codec

问题 I need to create a reader from buffer(that is wav bytes ) in order to do it I am using such approach: void co_AudioEncoderMF::load_from_memory(unsigned char const * data, long data_size) { unsigned char * buf = new unsigned char[data_size]; //JUST FOR TEST IN ORDER TO BE SURE THAT I HAVE THIS DATA memcpy(buf, data, data_size); IMFMediaType *input_type = nullptr; IMFSourceReader *source_reader = nullptr; IMFMediaType *ouput_media_type = nullptr; IMFSinkWriter *sink_writer = nullptr; IStream *

问题 I need to create a reader from buffer(that is wav bytes ) in order to do it I am using such approach: void co_AudioEncoderMF::load_from_memory(unsigned char const * data, long data_size) { unsigned char * buf = new unsigned char[data_size]; //JUST FOR TEST IN ORDER TO BE SURE THAT I HAVE THIS DATA memcpy(buf, data, data_size); IMFMediaType *input_type = nullptr; IMFSourceReader *source_reader = nullptr; IMFMediaType *ouput_media_type = nullptr; IMFSinkWriter *sink_writer = nullptr; IStream *

问题 The bounty expires in 6 days . Answers to this question are eligible for a +50 reputation bounty. Aleksey Timoshchenko is looking for an answer from a reputable source . General idea is to get a IMFSinkWriter that will write a data to the buffer. There is such an implementation bool co_AudioEncoderMF::start_encoding_to() { bool result = false; co_Stream stream; IMFByteStream * byte_stream = nullptr; IMFMediaSink * media_sink = nullptr; IMFSinkWriter * sink_writer = nullptr; HRESULT hr =

问题 The bounty expires in 6 days . Answers to this question are eligible for a +50 reputation bounty. Aleksey Timoshchenko is looking for an answer from a reputable source . General idea is to get a IMFSinkWriter that will write a data to the buffer. There is such an implementation bool co_AudioEncoderMF::start_encoding_to() { bool result = false; co_Stream stream; IMFByteStream * byte_stream = nullptr; IMFMediaSink * media_sink = nullptr; IMFSinkWriter * sink_writer = nullptr; HRESULT hr =

问题 If I import a file to use with ffmpeg but dont specify anything about the codecs of any of the streams, will ffmpeg do anything? Is the default action to just copy the codecs? Or will ffmpeg encode the input file using some default codec? Would the following two commands be the same? Or will the second re-encode and take ages? ffmpeg -i input.mkv -c:v copy -c:a copy output.mp4 ffmpeg -i input.mkv output.mp4 回答1: If I import a file to use with ffmpeg but dont specify anything about the codecs

问题 If I import a file to use with ffmpeg but dont specify anything about the codecs of any of the streams, will ffmpeg do anything? Is the default action to just copy the codecs? Or will ffmpeg encode the input file using some default codec? Would the following two commands be the same? Or will the second re-encode and take ages? ffmpeg -i input.mkv -c:v copy -c:a copy output.mp4 ffmpeg -i input.mkv output.mp4 回答1: If I import a file to use with ffmpeg but dont specify anything about the codecs

问题 How can I get a MP4's codec information in JavaScript so that I can check if the browser supports it? const audioCodec = '';//<---?? exmaple: "mp4a.40.2" const videoCodec = '';//<---?? example: "avc1.42e01e" const video = document.getElementById('video'); const mimeCodec = 'video/mp4; codecs="' + audioCodec + ', ' + videoCodec + '"'; if (!('MediaSource' in window) || !MediaSource.isTypeSupported(mimeCodec)) { console.error('Unsupported MIME type or codec: ', mimeCodec); } 回答1: There is no

问题 How can I get a MP4's codec information in JavaScript so that I can check if the browser supports it? const audioCodec = '';//<---?? exmaple: "mp4a.40.2" const videoCodec = '';//<---?? example: "avc1.42e01e" const video = document.getElementById('video'); const mimeCodec = 'video/mp4; codecs="' + audioCodec + ', ' + videoCodec + '"'; if (!('MediaSource' in window) || !MediaSource.isTypeSupported(mimeCodec)) { console.error('Unsupported MIME type or codec: ', mimeCodec); } 回答1: There is no

问题 How can I get a MP4's codec information in JavaScript so that I can check if the browser supports it? const audioCodec = '';//<---?? exmaple: "mp4a.40.2" const videoCodec = '';//<---?? example: "avc1.42e01e" const video = document.getElementById('video'); const mimeCodec = 'video/mp4; codecs="' + audioCodec + ', ' + videoCodec + '"'; if (!('MediaSource' in window) || !MediaSource.isTypeSupported(mimeCodec)) { console.error('Unsupported MIME type or codec: ', mimeCodec); } 回答1: There is no

来源： https://stackoverflow.com/questions/59468095/unexpected-keyword-argument-codec-in-xmlconverter