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Lagarith is lossless compared to the uncompressed version. That uncompressed version is going to be about 2x larger than the lagarith file.
On most scenarios, you can get slightly better compression ratios by using lossless temporal compression. Lagarith is intraframe only (with the exception of null frames cases) . But ffv1, x264 in lossless mode can be set to utilize temporal compression
I can't see the sense in questions like this.
It's like asking: why if I should carry 1000 clothes I need a luggage bigger than the one I would need carrying only 10 (or 1) ? The answer is : because they take a lot of much more space. A lossless codec store ALL of the original data/information and doesn't remove anything from it. That's exactly what a lossless codec does: retain EVERYTHING. So.. you keep all 1000 clothes in your suitcase.. not only 10 (or 1) like with lossy. That's why you need a bigger suitcase. There's really nothing to understand.
My understanding is this. Take 5 frames of video. A lossy codec such as H264 would look at the second frame and say "the only part that has changed from the first frame is the small movement at the top right, so I'll only store that change", and so on. Only the changed bits of the next frame are stored (at regular intervals, though, a full frame is saved). This means the file size can be drastically reduced compared to... Lossless or uncompressed, where each frame, in it's entirety, is saved. That's why lossless files are so much larger than lossy files. Lossless, though, is much better for editing because you're not relying on the editor trying to work out what the following frames should be after you've made an edit and you don't lose data/quality when you re-save.
And when you're upscaling, doubling the size/resolution increases the number of pixels by 4 times.
I think that's why...
Last edited by Alwyn; 9th Jun 2021 at 21:07.
Lossless is a close approximation to the actual real size - non lossless formats are by definition inferior as they have removed portions of the original data considered redundant, hence loss of quality but a smaller file.SONY 75" Full array 200Hz LED TV, Yamaha A1070 amp, Zidoo UHD3000, BeyonWiz PVR V2 (Enigma2 clone), Chromecast, Windows 7 Ultimate, QNAP NAS TS851
e.g. AVC-Intra is Ly/IF, while x264 in lossless mode can still be Inter aka LL/xF, if you set the settings right.
Lossy is smaller/more efficient than lossless because it throws away valid possibly needed data. Or "quantization error residuals". Aka losing quality. A la @netmask56's "approximation".
Interframe is smaller/more efficient than intraframe for the reason you mentioned above - saving only interframe differences (usually motion, but also noise, edits...). So only partial pictures, and/or motion vectors, and/or placeholders.
Last edited by Cornucopia; 10th Jun 2021 at 01:27.
What would be a good way to reduce the file size while still keeping the quality? I really do not want to older stuff like XVID but I need to do something to reduce the file size.
Does that method for animation, gaming, etc.?
I did the encodes and it looks like I was able to save some space. Does the preset effect how end video is going to be? And does it really matter if the codec is x264 8-Bit/10-Bit?
The presets give different/more methods of optimizing the videos, reflected in the respective encode speed. You can try "faster" or "medium" as an alternative. You may not see a difference.
10 bit better preserves fine gradations of tone/color, assuming this detail exists in your source
Last edited by davexnet; 15th Jun 2021 at 12:48.
General Complete name : ***********.avi Format : AVI Format/Info : Audio Video Interleave File size : 1.84 GiB Duration : 4 min 46 s Overall bit rate : 55.1 Mb/s Writing library : VirtualDub2 build 44282/release Video ID : 0 Format : Lagarith Codec ID : LAGS Duration : 4 min 46 s Bit rate : 53.7 Mb/s Width : 960 pixels Height : 720 pixels Display aspect ratio : 4:3 Frame rate : 60.000 FPS Color space : Y Bits/(Pixel*Frame) : 1.294 Stream size : 1.79 GiB (97%) Audio ID : 1 Format : PCM Format settings : Little / Signed Codec ID : 1 Duration : 4 min 46 s Bit rate mode : Constant Bit rate : 1 411.2 kb/s Channel(s) : 2 channels Sampling rate : 44.1 kHz Bit depth : 16 bits Stream size : 48.1 MiB (3%) Alignment : Aligned on interleaves Interleave, duration : 17 ms (1.00 video frame) Interleave, preload duration : 500 msHTML Code:
Complete name :************.mkv Format : Matroska Format version : Version 4 File size : 177 MiB Duration : 4 min 46 s Overall bit rate : 5 177 kb/s Writing application : Lavf57.79.100 Writing library : Lavf57.79.100 ErrorDetectionType : Per level 1 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L3.2 Format settings : CABAC / 5 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 5 frames Codec ID : V_MPEG4/ISO/AVC Duration : 4 min 46 s Bit rate : 3 663 kb/s Width : 960 pixels Height : 720 pixels Display aspect ratio : 4:3 Frame rate mode : Constant Frame rate : 60.000 FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.088 Stream size : 125 MiB (71%) Writing library : x264 core 157 r2935M 545de2f Encoding settings : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=crf / mbtree=1 / crf=16.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 Default : Yes Forced : No Color range : Limited Matrix coefficients : BT.470 System B/G Audio ID : 2 Format : PCM Format settings : Little / Signed Codec ID : A_PCM/INT/LIT Duration : 4 min 46 s Bit rate mode : Constant Bit rate : 1 411.2 kb/s Channel(s) : 2 channels Sampling rate : 44.1 kHz Bit depth : 16 bits Stream size : 48.1 MiB (27%) Default : Yes Forced : No
Last edited by Guernsey; 16th Jun 2021 at 09:51.
mp4 may be disallowed because of the uncompressed audio. To compress the audio select
Audio/full processing mode Audio/compression (choose FFmpeg/aac )
What are you trying to achieve, exactly?
I just want good compression with low disk space that is all. I was looking for something that doesn't go beyond 2GB just for a 10 min video when I upscale it.