the Professional edition. There are several options for H.264 encoding in MFormats SDK and MPlatform SDK - both CPU-based and GPU-powered.
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