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  2. Comparison of YouTube downloaders - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_YouTube_down...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

  3. List of 4K video recording devices - Wikipedia

    en.wikipedia.org/wiki/List_of_4K_video_recording...

    Samsung NX500 - Same 28 MP APS-C sensor as NXI but 4K video is not downsampled from 6.5K so less details and more noise than the NX1 - with this 2.4× crop factor the kit lens become a 38–120mm f8.5–13.4 equivalent for depth of field; 15 min max recording time limit

  4. Video file format - Wikipedia

    en.wikipedia.org/wiki/Video_file_format

    A standardized (or in some cases de facto standard) video file type such as .webm is a profile specified by a restriction on which container format and which video and audio compression formats are allowed. The coded video and audio inside a video file container (i.e. not headers, footers, and metadata) is called the essence.

  5. Low-definition television - Wikipedia

    en.wikipedia.org/wiki/Low-definition_television

    Used in some webcams and for video recordings in early/budget digital cameras and cameraphones, and low-end smartphone screens. Original YouTube resolution. Maximum recommended size for "large" MMS videos. SIF (525) 240p 352×240 84,480 SAR 22:15 / DAR 4:3 NTSC-standard VCD / super-long-play DVD. Narrow/tall pixels. NTSC widescreen 240p 426× ...

  6. File:4K resolution sample.ogv - Wikipedia

    en.wikipedia.org/wiki/File:4K_resolution_sample.ogv

    Original file (Ogg multiplexed audio/video file, Theora/Vorbis, length 44 s, 4,096 × 2,304 pixels, 1.48 Mbps overall, file size: 7.78 MB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.

  7. MP4 file format - Wikipedia

    en.wikipedia.org/wiki/MP4_file_format

    MPEG-4 Part 14, or MP4, is a digital multimedia container format most commonly used to store video and audio, but it can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet. The only filename extension for MPEG-4 Part 14 files as defined by the ...

  8. Advanced Video Coding - Wikipedia

    en.wikipedia.org/wiki/Advanced_Video_Coding

    A YouTube video statistics with AVC (H.264) video codec and Opus audio format. In 2009, the HTML5 working group was split between supporters of Ogg Theora, a free video format which is thought to be unencumbered by patents, and H.264, which contains patented technology.

  9. List of open-source codecs - Wikipedia

    en.wikipedia.org/wiki/List_of_open-source_codecs

    This is a listing of open-source codecs—that is, open-source software implementations of audio or video coding formats, audio codecs and video codecs respectively. Many of the codecs listed implement media formats that are restricted by patents and are hence not open formats.