encoder

问题 I'm using VirtualDub and I want to digitalize a VHS movie frame by frame. But I need a codec which supports intra-frames. Do the following codecs supports intra-frame? If not where can I get or buy a codec with intra-frame? 回答1: From your current choices: Lagarith may be ok Xvid can be set to intra mode but this is somewhat pointless. There is a lot of better free codecs. utvideo and magicyuv are excellent lossless intra codecs. cineform is very good lossy intra codec but somewhat more

问题 I'm working with text data where a lot of user error has to be accounted for, eg. there are a lot of cases where upon predicting new data, new labels will occur that the encoder hasn't seen before due to typos etc. I just want to ignore these (so when I run labelencoder.transform(df_newdata['GL_Description']) , I just want it to ignore anything it hasn't seen before). How can I do this? I didn't find a parameter for this in the docs, but is the only way really to check every word one-by-one

问题 I want to use Argon2i for my Symfony 4 encoder as I've seen multiple articles about how it's supposedly better than bcrypt or pbkdf2. Unfortunately I don't really know what values to use for the memory_cost, time_cost or threads on my system. What are good values and how can I figure out what my values should be? 回答1: What are good values? This is HIGHLY subjective based on your server. @Martin has done a reasonbly good description of this here and you can read the RFC specs here. But to

问题 I am trying to build a fast 8-bit greyscale PNG encoder. Unfortunately I must be misunderstanding part of the spec. Smaller image sizes seem to work, but the larger ones will only open in some image viewers. This image (with multiple DEFLATE Blocks) gives a "Decompression error in IDAT" error in my image viewer but opens fine in my browser: This image has just one DEFLATE block but also gives an error: Below I will outline what I put in my IDAT chunk in case you can easily spot any mistakes

问题 I am using the following code to leverage Windows Media Encoder to record screen. I am using Windows Vista, screen resolution 1024 × 768， 32-bit. My issue is, the video could be recorded successfully, but when I playback the recorded video, the quality of video is not very good -- e.g. characters are very obscure. I am wondering what are the parameters I should try to tune to get better quality of recorder video? My code, static WMEncoder encoder = new WMEncoder(); IWMEncSourceGroup SrcGrp;

问题 I am somewhat new to verilog, I tried running this code but it gives me an error: module enc(in,out); input [7:0] in; output [3:0] out; reg i; reg [3:0] out; always @* begin for (i=0;i<7;i=i+1) begin if ((in[i]==1) && (in[7:i+1]==0)) out = i; else out = 0; end end endmodule I think it complains about in[7:i+1] but i don't understand why ? Can someone please advise.. EDIT ok so I am reluctant to using the X due to their numerous problems.. I was thinking of modifying the code to something like

问题 Is it possible to use two Android MediaCodec instances as video encoder to encode two videos simultaneously? I know that MediaCodec itself can have multiple instances, for video/audio encoding/decoding. But is there any restriction on hardware/Android version on encoding multiple videos, besides the impact of performance? More specifically, if considering only Android version 4.3 or higher, is multiple instances of video encoder valid or still be device-dependent? 回答1: From my experience it

问题 Preambule: This may sound like a very specific question, but this is actually a go / no go to build an API 16+ Android application using MediaCodec that is compatible with most phone. I have an application with a h.264 MediaCodec that receives data from a buffer - and not a surface since I'm doing a lot of manipulations on the image. When creating the Encoder , I iterate through the list of possible encoders from the phone to make sure I'm using a proprietary encoder if any. This part is not

问题 I encode an HD video (Beauty.yuv) by JM with IBBBPBBBPBBBP... pattern. then to convert output.264 to out.mp4 by MP4Box do this: MP4Box -profile high -hint -mtu 1024 -fps 30 -add output.264 out.mp4 then I make .st file: ./mp4trace -f -s 192.168.0.2 12346 out.mp4 > st_a01.st but my st file look like: 1 I 142647 140 0.075 2 P 82493 81 0.202 3 P 24373 24 0.204 4 P 29224 29 0.204 5 P 23495 23 0.204 6 P 76393 75 0.331 7 P 22832 23 0.331 8 P 25367 25 0.336 9 P 22635 23 0.336 10 P 120039 118 0.469 11

问题 I want to convert a given flac file to a wav file. Most of the questions on StackOverflow are the opposite of my question. Have anyone an idea how to solve this problem ? I heard something about JavaFlacEncoder link but I could not find a method to convert flac to wave. 回答1: Use flac -d to (from the man page) Decode (the default behavior is to encode) Another option would be the JustFLAC library, again you need to decode from FLAC. WAV is uncompressed audio. 来源： https://stackoverflow.com