Adaptive Streaming Server dengan FFMPEG dan Golang

Abstract

Quality of experience (QoE) when accessing video streaming becomes a challenge in varieties of network bandwidth/speed. Adaptive streaming becomes an answer to gain good QoE. An architecture system of the adaptive streaming server with Dynamic Adaptive Streaming over HTTP (DASH) was proposed. The system was consists of two services e.g transcoding and streaming. Transcoding service encodes an audio file, multi-bitrates video files, and manifest.mpd files. Streaming service serves client streaming requests that appropriate to client network profiles. The system is built using the Golang programming environment and FFMPEG. Transcoding service has some execution mode (serial and concurrent) and passing mode (1 pass and 2 passes). The transcoding service test results show that concurrent execution is faster 11,5% than the serial execution and transcoding using 1 pass is faster 46,95% than 2 passes but the bitrate of output video lower than the determinate bitrate parameter. The streaming service has a good QoE. In the 5 scenarios, buffer level=0 happens 5 times, and its total duration is 64 seconds. Buffer level=0 happens when extreme changes happen in network speed from fast to too slow.

Construction of College Physical Education Network-assisted Teaching Platform under the Background of Internet Plus Education

“…After receiving the audio and video digital signals, the encoder FFmpeg will convert the audio and video digital signals into streams according to AAC audio compression coding algorithm and H.264 video compression coding algorithm respectively, and package them in MPEG2-TS and FLV formats respectively to improve the storage and transmission efficiency of files. [6] After the data stream is transmitted to the streaming media server according to the RTMP transmission protocol, it will be transcoded in real time, that is, different algorithms will be used to adjust the code rate of audio and video files to ensure normal playback under different network conditions and different client devices.…”

Mapreduce dalam Layanan Transcoding

“…Dari implementasi yang telah dilakukan tersebut, belum ditemui layanan transcoding dengan konsep Mapreduce yang memanfaatkan FFMPEG library, Remote Procedure Call (RPC) dan Secure Copy (SCP) dalam lingkungan pemrograman Golang. FFMPEG library digunakan untuk meng-convert data audio video dan library ini mampu dijalankan pada sistem operasi personal komputer yang berbeda (Kristiadi and Marwiyati, 2021;Jain, Shrivastava and Moghe, 2020). Komunikasi antar masterworker menggunakan RPC.…”