diff --git a/libobs/graphics/graphics-ffmpeg.c b/libobs/graphics/graphics-ffmpeg.c
index eb2467ecc..6db73ad58 100644
--- a/libobs/graphics/graphics-ffmpeg.c
+++ b/libobs/graphics/graphics-ffmpeg.c
@@ -11,9 +11,6 @@ struct ffmpeg_image {
 	const char *file;
 	AVFormatContext *fmt_ctx;
 	AVCodecContext *decoder_ctx;
-	AVCodec *decoder;
-	AVStream *stream;
-	int stream_idx;
 
 	int cx, cy;
 	enum AVPixelFormat format;
@@ -21,26 +18,46 @@ struct ffmpeg_image {
 
 static bool ffmpeg_image_open_decoder_context(struct ffmpeg_image *info)
 {
-	int ret = av_find_best_stream(info->fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, 1,
-				      NULL, 0);
+	AVFormatContext *const fmt_ctx = info->fmt_ctx;
+	int ret = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, 1, NULL,
+				      0);
 	if (ret < 0) {
 		blog(LOG_WARNING, "Couldn't find video stream in file '%s': %s",
 		     info->file, av_err2str(ret));
 		return false;
 	}
 
-	info->stream_idx = ret;
-	info->stream = info->fmt_ctx->streams[ret];
-	info->decoder_ctx = info->stream->codec;
-	info->decoder = avcodec_find_decoder(info->decoder_ctx->codec_id);
-
-	if (!info->decoder) {
+	AVStream *const stream = fmt_ctx->streams[ret];
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 48, 101)
+	AVCodecParameters *const codecpar = stream->codecpar;
+	AVCodec *const decoder = avcodec_find_decoder(codecpar->codec_id);
+#else
+	AVCodecContext *const decoder_ctx = stream->codec;
+	AVCodec *const decoder = avcodec_find_decoder(decoder_ctx->codec_id);
+#endif
+	if (!decoder) {
 		blog(LOG_WARNING, "Failed to find decoder for file '%s'",
 		     info->file);
 		return false;
 	}
 
-	ret = avcodec_open2(info->decoder_ctx, info->decoder, NULL);
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 48, 101)
+	AVCodecContext *const decoder_ctx = avcodec_alloc_context3(decoder);
+	avcodec_parameters_to_context(decoder_ctx, codecpar);
+#endif
+
+	info->decoder_ctx = decoder_ctx;
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 48, 101)
+	info->cx = codecpar->width;
+	info->cy = codecpar->height;
+	info->format = codecpar->format;
+#else
+	info->cx = decoder_ctx->width;
+	info->cy = decoder_ctx->height;
+	info->format = decoder_ctx->pix_fmt;
+#endif
+
+	ret = avcodec_open2(decoder_ctx, decoder, NULL);
 	if (ret < 0) {
 		blog(LOG_WARNING,
 		     "Failed to open video codec for file '%s': "
@@ -54,7 +71,11 @@ static bool ffmpeg_image_open_decoder_context(struct ffmpeg_image *info)
 
 static void ffmpeg_image_free(struct ffmpeg_image *info)
 {
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 48, 101)
+	avcodec_free_context(&info->decoder_ctx);
+#else
 	avcodec_close(info->decoder_ctx);
+#endif
 	avformat_close_input(&info->fmt_ctx);
 }
 
@@ -67,7 +88,6 @@ static bool ffmpeg_image_init(struct ffmpeg_image *info, const char *file)
 
 	memset(info, 0, sizeof(struct ffmpeg_image));
 	info->file = file;
-	info->stream_idx = -1;
 
 	ret = avformat_open_input(&info->fmt_ctx, file, NULL, NULL);
 	if (ret < 0) {
@@ -88,9 +108,6 @@ static bool ffmpeg_image_init(struct ffmpeg_image *info, const char *file)
 	if (!ffmpeg_image_open_decoder_context(info))
 		goto fail;
 
-	info->cx = info->decoder_ctx->width;
-	info->cy = info->decoder_ctx->height;
-	info->format = info->decoder_ctx->pix_fmt;
 	return true;
 
 fail:
diff --git a/libobs/media-io/media-remux.c b/libobs/media-io/media-remux.c
index 206cb61db..feea64cb4 100644
--- a/libobs/media-io/media-remux.c
+++ b/libobs/media-io/media-remux.c
@@ -65,7 +65,7 @@ static inline bool init_input(media_remux_job_t job, const char *in_filename)
 		return false;
 	}
 
-#ifndef _NDEBUG
+#ifndef NDEBUG
 	av_dump_format(job->ifmt_ctx, 0, in_filename, false);
 #endif
 	return true;
@@ -84,8 +84,12 @@ static inline bool init_output(media_remux_job_t job, const char *out_filename)
 
 	for (unsigned i = 0; i < job->ifmt_ctx->nb_streams; i++) {
 		AVStream *in_stream = job->ifmt_ctx->streams[i];
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 48, 101)
+		AVStream *out_stream = avformat_new_stream(job->ofmt_ctx, NULL);
+#else
 		AVStream *out_stream = avformat_new_stream(
 			job->ofmt_ctx, in_stream->codec->codec);
+#endif
 		if (!out_stream) {
 			blog(LOG_ERROR, "media_remux: Failed to allocate output"
 					" stream");
@@ -93,30 +97,29 @@ static inline bool init_output(media_remux_job_t job, const char *out_filename)
 		}
 
 #if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 48, 101)
-		AVCodecParameters *par = avcodec_parameters_alloc();
-		ret = avcodec_parameters_from_context(par, in_stream->codec);
-		if (ret == 0)
-			ret = avcodec_parameters_to_context(out_stream->codec,
-							    par);
-		avcodec_parameters_free(&par);
+		ret = avcodec_parameters_copy(out_stream->codecpar,
+					      in_stream->codecpar);
 #else
 		ret = avcodec_copy_context(out_stream->codec, in_stream->codec);
 #endif
 
 		if (ret < 0) {
-			blog(LOG_ERROR, "media_remux: Failed to copy context");
+			blog(LOG_ERROR,
+			     "media_remux: Failed to copy parameters");
 			return false;
 		}
-		out_stream->time_base = out_stream->codec->time_base;
 
 		av_dict_copy(&out_stream->metadata, in_stream->metadata, 0);
 
 		out_stream->codec->codec_tag = 0;
+#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(57, 48, 101)
+		out_stream->time_base = out_stream->codec->time_base;
 		if (job->ofmt_ctx->oformat->flags & AVFMT_GLOBALHEADER)
 			out_stream->codec->flags |= CODEC_FLAG_GLOBAL_H;
+#endif
 	}
 
-#ifndef _NDEBUG
+#ifndef NDEBUG
 	av_dump_format(job->ofmt_ctx, 0, out_filename, true);
 #endif
 
diff --git a/plugins/obs-ffmpeg/ffmpeg-mux/ffmpeg-mux.c b/plugins/obs-ffmpeg/ffmpeg-mux/ffmpeg-mux.c
index 306246fb5..8148e0eab 100644
--- a/plugins/obs-ffmpeg/ffmpeg-mux/ffmpeg-mux.c
+++ b/plugins/obs-ffmpeg/ffmpeg-mux/ffmpeg-mux.c
@@ -95,10 +95,16 @@ struct header {
 	int size;
 };
 
+struct audio_info {
+	AVStream *stream;
+	AVCodecContext *ctx;
+};
+
 struct ffmpeg_mux {
 	AVFormatContext *output;
 	AVStream *video_stream;
-	AVStream **audio_streams;
+	AVCodecContext *video_ctx;
+	struct audio_info *audio_infos;
 	struct main_params params;
 	struct audio_params *audio;
 	struct header video_header;
@@ -116,6 +122,10 @@ static void header_free(struct header *header)
 static void free_avformat(struct ffmpeg_mux *ffm)
 {
 	if (ffm->output) {
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 48, 101)
+		avcodec_free_context(&ffm->video_ctx);
+#endif
+
 		if ((ffm->output->oformat->flags & AVFMT_NOFILE) == 0)
 			avio_close(ffm->output->pb);
 
@@ -123,12 +133,16 @@ static void free_avformat(struct ffmpeg_mux *ffm)
 		ffm->output = NULL;
 	}
 
-	if (ffm->audio_streams) {
-		free(ffm->audio_streams);
+	if (ffm->audio_infos) {
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 48, 101)
+		for (int i = 0; i < ffm->num_audio_streams; ++i)
+			avcodec_free_context(&ffm->audio_infos[i].ctx);
+#endif
+		free(ffm->audio_infos);
 	}
 
 	ffm->video_stream = NULL;
-	ffm->audio_streams = NULL;
+	ffm->audio_infos = NULL;
 	ffm->num_audio_streams = 0;
 }
 
@@ -245,7 +259,7 @@ static bool init_params(int *argc, char ***argv, struct main_params *params,
 		if (!get_opt_str(argc, argv, &params->acodec, "audio codec"))
 			return false;
 
-		audio = calloc(1, sizeof(*audio) * params->tracks);
+		audio = calloc(params->tracks, sizeof(*audio));
 
 		for (int i = 0; i < params->tracks; i++) {
 			if (!get_audio_params(&audio[i], argc, argv)) {
@@ -263,25 +277,22 @@ static bool init_params(int *argc, char ***argv, struct main_params *params,
 }
 
 static bool new_stream(struct ffmpeg_mux *ffm, AVStream **stream,
-		       const char *name, enum AVCodecID *id)
+		       const char *name, AVCodec **codec)
 {
 	const AVCodecDescriptor *desc = avcodec_descriptor_get_by_name(name);
-	AVCodec *codec;
 
 	if (!desc) {
 		fprintf(stderr, "Couldn't find encoder '%s'\n", name);
 		return false;
 	}
 
-	*id = desc->id;
-
-	codec = avcodec_find_encoder(desc->id);
-	if (!codec) {
+	*codec = avcodec_find_encoder(desc->id);
+	if (!*codec) {
 		fprintf(stderr, "Couldn't create encoder");
 		return false;
 	}
 
-	*stream = avformat_new_stream(ffm->output, codec);
+	*stream = avformat_new_stream(ffm->output, *codec);
 	if (!*stream) {
 		fprintf(stderr, "Couldn't create stream for encoder '%s'\n",
 			name);
@@ -294,11 +305,11 @@ static bool new_stream(struct ffmpeg_mux *ffm, AVStream **stream,
 
 static void create_video_stream(struct ffmpeg_mux *ffm)
 {
+	AVCodec *codec;
 	AVCodecContext *context;
 	void *extradata = NULL;
 
-	if (!new_stream(ffm, &ffm->video_stream, ffm->params.vcodec,
-			&ffm->output->oformat->video_codec))
+	if (!new_stream(ffm, &ffm->video_stream, ffm->params.vcodec, &codec))
 		return;
 
 	if (ffm->video_header.size) {
@@ -306,8 +317,12 @@ static void create_video_stream(struct ffmpeg_mux *ffm)
 				      ffm->video_header.size);
 	}
 
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 48, 101)
+	context = avcodec_alloc_context3(codec);
+#else
 	context = ffm->video_stream->codec;
-	context->bit_rate = ffm->params.vbitrate * 1000;
+#endif
+	context->bit_rate = (int64_t)ffm->params.vbitrate * 1000;
 	context->width = ffm->params.width;
 	context->height = ffm->params.height;
 	context->coded_width = ffm->params.width;
@@ -322,20 +337,24 @@ static void create_video_stream(struct ffmpeg_mux *ffm)
 
 	if (ffm->output->oformat->flags & AVFMT_GLOBALHEADER)
 		context->flags |= CODEC_FLAG_GLOBAL_H;
+
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 48, 101)
+	avcodec_parameters_from_context(ffm->video_stream->codecpar, context);
+#endif
+
+	ffm->video_ctx = context;
 }
 
 static void create_audio_stream(struct ffmpeg_mux *ffm, int idx)
 {
+	AVCodec *codec;
 	AVCodecContext *context;
 	AVStream *stream;
 	void *extradata = NULL;
 
-	if (!new_stream(ffm, &stream, ffm->params.acodec,
-			&ffm->output->oformat->audio_codec))
+	if (!new_stream(ffm, &stream, ffm->params.acodec, &codec))
 		return;
 
-	ffm->audio_streams[idx] = stream;
-
 	av_dict_set(&stream->metadata, "title", ffm->audio[idx].name, 0);
 
 	stream->time_base = (AVRational){1, ffm->audio[idx].sample_rate};
@@ -345,8 +364,12 @@ static void create_audio_stream(struct ffmpeg_mux *ffm, int idx)
 				      ffm->audio_header[idx].size);
 	}
 
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 48, 101)
+	context = avcodec_alloc_context3(codec);
+#else
 	context = stream->codec;
-	context->bit_rate = ffm->audio[idx].abitrate * 1000;
+#endif
+	context->bit_rate = (int64_t)ffm->audio[idx].abitrate * 1000;
 	context->channels = ffm->audio[idx].channels;
 	context->sample_rate = ffm->audio[idx].sample_rate;
 	context->sample_fmt = AV_SAMPLE_FMT_S16;
@@ -364,6 +387,12 @@ static void create_audio_stream(struct ffmpeg_mux *ffm, int idx)
 	if (ffm->output->oformat->flags & AVFMT_GLOBALHEADER)
 		context->flags |= CODEC_FLAG_GLOBAL_H;
 
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(57, 48, 101)
+	avcodec_parameters_from_context(stream->codecpar, context);
+#endif
+
+	ffm->audio_infos[ffm->num_audio_streams].stream = stream;
+	ffm->audio_infos[ffm->num_audio_streams].ctx = context;
 	ffm->num_audio_streams++;
 }
 
@@ -373,8 +402,8 @@ static bool init_streams(struct ffmpeg_mux *ffm)
 		create_video_stream(ffm);
 
 	if (ffm->params.tracks) {
-		ffm->audio_streams =
-			calloc(1, ffm->params.tracks * sizeof(void *));
+		ffm->audio_infos =
+			calloc(ffm->params.tracks, sizeof(*ffm->audio_infos));
 
 		for (int i = 0; i < ffm->params.tracks; i++)
 			create_audio_stream(ffm, i);
@@ -477,10 +506,6 @@ static inline int open_output_file(struct ffmpeg_mux *ffm)
 		}
 	}
 
-	strncpy(ffm->output->filename, ffm->params.file,
-		sizeof(ffm->output->filename));
-	ffm->output->filename[sizeof(ffm->output->filename) - 1] = 0;
-
 	AVDictionary *dict = NULL;
 	if ((ret = av_dict_parse_string(&dict, ffm->params.muxer_settings, "=",
 					" ", 0))) {
@@ -544,7 +569,7 @@ static int ffmpeg_mux_init_context(struct ffmpeg_mux *ffm)
 	}
 
 	ret = avformat_alloc_output_context2(&ffm->output, output_format, NULL,
-					     NULL);
+					     ffm->params.file);
 	if (ret < 0) {
 		fprintf(stderr, "Couldn't initialize output context: %s\n",
 			av_err2str(ret));
@@ -578,7 +603,7 @@ static int ffmpeg_mux_init_internal(struct ffmpeg_mux *ffm, int argc,
 
 	if (ffm->params.tracks) {
 		ffm->audio_header =
-			calloc(1, sizeof(struct header) * ffm->params.tracks);
+			calloc(ffm->params.tracks, sizeof(*ffm->audio_header));
 	}
 
 #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(58, 9, 100)
@@ -614,24 +639,42 @@ static inline int get_index(struct ffmpeg_mux *ffm,
 		}
 	} else {
 		if ((int)info->index < ffm->num_audio_streams) {
-			return ffm->audio_streams[info->index]->id;
+			return ffm->audio_infos[info->index].stream->id;
 		}
 	}
 
 	return -1;
 }
 
+static AVCodecContext *get_codec_context(struct ffmpeg_mux *ffm,
+					 struct ffm_packet_info *info)
+{
+	if (info->type == FFM_PACKET_VIDEO) {
+		if (ffm->video_stream) {
+			return ffm->video_ctx;
+		}
+	} else {
+		if ((int)info->index < ffm->num_audio_streams) {
+			return ffm->audio_infos[info->index].ctx;
+		}
+	}
+
+	return NULL;
+}
+
 static inline AVStream *get_stream(struct ffmpeg_mux *ffm, int idx)
 {
 	return ffm->output->streams[idx];
 }
 
-static inline int64_t rescale_ts(struct ffmpeg_mux *ffm, int64_t val, int idx)
+static inline int64_t rescale_ts(struct ffmpeg_mux *ffm,
+				 AVRational codec_time_base, int64_t val,
+				 int idx)
 {
 	AVStream *stream = get_stream(ffm, idx);
 
-	return av_rescale_q_rnd(val / stream->codec->time_base.num,
-				stream->codec->time_base, stream->time_base,
+	return av_rescale_q_rnd(val / codec_time_base.num, codec_time_base,
+				stream->time_base,
 				AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX);
 }
 
@@ -646,13 +689,16 @@ static inline bool ffmpeg_mux_packet(struct ffmpeg_mux *ffm, uint8_t *buf,
 		return true;
 	}
 
+	const AVRational codec_time_base =
+		get_codec_context(ffm, info)->time_base;
+
 	av_init_packet(&packet);
 
 	packet.data = buf;
 	packet.size = (int)info->size;
 	packet.stream_index = idx;
-	packet.pts = rescale_ts(ffm, info->pts, idx);
-	packet.dts = rescale_ts(ffm, info->dts, idx);
+	packet.pts = rescale_ts(ffm, codec_time_base, info->pts, idx);
+	packet.dts = rescale_ts(ffm, codec_time_base, info->dts, idx);
 
 	if (info->keyframe)
 		packet.flags = AV_PKT_FLAG_KEY;