#11676: Broken video decoding on Android TV boxes with MediaCodec
-------------------------------------+-------------------------------------
Reporter: bl1nch | Owner: (none)
Type: defect | Status: new
Priority: critical | Component: ffmpeg
Version: 7.1 | Resolution:
Keywords: amlogic | Blocked By:
mediacodec hwaccel |
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Changes (by bl1nch):
* keywords: => amlogic mediacodec hwaccel
Old description:
> Hello ffmpeg developers. I faced the problem of broken hardware video
> decoding on Android TV boxes with CPU Amlogic s905w2 and GPU Mali-G31
> using MediaCodec. This problem occurs when using any player based on
> ffmpeg. I tested it with libmpv(https://github.com/mpv-player/mpv) and
> libmdk(https://github.com/wang-bin/mdk-sdk). I also tested with plugins
> for Flutter based on these video players (since I am a developer on the
> Flet(Flutter) framework). In some cases I get video with lags and in some
> strange green frames. I can give you a video
> [https://drive.google.com/drive/folders/1N-
> qdj5BSxp9pW1nNzYGaPzoOjVokgyHs?usp=sharing sample] with which you can
> reproduce the error. I also talked to the developers of the MPV player
> and they confirmed that this is a bug on the part of ffmpeg
> (https://github.com/mpv-android/mpv-android/issues/1088). I can also
> assume that this is really the case because I see exactly the same error
> in the logs and the same video output when using MDK.
> You can also see additional information here (https://github.com/media-
> kit/media-kit/issues/614), including an example of a green frame of the
> video output.
>
> I can't reproduce this error by calling ffmpeg from the command line
> because it happens on an Android TV box.
> The simplest thing I can offer from myself to reproduce this error is to
> build a Flutter application using any of the players (for example MDK,
> i.e. the fvp library (https://pub.dev/packages/fvp)). For this you can
> simply use the example code
> (https://pub.dev/packages/video_player#example) and substitute my video
> sample there.
>
> Please pay attention to this problem. I have not been able to figure this
> out for a year and now I have found out that this is a problem with
> ffmpeg. I am not the only one experiencing this problem and it makes it
> impossible to use any player built on ffmpeg on a huge number of Android
> TV boxes.
New description:
Hello ffmpeg developers. I faced the problem of broken hardware video
decoding on Android TV boxes with CPU Amlogic s905w2 and GPU Mali-G31
using MediaCodec. This problem occurs when using any player based on
ffmpeg. I tested it with libmpv(https://github.com/mpv-player/mpv) and
libmdk(https://github.com/wang-bin/mdk-sdk). I also tested with plugins
for Flutter based on these video players (since I am a developer on the
Flet(Flutter) framework). In some cases I get video with lags and in some
strange green frames. I can give you a video
[https://drive.google.com/drive/folders/19eGNKpI2R6fWPYPN0dtS-iQvwNcNcR2u
sample] with which you can reproduce the error. I also talked to the
developers of the MPV player and they confirmed that this is a bug on the
part of ffmpeg (https://github.com/mpv-android/mpv-android/issues/1088). I
can also assume that this is really the case because I see exactly the
same error in the logs and the same video output when using MDK.
You can also see additional information here (https://github.com/media-kit
/media-kit/issues/614), including an example of a green frame of the video
output.
I can't reproduce this error by calling ffmpeg from the command line
because it happens on an Android TV box.
The simplest thing I can offer from myself to reproduce this error is to
build a Flutter application using any of the players (for example MDK,
i.e. the fvp library (https://pub.dev/packages/fvp)). For this you can
simply use the example code
(https://pub.dev/packages/video_player#example) and substitute my video
sample there.
Please pay attention to this problem. I have not been able to figure this
out for a year and now I have found out that this is a problem with
ffmpeg. I am not the only one experiencing this problem and it makes it
impossible to use any player built on ffmpeg on a huge number of Android
TV boxes.
--
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11676#comment:3>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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