@@ -483,6 +483,8 @@ static void ffmpeg_cleanup(int ret)

         av_freep(&ost->avfilter);

         av_freep(&ost->logfile_prefix);

+        avcodec_free_context(&ost->enc_ctx);

+

         av_freep(&output_streams[i]);

     }

 #if HAVE_PTHREADS

@@ -573,7 +575,7 @@ static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream,

 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)

 {

     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;

-    AVCodecContext          *avctx = ost->st->codec;

+    AVCodecContext          *avctx = ost->enc_ctx;

     int ret;

     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||

@@ -698,7 +700,7 @@ static int check_recording_time(OutputStream *ost)

     OutputFile *of = output_files[ost->file_index];

     if (of->recording_time != INT64_MAX &&

-        av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,

+        av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,

                       AV_TIME_BASE_Q) >= 0) {

         close_output_stream(ost);

         return 0;

@@ -709,7 +711,7 @@ static int check_recording_time(OutputStream *ost)

 static void do_audio_out(AVFormatContext *s, OutputStream *ost,

                          AVFrame *frame)

 {

-    AVCodecContext *enc = ost->st->codec;

+    AVCodecContext *enc = ost->enc_ctx;

     AVPacket pkt;

     int got_packet = 0;

@@ -778,7 +780,7 @@ static void do_subtitle_out(AVFormatContext *s,

         return;

     }

-    enc = ost->st->codec;

+    enc = ost->enc_ctx;

     if (!subtitle_out) {

         subtitle_out = av_malloc(subtitle_out_max_size);

@@ -842,7 +844,7 @@ static void do_video_out(AVFormatContext *s,

 {

     int ret, format_video_sync;

     AVPacket pkt;

-    AVCodecContext *enc = ost->st->codec;

+    AVCodecContext *enc = ost->enc_ctx;

     int nb_frames, i;

     double sync_ipts, delta;

     double duration = 0;

@@ -959,7 +961,7 @@ static void do_video_out(AVFormatContext *s,

         int got_packet, forced_keyframe = 0;

         double pts_time;

-        if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&

+        if (enc->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&

             ost->top_field_first >= 0)

             in_picture->top_field_first = !!ost->top_field_first;

@@ -971,7 +973,7 @@ static void do_video_out(AVFormatContext *s,

         } else

             enc->field_order = AV_FIELD_PROGRESSIVE;

-        in_picture->quality = ost->st->codec->global_quality;

+        in_picture->quality = enc->global_quality;

         if (!enc->me_threshold)

             in_picture->pict_type = 0;

@@ -1092,7 +1094,7 @@ static void do_video_stats(OutputStream *ost, int frame_size)

         }

     }

-    enc = ost->st->codec;

+    enc = ost->enc_ctx;

     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {

         frame_number = ost->st->nb_frames;

         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);

@@ -1130,7 +1132,7 @@ static int reap_filters(void)

         OutputStream *ost = output_streams[i];

         OutputFile    *of = output_files[ost->file_index];

         AVFilterContext *filter;

-        AVCodecContext *enc = ost->st->codec;

+        AVCodecContext *enc = ost->enc_ctx;

         int ret = 0;

         if (!ost->filter)

@@ -1212,13 +1214,13 @@ static void print_final_stats(int64_t total_size)

     for (i = 0; i < nb_output_streams; i++) {

         OutputStream *ost = output_streams[i];

-        switch (ost->st->codec->codec_type) {

+        switch (ost->enc_ctx->codec_type) {

             case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;

             case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;

             case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;

             default:                 other_size += ost->data_size; break;

         }

-        extra_size += ost->st->codec->extradata_size;

+        extra_size += ost->enc_ctx->extradata_size;

         data_size  += ost->data_size;

     }

@@ -1282,7 +1284,7 @@ static void print_final_stats(int64_t total_size)

         for (j = 0; j < of->ctx->nb_streams; j++) {

             OutputStream *ost = output_streams[of->ost_index + j];

-            enum AVMediaType type = ost->st->codec->codec_type;

+            enum AVMediaType type = ost->enc_ctx->codec_type;

             total_size    += ost->data_size;

             total_packets += ost->packets_written;

@@ -1352,7 +1354,7 @@ static void print_report(int is_last_report, int64_t timer_start, int64_t cur_ti

     for (i = 0; i < nb_output_streams; i++) {

         float q = -1;

         ost = output_streams[i];

-        enc = ost->st->codec;

+        enc = ost->enc_ctx;

         if (!ost->stream_copy && enc->coded_frame)

             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;

         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {

@@ -1482,23 +1484,23 @@ static void flush_encoders(void)

     for (i = 0; i < nb_output_streams; i++) {

         OutputStream   *ost = output_streams[i];

-        AVCodecContext *enc = ost->st->codec;

+        AVCodecContext *enc = ost->enc_ctx;

         AVFormatContext *os = output_files[ost->file_index]->ctx;

         int stop_encoding = 0;

         if (!ost->encoding_needed)

             continue;

-        if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)

+        if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)

             continue;

-        if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)

+        if (enc->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)

             continue;

         for (;;) {

             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;

             const char *desc;

-            switch (ost->st->codec->codec_type) {

+            switch (enc->codec_type) {

             case AVMEDIA_TYPE_AUDIO:

                 encode = avcodec_encode_audio2;

                 desc   = "Audio";

@@ -1619,7 +1621,7 @@ static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *p

     }

     /* force the input stream PTS */

-    if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)

+    if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)

         ost->sync_opts++;

     if (pkt->pts != AV_NOPTS_VALUE)

@@ -1646,10 +1648,10 @@ static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *p

     opkt.flags    = pkt->flags;

     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters

-    if (  ost->st->codec->codec_id != AV_CODEC_ID_H264

-       && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO

-       && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO

-       && ost->st->codec->codec_id != AV_CODEC_ID_VC1

+    if (  ost->enc_ctx->codec_id != AV_CODEC_ID_H264

+       && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG1VIDEO

+       && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG2VIDEO

+       && ost->enc_ctx->codec_id != AV_CODEC_ID_VC1

        ) {

         if (av_parser_change(ost->parser, ost->st->codec,

                              &opkt.data, &opkt.size,

@@ -1791,7 +1793,7 @@ static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)

                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&

                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))

                         av_buffersink_set_frame_size(ost->filter->filter,

-                                                     ost->st->codec->frame_size);

+                                                     ost->enc_ctx->frame_size);

                 }

             }

     }

@@ -2462,7 +2464,7 @@ static int transcode_init(void)

         if (ost->attachment_filename)

             continue;

-        enc_ctx = ost->st->codec;

+        enc_ctx = ost->enc_ctx;

         if (ist) {

             dec_ctx = ist->dec_ctx;

@@ -2739,7 +2741,7 @@ static int transcode_init(void)

                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;

                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;

                     } else {

-                        parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);

+                        parse_forced_key_frames(ost->forced_keyframes, ost, ost->enc_ctx);

                     }

                 }

                 break;

@@ -2801,17 +2803,19 @@ static int transcode_init(void)

                 dec = ist->dec_ctx;

             if (dec && dec->subtitle_header) {

                 /* ASS code assumes this buffer is null terminated so add extra byte. */

-                ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);

-                if (!ost->st->codec->subtitle_header) {

+                ost->enc_ctx->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);

+                if (!ost->enc_ctx->subtitle_header) {

                     ret = AVERROR(ENOMEM);

                     goto dump_format;

                 }

-                memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);

-                ost->st->codec->subtitle_header_size = dec->subtitle_header_size;

+                memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);

+                ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;

             }

             if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))

                 av_dict_set(&ost->encoder_opts, "threads", "auto", 0);

-            if ((ret = avcodec_open2(ost->st->codec, codec, &ost->encoder_opts)) < 0) {

+            av_dict_set(&ost->encoder_opts, "side_data_only_packets", "1", 0);

+

+            if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {

                 if (ret == AVERROR_EXPERIMENTAL)

                     abort_codec_experimental(codec, 1);

                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",

@@ -2821,13 +2825,20 @@ static int transcode_init(void)

             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&

                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))

                 av_buffersink_set_frame_size(ost->filter->filter,

-                                             ost->st->codec->frame_size);

+                                             ost->enc_ctx->frame_size);

             assert_avoptions(ost->encoder_opts);

-            if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)

+            if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)

                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."

                                              " It takes bits/s as argument, not kbits/s\n");

         } else {

-            av_opt_set_dict(ost->st->codec, &ost->encoder_opts);

+            av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts);

+        }

+

+        ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);

+        if (ret < 0) {

+            av_log(NULL, AV_LOG_FATAL,

+                   "Error initializing the output stream codec context.\n");

+            exit_program(1);

         }

     }

@@ -2836,7 +2847,7 @@ static int transcode_init(void)

         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {

             for (i = 0; i < nb_output_streams; i++) {

                 ost = output_streams[i];

-                avcodec_close(ost->st->codec);

+                avcodec_close(ost->enc_ctx);

             }

             goto dump_format;

         }

@@ -3618,8 +3629,7 @@ static int transcode(void)

     for (i = 0; i < nb_output_streams; i++) {

         ost = output_streams[i];

         if (ost->encoding_needed) {

-            av_freep(&ost->st->codec->stats_in);

-            avcodec_close(ost->st->codec);

+            av_freep(&ost->enc_ctx->stats_in);

         }

     }

@@ -3645,13 +3655,10 @@ static int transcode(void)

         for (i = 0; i < nb_output_streams; i++) {

             ost = output_streams[i];

             if (ost) {

-                if (ost->stream_copy)

-                    av_freep(&ost->st->codec->extradata);

                 if (ost->logfile) {

                     fclose(ost->logfile);

                     ost->logfile = NULL;

                 }

-                av_freep(&ost->st->codec->subtitle_header);

                 av_freep(&ost->forced_kf_pts);

                 av_freep(&ost->apad);

                 av_dict_free(&ost->encoder_opts);

@@ -378,6 +378,7 @@ typedef struct OutputStream {

     /* dts of the last packet sent to the muxer */

     int64_t last_mux_dts;

     AVBitStreamFilterContext *bitstream_filters;

+    AVCodecContext *enc_ctx;

     AVCodec *enc;

     int64_t max_frames;

     AVFrame *filtered_frame;

@@ -149,8 +149,8 @@ static char *choose_pix_fmts(OutputStream *ost)

 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name)           \

 static char *choose_ ## var ## s(OutputStream *ost)                            \

 {                                                                              \

-    if (ost->st->codec->var != none) {                                         \

-        get_name(ost->st->codec->var);                                         \

+    if (ost->enc_ctx->var != none) {                                           \

+        get_name(ost->enc_ctx->var);                                           \

         return av_strdup(name);                                                \

     } else if (ost->enc && ost->enc->supported_list) {                         \

         const type *p;                                                         \

@@ -344,7 +344,7 @@ static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter,

     char *pix_fmts;

     OutputStream *ost = ofilter->ost;

     OutputFile    *of = output_files[ost->file_index];

-    AVCodecContext *codec = ost->st->codec;

+    AVCodecContext *codec = ost->enc_ctx;

     AVFilterContext *last_filter = out->filter_ctx;

     int pad_idx = out->pad_idx;

     int ret;

@@ -434,7 +434,7 @@ static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter,

 {

     OutputStream *ost = ofilter->ost;

     OutputFile    *of = output_files[ost->file_index];

-    AVCodecContext *codec  = ost->st->codec;

+    AVCodecContext *codec  = ost->enc_ctx;

     AVFilterContext *last_filter = out->filter_ctx;

     int pad_idx = out->pad_idx;

     char *sample_fmts, *sample_rates, *channel_layouts;

@@ -1065,6 +1065,14 @@ static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, e

     ost->st         = st;

     st->codec->codec_type = type;

     choose_encoder(o, oc, ost);

+

+    ost->enc_ctx = avcodec_alloc_context3(ost->enc);

+    if (!ost->enc_ctx) {

+        av_log(NULL, AV_LOG_ERROR, "Error allocating the encoding context.\n");

+        exit_program(1);

+    }

+    ost->enc_ctx->codec_type = type;

+

     if (ost->enc) {

         AVIOContext *s = NULL;

         char *buf = NULL, *arg = NULL, *preset = NULL;

@@ -1099,9 +1107,6 @@ static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, e

         ost->encoder_opts = filter_codec_opts(o->g->codec_opts, AV_CODEC_ID_NONE, oc, st, NULL);

     }

-    avcodec_get_context_defaults3(st->codec, ost->enc);

-    st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy

-

     ost->max_frames = INT64_MAX;

     MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);

     for (i = 0; i<o->nb_max_frames; i++) {

@@ -1137,17 +1142,17 @@ static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, e

         uint32_t tag = strtol(codec_tag, &next, 0);

         if (*next)

             tag = AV_RL32(codec_tag);

-        st->codec->codec_tag = tag;

+        ost->enc_ctx->codec_tag = tag;

     }

     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);

     if (qscale >= 0) {

-        st->codec->flags |= CODEC_FLAG_QSCALE;

-        st->codec->global_quality = FF_QP2LAMBDA * qscale;

+        ost->enc_ctx->flags |= CODEC_FLAG_QSCALE;

+        ost->enc_ctx->global_quality = FF_QP2LAMBDA * qscale;

     }

     if (oc->oformat->flags & AVFMT_GLOBALHEADER)

-        st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;

+        ost->enc_ctx->flags |= CODEC_FLAG_GLOBAL_HEADER;

     av_opt_get_int(o->g->sws_opts, "sws_flags", 0, &ost->sws_flags);

@@ -1257,7 +1262,7 @@ static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc, in

     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO, source_index);

     st  = ost->st;

-    video_enc = st->codec;

+    video_enc = ost->enc_ctx;

     MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);

     if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {

@@ -1418,7 +1423,7 @@ static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc, in

     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO, source_index);

     st  = ost->st;

-    audio_enc = st->codec;

+    audio_enc = ost->enc_ctx;

     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;

     MATCH_PER_STREAM_OPT(filter_scripts, str, ost->filters_script, oc, st);

@@ -1508,7 +1513,7 @@ static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc,

     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE, source_index);

     st  = ost->st;

-    subtitle_enc = st->codec;

+    subtitle_enc = ost->enc_ctx;

     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;