[FFmpeg-devel] [PATCH 2/2] ffmpeg: allow disabling streams by type for inputs

[Gyan]

-vn/-an/-sn/-dn now work for inputs

Gyan.

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From b6efe47010cda7b9d53d7464d68f5c63d0df7ff7 Mon Sep 17 00:00:00 2001
From: Gyan Doshi <ffmpeg at gyani.pro>
Date: Sat, 29 Dec 2018 16:19:09 +0530
Subject: [PATCH 2/2] ffmpeg: allow disabling streams by type for inputs

-vn/-an/-sn/-dn now works for input. Streams are still registered in
input_streams but they can't be automatically selected or mapped or
filtered.
---
 fftools/ffmpeg_opt.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c
index 4ee7dbbe01..5350aaa4cb 100644
--- a/fftools/ffmpeg_opt.c
+++ b/fftools/ffmpeg_opt.c
@@ -760,6 +760,13 @@ static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
 
         MATCH_PER_STREAM_OPT(discard, str, discard_str, ic, st);
         ist->user_set_discard = AVDISCARD_NONE;
+
+        if ((o->video_disable && ist->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) ||
+            (o->audio_disable && ist->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) ||
+            (o->subtitle_disable && ist->st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) ||
+            (o->data_disable && ist->st->codecpar->codec_type == AVMEDIA_TYPE_DATA))
+                ist->user_set_discard = AVDISCARD_ALL;
+
         if (discard_str && av_opt_eval_int(&cc, discard_opt, discard_str, &ist->user_set_discard) < 0) {
             av_log(NULL, AV_LOG_ERROR, "Error parsing discard %s.\n",
                     discard_str);
-- 
2.19.2