ffmpeg: stop accessing deprecated stream-embedded codec context

fftools/ffmpeg.c

@@ -3568,12 +3568,6 @@ static int init_output_stream(OutputStream *ost, AVFrame *frame,
                    "Error initializing the output stream codec context.\n");
             exit_program(1);
         }
-        /*
-         * FIXME: ost->st->codec should't be needed here anymore.
-         */
-        ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
-        if (ret < 0)
-            return ret;
 
         if (ost->enc_ctx->nb_coded_side_data) {
             int i;
@@ -3618,8 +3612,6 @@ static int init_output_stream(OutputStream *ost, AVFrame *frame,
         // copy estimated duration as a hint to the muxer
         if (ost->st->duration <= 0 && ist && ist->st->duration > 0)
             ost->st->duration = av_rescale_q(ist->st->duration, ist->st->time_base, ost->st->time_base);
-
-        ost->st->codec->codec= ost->enc_ctx->codec;
     } else if (ost->stream_copy) {
         ret = init_output_stream_streamcopy(ost);
         if (ret < 0)
@@ -4011,7 +4003,7 @@ static int check_keyboard_interaction(int64_t cur_time)
     if (key == 'd' || key == 'D'){
         int debug=0;
         if(key == 'D') {
-            debug = input_streams[0]->st->codec->debug<<1;
+            debug = input_streams[0]->dec_ctx->debug << 1;
             if(!debug) debug = 1;
             while(debug & (FF_DEBUG_DCT_COEFF
 #if FF_API_DEBUG_MV
@@ -4034,7 +4026,7 @@ static int check_keyboard_interaction(int64_t cur_time)
                 fprintf(stderr,"error parsing debug value\n");
         }
         for(i=0;i<nb_input_streams;i++) {
-            input_streams[i]->st->codec->debug = debug;
+            input_streams[i]->dec_ctx->debug = debug;
         }
         for(i=0;i<nb_output_streams;i++) {
             OutputStream *ost = output_streams[i];