[FFmpeg-devel] ffmpeg using MediaCodec, avcodec_open2 says error code:-1 (0xffffffff) text: “Operation not permitted”

[Matthieu Bouron]

On Thu, May 11, 2017 at 08:10:37AM +0000, Miguel del Amor wrote:
> 
> Qt version: 5.7.1
> ffmpeg version: n3.3
> Android version: 5.1.1 ( but I've tried on some different devices )
> 
> I'm trying to use the Android API MediaCoded that have been supported by ffmpeg but while I try to open the codec I got "Operation not permitted" all times, I've tried some changes and I've tried to find examples without not luck.
> 
> This is what I'm doing
> 
> av_jni_set_java_vm(QAndroidJniEnvironment::javaVM(), NULL);
> 
> av_register_all();
> avcodec_register_all();
> 
> AVCodec *_codec(nullptr);
> AVCodecContext *_codecContext(nullptr);
> 
> if (_codec == nullptr)
>     _codec = avcodec_find_decoder_by_name("h264_mediacodec");
> 
> if (_codecContext == nullptr)
>     _codecContext = avcodec_alloc_context3(_codec);
> 
> int ret = 0;
> if( (ret = avcodec_open2(_codecContext, _codec, NULL)) < 0 ) {
> 
>     char str[AV_ERROR_MAX_STRING_SIZE];
>     memset(str, 0, sizeof(str));
>     av_strerror(ret, str, sizeof(str));
> 
>     qDebug("avcodec_open2 \"%s\" error[code:%d text:\"%s\"]",_codec->long_name, ret, str);
> }
> 
> 
> And I'm getting this output
> 
> avcodec_open2 "H.264 Android MediaCodec decoder" error[code:-1 text:"Operation not permitted"]
> 
> 
> What I'm doing wrong?
> 

This is the wrong mailing list, libavcodec user questions
belong to the libav-user mailing list:
http://ffmpeg.org/contact.html

Note: h264_mediacodec requires AVCodecContext.extradata to be set.

Matthieu

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