Hi, you can check if pixel format ever changes between frames. Once up a time I also had a crash problem, which I later found is caused by pixel format change.
2013/5/19 yy-zed <[email protected]> > Hi Guys, > > I'm trying to figure out to cause of constant crashes on sws_scale calls. > I'm reading in a video frame, decoding it, then trying to scale, encode and > write to video. Reading the frame and decoding it seem to be working fine, > but sws_scale keeps crashing. > > Here's where I set the context: > > > p_codec_ctx > > =p_in_video_ctx->p_fmt_ctx->streams[p_in_video_ctx->i_video_stream_idx]->codec; > > p_out_video_ctx->p_sws_ctx = sws_getContext(p_codec_ctx->width, > p_codec_ctx->height, p_codec_ctx->pix_fmt, > p_out_video_ctx->i_vwidth, p_out_video_ctx->i_vheight, > AV_PIX_FMT_YUV420P, SWS_BICUBIC, NULL, NULL, NULL); > > and here's where I make the call to scale the frame: > > debugLogR->debug("here1"); > sws_scale(p_out_video_ctx->p_sws_ctx, > (uint8_t const * const *) > p_in_video_ctx->p_video_frame->data, > p_in_video_ctx->p_video_frame->linesize, 0, > p_codec_ctx->height, > p_out_video_ctx->p_video_frame->data, > p_out_video_ctx->p_video_frame->linesize); > > debugLogR->debug("here2"); > > here1 is printed, but the program exits with error code "-1073741819" > before > printing here2. Google tells me thats a general access memory violation. > > Has anybody got any ideas where I'm going wrong? > > Thanks, > Sam > > > > > -- > View this message in context: > http://libav-users.943685.n4.nabble.com/sws-scale-crash-tp4657631.html > Sent from the libav-users mailing list archive at Nabble.com. > _______________________________________________ > Libav-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/libav-user >
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