Re: [FFmpeg-devel] avcodec/aacenc: Compatibility with Bluetooth A2DP headsets
On Fri, Jan 3, 2020 at 9:24 AM Andrey Semashev wrote: > > On 2020-01-03 09:14, Kieran Kunhya wrote: > >> > >>> Thanks. > >> > >> Ping? > >> > > > > Have you tried using our LATM mux? > > No, I'm trying to avoid libavformat dependency. I'm sure my LATM code is > fine because it works with libfdk-aac. No harm in testing to confirm. - Hendrik ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-devel] avcodec/aacenc: Compatibility with Bluetooth A2DP headsets
On 2020-01-03 09:14, Kieran Kunhya wrote: Thanks. Ping? Have you tried using our LATM mux? No, I'm trying to avoid libavformat dependency. I'm sure my LATM code is fine because it works with libfdk-aac. ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-devel] avcodec/aacenc: Compatibility with Bluetooth A2DP headsets
> > > Thanks. > > Ping? > Have you tried using our LATM mux? Kieran ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-devel] avcodec/aacenc: Compatibility with Bluetooth A2DP headsets
On 2019-12-24 01:57, Andrey Semashev wrote: Hi, I'm trying to add support for AAC to PulseAudio with regard to Bluetooth A2DP. I'm using libavcodec to encode AAC content and then packetize it into RTP MP4-LATM packets, as required by A2DP spec. My current implementation allows to switch between libfdk-aac and built-in AAC encoder backends. With libfdk-aac, everything's working well, the encoded audio is correctly played by the BT headset (EOZ Air). But with the built-in encoder I can hear occasional audio drop outs and artefacts like clicks and weird stereo effects. I'm assuming this is because some decoding errors on the headset, but obviously I don't have any kind of debug info from it. When the same content is played (e.g. the same song) on different runs, the artefacts appear at roughly the same places, so I'm assuming that the problem is input content-related. Given that libfdk-aac output is played without artefacts by the device, I'm assuming my packetization code is correct. I also tried to debug and analyze its output and didn't find anything out of order. This makes me believe the problem is in the built-in encoder. How should I proceed about this problem? What kind of information would be useful to the aacenc developer(s) to debug this? Is there any information as to how conforming aacenc is to the AAC spec and other, especially hardware implementations? For a start, here is my code: https://gitlab.freedesktop.org/andrey.semashev/pulseaudio/blob/a2dp-codecs-aac/src/modules/bluetooth/a2dp-codec-aac.c libavcodec encoder context initialization is at: https://gitlab.freedesktop.org/andrey.semashev/pulseaudio/blob/a2dp-codecs-aac/src/modules/bluetooth/a2dp-codec-aac.c#L685 Thanks. Ping? ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
[FFmpeg-devel] avcodec/aacenc: Compatibility with Bluetooth A2DP headsets
Hi, I'm trying to add support for AAC to PulseAudio with regard to Bluetooth A2DP. I'm using libavcodec to encode AAC content and then packetize it into RTP MP4-LATM packets, as required by A2DP spec. My current implementation allows to switch between libfdk-aac and built-in AAC encoder backends. With libfdk-aac, everything's working well, the encoded audio is correctly played by the BT headset (EOZ Air). But with the built-in encoder I can hear occasional audio drop outs and artefacts like clicks and weird stereo effects. I'm assuming this is because some decoding errors on the headset, but obviously I don't have any kind of debug info from it. When the same content is played (e.g. the same song) on different runs, the artefacts appear at roughly the same places, so I'm assuming that the problem is input content-related. Given that libfdk-aac output is played without artefacts by the device, I'm assuming my packetization code is correct. I also tried to debug and analyze its output and didn't find anything out of order. This makes me believe the problem is in the built-in encoder. How should I proceed about this problem? What kind of information would be useful to the aacenc developer(s) to debug this? Is there any information as to how conforming aacenc is to the AAC spec and other, especially hardware implementations? For a start, here is my code: https://gitlab.freedesktop.org/andrey.semashev/pulseaudio/blob/a2dp-codecs-aac/src/modules/bluetooth/a2dp-codec-aac.c libavcodec encoder context initialization is at: https://gitlab.freedesktop.org/andrey.semashev/pulseaudio/blob/a2dp-codecs-aac/src/modules/bluetooth/a2dp-codec-aac.c#L685 Thanks. ___ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
