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88 views

I am trying to write a WAV-to-AAC encoder using ffmpeg/libavcodec. Finding the encoder, setting up the context and feeding data into the frame all work, but once it's time to avcodec_send_frame() I ...
1 vote
1 answer
79 views

I'm working on a custom HLS audio player for iOS. Each .ts segment contains AAC audio. I extract AAC from each TS file, decode it to PCM (using FFmpegKit), and schedule it using AVAudioEngine. ❗ ...
3 votes
1 answer
180 views

I have tried both libfdk_aac and aac, but the encoded PCM audio always has a variable bit rate. Why is this happening? How can I make it encode with a constant bit rate The code is as follows: #...
qyt's user avatar
  • 73
1 vote
0 answers
77 views

I'm trying to open a sample encrypted AAC file (packed audio) using FFmpeg APIs. I can open an unencrypted AAC file using AVFormatContext* iContext = nullptr; avformat_open_input(&...
0 votes
1 answer
67 views

android api 33 add new fields in android.media.MediaFormat links: https://developer.android.com/sdk/api_diff/33/changes/android.media.MediaFormat https://developer.android.com/reference/android/media/...
0 votes
2 answers
230 views

AudioBufferList* convertPCMToAAC (XDXRecorder *recoder) { UInt32 maxPacketSize = 0; UInt32 size = sizeof(maxPacketSize); OSStatus status; status = AudioConverterGetProperty(...
3 votes
1 answer
72 views

I've been trying to open *.mp4 media file on specific Android devices. Once I open it MediaFormat data has undefined language on audio tracks. If I then upload same app on different device, it decodes ...
-2 votes
1 answer
97 views

I built an rtp sender that should transmit h264 video and aac audio, but it gives an error. No sink-element named "(null)" - omitting link gst-launch-1.0 -e -vv v4l2src device=/dev/video0 ! ...
R.A.'s user avatar
  • 1
1 vote
1 answer
1k views

When I run my demo code I get these warnings when testing it on a webm video: [opus @ 0x5ec0fc1b4580] Could not update timestamps for skipped samples. [opus @ 0x5ec0fc1b4580] Could not update ...
aabiji's user avatar
  • 13
2 votes
1 answer
293 views

I am using Android MediaCodec to decode an audio file formated in AAC.But the alway output a 0 bytes decodeFile. I have debuged my code, then i found outputBuffer?.remaining() ?: 0 always returns 0. ...
-1 votes
1 answer
281 views

I've 2 h264/aac stream TS files (say a.ts and b.ts) that have same duration and packet numbers. However PCR/PTS/DTS data of their audio/video stream packets are different. How do I copy PCR/PTS/DTS ...
muraliv's user avatar
  • 175
1 vote
1 answer
1k views

I have an audio editor in the browser using ffmpeg (WebAssembly), and I want to insert new audio into the existing audio without having to re-encode everything. Re-encoding everything takes a long ...
2 votes
2 answers
329 views

These are not present in the original audio files. They get added to the end during the video creation process somehow. See this screenshot for a before and after comparison of the waveforms: What's ...
king_anton's user avatar
1 vote
0 answers
282 views

I'm trying to decode aac to pcm data, my goal is to decode the acc data received by tcp into pcm data. Currently I want to convert local aac files to pcm data first, and I encounter a problem: [...
1 vote
0 answers
150 views

I am attempting to stream an .acc audio file using the MediaSource API in JavaScript. The problem I'm encountering is that after loading the first partial audio chunk into the media source buffer, the ...
niko's user avatar
  • 1,497

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