a/v render. gen fixes

render_sound.py

@@ -8,9 +8,93 @@ import item.models
 
 from .render_kdenlive import KDEnliveProject, _CACHE
 from .render import default_prefix as root
+from .render import load_defaults
+
+def render_all(options):
+    if os.path.exists(os.path.join(root, "render/forest-5.1.mp4"):
+        print("forest-5.1.mp4 exists, skipping")
+    else:
+        render_forest()
+    if os.path.exists(os.path.join(root, "render/music-5.1.mp4"):
+        print("music-5.1.mp4 exists, skipping")
+    else:
+        render_music()
 
 def render_music():
-    pass
+    # Stereo Mix, playing on 5.1 front left/right
+    project = KDEnliveProject(root)
+    qs = item.models.Item.objects.filter(
+        data__type__icontains='music'
+    ).order_by('sort__title')
+
+    for clip in qs:
+        src = clip.files.all()[0].data.path
+        project.append_clip('A1', {
+            "src": src,
+            "duration": clip.sort.duration,
+            "filter": {
+            },
+        })
+
+    path = os.path.join(root, "music.kdenlive")
+    with open(path, 'w') as fd:
+        fd.write(project.to_xml())
+
+    os.chdir(root)
+    cmd = [
+        "melt", "music.kdenlive", '-quiet', '-consumer', 'avformat:music.wav'
+    ]
+    print(" ".join([str(x) for x in cmd]))
+    subprocess.call(cmd)
+    info = ox.avinfo('music.wav')
+    cmds = []
+    cmds.append([
+        "ffmpeg", "-y",
+        "-nostats", "-loglevel", "error",
+        "-f", "lavfi", "-i", "anullsrc=r=48000:cl=mono",
+        "-t", str(info["duration"]),
+        "music_silence.wav"
+    ])
+
+    for src, out1, out2 in (
+        ('music.wav', "music_left.wav", "music_right.wav"),
+    ):
+        cmds.append([
+            "ffmpeg", "-y",
+            "-nostats", "-loglevel", "error",
+            "-i", src,
+            "-filter_complex",
+            "[0:0]pan=1|c0=c0[left]; [0:0]pan=1|c0=c1[right]",
+            "-map", "[left]", out1,
+            "-map", "[right]", out2,
+        ])
+
+    cmds.append([
+        "ffmpeg", "-y",
+        "-nostats", "-loglevel", "error",
+        "-i", "music_left.wav",
+        "-i", "music_right.wav",
+        "-i", "music_silence.wav",
+        "-i", "music_silence.wav",
+        "-i", "music_silence.wav",
+        "-i", "music_silence.wav",
+        "-filter_complex", "[0:a][1:a][2:a][3:a][4:a][5:a]amerge=inputs=6[a]",
+        "-map", "[a]",
+        "-ar", "48000",
+        "-c:a", "aac", "render/music-5.1.mp4"
+    ])
+    for cmd in cmds:
+        print(" ".join([str(x) for x in cmd]))
+        subprocess.call(cmd)
+    for name in (
+        "music.kdenlive",
+        "music.wav",
+        "music_left.wav",
+        "music_right.wav",
+        "music_silence.wav",
+    ):
+        if os.path.exists(name):
+            os.unlink(name)
 
 def render_forest():
     # Stereo Mix, playing on 5.1 rear left/right
@@ -32,11 +116,14 @@ def render_forest():
     with open(path, 'w') as fd:
         fd.write(project.to_xml())
 
-    cmds = []
-    cmds.append([
+    os.chdir(root)
+    cmd = [
         "melt", "forest.kdenlive", '-quiet', '-consumer', 'avformat:forest.wav'
-    ])
+    ]
+    print(" ".join([str(x) for x in cmd]))
+    subprocess.call(cmd)
     info = ox.avinfo('forest.wav')
+    cmds = []
     cmds.append([
         "ffmpeg", "-y",
         "-nostats", "-loglevel", "error",
@@ -61,10 +148,10 @@ def render_forest():
     cmds.append([
         "ffmpeg", "-y",
         "-nostats", "-loglevel", "error",
-        "-i", "silence.wav",
-        "-i", "silence.wav",
-        "-i", "silence.wav",
-        "-i", "silence.wav",
+        "-i", "forest_silence.wav",
+        "-i", "forest_silence.wav",
+        "-i", "forest_silence.wav",
+        "-i", "forest_silence.wav",
         "-i", "forest_left.wav",
         "-i", "forest_right.wav",
         "-filter_complex", "[0:a][1:a][2:a][3:a][4:a][5:a]amerge=inputs=6[a]",
@@ -72,15 +159,15 @@ def render_forest():
         "-ar", "48000",
         "-c:a", "aac", "render/forest-5.1.mp4"
     ])
-    os.chdir(root)
     for cmd in cmds:
         print(" ".join([str(x) for x in cmd]))
         subprocess.call(cmd)
     for name in (
+        "forest.kdenlive",
         "forest.wav",
         "forest_left.wav",
         "forest_right.wav",
-        "silence.wav",
+        "forest_silence.wav",
     ):
         if os.path.exists(name):
             os.unlink(name)