According to RFC6381 The 'Codecs' and 'Profiles' Parameters for 'Bucket' Media Types, codecs paremeters for H.264 are contained in the 'avc1' sample entry, and are is represented as follows:
avc1.PPCCLL
That is, the string 'avc1.' (or 'avc2.', I'm not sure what the difference is yet), followed by 3 bytes represented in hex without the '0x' prefix, where the bytes represent the following:
PP = profile_idc
CC = constraint_set flags
LL = level_idc
These fields are defined in in Annex 1 of ITU-T H.264 and ISO/IEC 14496-10:2012 twinned standards. ITU-T H.264 can be downloaded for free.
profile_idc defines the H.264 profile. ITU-T H.264 doesn't have a single table listing what the different profile_idc values mean, but handily, Microsoft defines an eAVEncH264VProfile enumeration on the decimal values of the profile_idc in Codecapi.h (available on Win7):
enum eAVEncH264VProfile {
eAVEncH264VProfile_unknown = 0,
eAVEncH264VProfile_Simple = 66,
eAVEncH264VProfile_Base = 66,
eAVEncH264VProfile_Main = 77,
eAVEncH264VProfile_High = 100,
eAVEncH264VProfile_422 = 122,
eAVEncH264VProfile_High10 = 110,
eAVEncH264VProfile_444 = 144,
eAVEncH264VProfile_Extended = 88,
eAVEncH264VProfile_ScalableBase = 83,
eAVEncH264VProfile_ScalableHigh = 86,
eAVEncH264VProfile_MultiviewHigh = 118,
eAVEncH264VProfile_StereoHigh = 128,
eAVEncH264VProfile_ConstrainedBase = 256,
eAVEncH264VProfile_UCConstrainedHigh = 257,
eAVEncH264VProfile_UCScalableConstrainedBase = 258,
eAVEncH264VProfile_UCScalableConstrainedHigh = 259
};
So for example, avc1.4D401E has a profile_idc of 0x4D, which is 77 in decimal, so it's main profile.
constraint_set flags are encoded as a bit flags 6 bitfields named constraint_set0_flag through to constraint_set5_flag. The meaning of a constraint_setN_flag being set depends on the profile being represented. The bits are stored in with constraint_set0_flag in the high bit, and so there are two padding 0s in the low bits. So for example, avc1.4D401E, the contraint_set flags are 0x40, so that's 01000000b, thus this means constraint_set1_flag is set.
The level number, level_idc, is defined as fixed point, from 1 to 5.2, with an oddball 1b level, as defined in ITU-T H.264 in Table A-1 - Level Limits. The level_idc is encoded in the codecs parameter as 10 times the level number, i.e. level 5.1 is represented as decimal 51, or 0x33 hex. So continuing our example avc1.4D401E, the level_idc is 1E, or 30 decimal, so level 3.0.
Level 1b is an oddball encoding, and is encoded as 11 decimal with the constraint_set3_flag equal to 1. If the constraint_set3_flag is not equal to 1, level 1.1 is encoded.
Microsoft also conveniently define this in the eAVEncH264VLevel enumeration.
enum eAVEncH264VLevel {
eAVEncH264VLevel1 = 10,
eAVEncH264VLevel1_b = 11,
eAVEncH264VLevel1_1 = 11,
eAVEncH264VLevel1_2 = 12,
eAVEncH264VLevel1_3 = 13,
eAVEncH264VLevel2 = 20,
eAVEncH264VLevel2_1 = 21,
eAVEncH264VLevel2_2 = 22,
eAVEncH264VLevel3 = 30,
eAVEncH264VLevel3_1 = 31,
eAVEncH264VLevel3_2 = 32,
eAVEncH264VLevel4 = 40,
eAVEncH264VLevel4_1 = 41,
eAVEncH264VLevel4_2 = 42,
eAVEncH264VLevel5 = 50,
eAVEncH264VLevel5_1 = 51,
eAVEncH264VLevel5_2 = 51
}
HVC1 is a file extension that contains RAW data encoded with H.265/HEVC video compression file format. HVC1 is a codec ID for HEVC codec. Simply put, codec ID is a unique registered identifier that represents the encoding stored within the Track. H.265 videos use both HVC1 and HEV1 codec IDs. Izotope rx no sound. HEVC or High-Efficiency Video Coding is a video compression standard.This is also known as H.265 or MPEG-H Part 2.It is a successor to AVC or H.264 or MPEG-4.HEVC maintains the same quality of.
Files with hvc1 file extension are related to the compression video format called H.265 / HEVC. An hvc1 file stores H.265 RAW video data.
Software that open hvc1 file
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HVC1 file extension- H.265 RAW video
What is hvc1 file? How to open hvc1 files?
File type specification:
File extension hvc1 is associated with the H.265 / HEVC (High Efficiency Video Coding) video compression file format introduced in 2013.
It supports resolutions up to 8192×4320, including 8K UHD and improved improved video quality at the same bit rate than its predecessor known as H.264.
A .hvc1 file contains RAW video data encoded with H.265.
The default software associated to open hvc1 file:
Company or developer:
VideoLAN Project Team
Very popular multimedia player developed for Windows, Apple Mac, Linux, Unix and various other operating systems and platforms.
VLC Teamviewer dual monitor. can playback many of the video formats (AVI, MKV, OGV, WMV, ASF, MOV..) and audio formats (MP3, AAC, M4A, OGG, FLAC..) as well as support of subtitles for video. It can also be used as a streaming server and multimedia transcoder.
Help how to open:
Use compatible tools to playback .hvc1 files.
How to convert:
Probably can be exported to other formats.
List of recommended software applications associated to the .hvc1 file extension
Hvc1 Codec Download
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open hvc1 file, edit hvc1 file, convert hvc1 file, view hvc1 file, play hvc1 file etc. (if exist software for corresponding action in File-Extensions.org's database).
hvc1 file players - programs that can play hvc1 file - H.265 RAW video
Hvc1 Codec For Vlc
Programs supporting the exension hvc1 on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for play hvc1 file action.
