Score of 0

0 answers

397 views

avcodec_send_frame constantly returns -22

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 ...

Score of 1

1 answer

110 views

AAC from HLS TS causes clicks when decoded to PCM per segment

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. ❗ ...

Score of 3

1 answer

242 views

[ffmpeg]How to use libfdk_aac to encode pcm to constant bitrate

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: #...

Score of 1

0 answers

119 views

Read sample encrypted AAC with FFmpeg

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(&...

Score of 0

1 answer

78 views

How to encode audio AAC in HE-AAC V1 in new android API 33

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/...

Score of 3

1 answer

89 views

Android AudioVideo Framework can not read metadata correctly

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 ...

Score of -2

1 answer

106 views

GStreamer tool mp4 aac streaming via rtp

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 ! ...

Score of 2

1 answer

319 views

How to use Android MediaCodec to decode an aac audio file

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. ...

Score of -1

1 answer

320 views

Possible to copy PCR/PTS/DTS data between TS files?

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 ...