[FFmpeg-devel] [PATCH] avfilter: Enable in MP4 container both AMR-NB and AMR-WB
bkirnum at gmail.com
Thu May 18 00:26:00 EEST 2017
Did not realize the files I shared were too large. I copied them to a
shared Google Drive here . . .
On Wed, May 17, 2017 at 3:30 PM, Bob Kirnum <bkirnum at gmail.com> wrote:
> Sorry for the delay. Attached are two examples. Both files play on
> Windows 10 using the 'Movies & TV' app, only the AMR-NB file has audio.
> Both play fine using VLC with audio.
> On Wed, May 17, 2017 at 9:23 AM, Carl Eugen Hoyos <ceffmpeg at gmail.com>
>> 2017-05-17 14:27 GMT+02:00 Hendrik Leppkes <h.leppkes at gmail.com>:
>> > On Wed, May 17, 2017 at 2:05 PM, Bob Kirnum <bkirnum at gmail.com> wrote:
>> >> Backwards compatibility tested running complete FATE testing.
>> >> Our media server can record to and play from MP4 containing H.264 and
>> / or
>> >> AMR-NB / WB. The codecs are proprietary implementations. We use
>> >> libavformat for MP4 containers. The recorded containers can be played
>> >> using third party tools (open source implementations).
>> > So are you saying that there is no official specification for AMR in
>> > MP4, and these files are only compatible with your proprietary
>> > software?
>> It says here (afaict) that such a specification exists:
>> I thought that demuxing should already be supported and
>> that muxing may need specific atoms.
>> Carl Eugen
>> ffmpeg-devel mailing list
>> ffmpeg-devel at ffmpeg.org
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