Seek issue when rmvb file playing about androidffmpeg

[jacek-marchwicki]

Do this file play well on desktop ffplay?

[wind-walker]

Yes, I also try build FFmpegLibrary/jni/ffmpeg for win32, then play rmvb file using ffplay, it seek work fine.
ffplay dump media info as below:
[rm @ 01e40060] Unsupported stream type 00000170
Input #0, rm, from 'e:/__media/mov_bbb/mov_bbb.rmvb':
Metadata:
title :
author :
copyright :
comment :
Duration: 00:00:11.14, start: 0.000000, bitrate: 300 kb/s
Stream #0:0: Video: rv40 (RV40 / 0x30345652), yuv420p, 320x176, 218 kb/s, 25 fps, 25 tbr, 1k tbn, 1k tbc
Stream #0:1: Audio: cook (cook / 0x6B6F6F63), 44100 Hz, stereo, flt, 96 kb/s
Stream #0:2: Data: none

[wind-walker]

Update my verification, ffplay seek rmvb file forward also dump one error log,
[rv40 @ 01ea8780] Invalid decoder state: B-frame without reference data.
But ffplay play continue not stop.

[jacek-marchwicki]

Hmm.. its hard to say what exactly problem is. I can guess that there after seeking is assume that correct frame will be read but I should skip some B-frames until receive I-frame before trying decode. Maybe you can investigate this problem more precisely?

[wind-walker]

I read theget_video_frame()function of ffplay.c about video decoding.

    if(avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt) < 0)
        return 0; // video thread would continue to work

Maybe one solution(or workaround) to modify player_decode_video()

    int ret = avcodec_decode_video2(ctx, frame, &frameFinished, packet);
            :
    if (ret < 0) {
        LOGE(1, "player_decode_video Fail decoding video %d\n", ret);
        return 0; /// -ERROR_WHILE_DECODING_VIDEO;
    }

Return zero continue to decode video, it will play continue not stop.

[jacek-marchwicki]

Did you tried this solution?

[wind-walker]

Yes, it play continue not stop.