- Posts: 26
- Joined: Sat Aug 08, 2020 12:46 am
- Location: McKinney, TX
- Real Name: Richard Trumbore
How do I assure that I always render videos that are the same quality as the original but are not massively larger?
Would appreciate as much detail as you have the patience to provide.
Here is a comparative example: The first file played approx 40 mins. I cut out half of it and ended up with a file that is more than twice the size.
The original was downloaded and rendered with a software called VideoDownloadHelper:
General
Complete name : E:\My Videos\rendered by VDHelper.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/avc1/mp41)
File size : 639 MiB
Duration : 40 min 33 s
Overall bit rate mode : Variable
Overall bit rate : 2 203 kb/s
Movie name : Tucker Carlson Tonight Season 2023, Episode 56, Monday, Marc
Performer : WinX HD Video Converter Deluxe
Writing application : Lavf58.29.100
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L4
Format settings : CABAC / 3 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 3 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 40 min 33 s
Bit rate mode : Variable
Bit rate : 2 068 kb/s
Maximum bit rate : 6 000 kb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 30.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.033
Stream size : 600 MiB (94%)
Codec configuration box : avcC
Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 40 min 33 s
Bit rate mode : Constant
Bit rate : 129 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 44.1 kHz
Frame rate : 43.066 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 37.4 MiB (6%)
Default : Yes
Alternate group : 1
This is the Resolve 18 render using Custom defaults with the following 3 changes:
Format: MP4, Codec: H.265, Encoder: NVIDIA
General
Complete name : E:\My Videos\Rendered by Resolve18.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/mp41)
File size : 1.48 GiB
Duration : 22 min 9 s
Overall bit rate : 9 575 kb/s
Encoded date : UTC 2023-03-21 22:33:11
Tagged date : UTC 2023-03-21 22:33:11
Writing application : Blackmagic Design DaVinci Resolve Studio
Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main@L4@Main
Codec ID : hvc1
Codec ID/Info : High Efficiency Video Coding
Duration : 22 min 9 s
Bit rate : 9 378 kb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 30.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.151
Stream size : 1.45 GiB (98%)
Encoded date : UTC 2023-03-21 22:33:11
Tagged date : UTC 2023-03-21 22:33:11
Color range : Limited
Color primaries : BT.709
Matrix coefficients : BT.709
Gamma : 2.400
Codec configuration box : hvcC
Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 22 min 9 s
Bit rate mode : Constant
Bit rate : 192 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 30.4 MiB (2%)
Default : Yes
Alternate group : 1
Encoded date : UTC 2023-03-21 22:33:11
Tagged date : UTC 2023-03-21 22:33:11
Other
ID : 3
Type : Time code
Format : QuickTime TC
Duration : 22 min 9 s
Frame rate : 30.000 FPS
Time code of first frame : 01:00:00:00
Time code of last frame : 01:22:09:11
Time code, stripped : Yes
Language : English
Default : No
Encoded date : UTC 2023-03-21 22:33:11
Tagged date : UTC 2023-03-21 22:33:11
Would appreciate as much detail as you have the patience to provide.
Here is a comparative example: The first file played approx 40 mins. I cut out half of it and ended up with a file that is more than twice the size.
The original was downloaded and rendered with a software called VideoDownloadHelper:
General
Complete name : E:\My Videos\rendered by VDHelper.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/avc1/mp41)
File size : 639 MiB
Duration : 40 min 33 s
Overall bit rate mode : Variable
Overall bit rate : 2 203 kb/s
Movie name : Tucker Carlson Tonight Season 2023, Episode 56, Monday, Marc
Performer : WinX HD Video Converter Deluxe
Writing application : Lavf58.29.100
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L4
Format settings : CABAC / 3 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 3 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 40 min 33 s
Bit rate mode : Variable
Bit rate : 2 068 kb/s
Maximum bit rate : 6 000 kb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 30.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.033
Stream size : 600 MiB (94%)
Codec configuration box : avcC
Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 40 min 33 s
Bit rate mode : Constant
Bit rate : 129 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 44.1 kHz
Frame rate : 43.066 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 37.4 MiB (6%)
Default : Yes
Alternate group : 1
This is the Resolve 18 render using Custom defaults with the following 3 changes:
Format: MP4, Codec: H.265, Encoder: NVIDIA
General
Complete name : E:\My Videos\Rendered by Resolve18.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/mp41)
File size : 1.48 GiB
Duration : 22 min 9 s
Overall bit rate : 9 575 kb/s
Encoded date : UTC 2023-03-21 22:33:11
Tagged date : UTC 2023-03-21 22:33:11
Writing application : Blackmagic Design DaVinci Resolve Studio
Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main@L4@Main
Codec ID : hvc1
Codec ID/Info : High Efficiency Video Coding
Duration : 22 min 9 s
Bit rate : 9 378 kb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 30.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.151
Stream size : 1.45 GiB (98%)
Encoded date : UTC 2023-03-21 22:33:11
Tagged date : UTC 2023-03-21 22:33:11
Color range : Limited
Color primaries : BT.709
Matrix coefficients : BT.709
Gamma : 2.400
Codec configuration box : hvcC
Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 22 min 9 s
Bit rate mode : Constant
Bit rate : 192 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 30.4 MiB (2%)
Default : Yes
Alternate group : 1
Encoded date : UTC 2023-03-21 22:33:11
Tagged date : UTC 2023-03-21 22:33:11
Other
ID : 3
Type : Time code
Format : QuickTime TC
Duration : 22 min 9 s
Frame rate : 30.000 FPS
Time code of first frame : 01:00:00:00
Time code of last frame : 01:22:09:11
Time code, stripped : Yes
Language : English
Default : No
Encoded date : UTC 2023-03-21 22:33:11
Tagged date : UTC 2023-03-21 22:33:11