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Format selector `mergeall` to download and merge all formats

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pukkandan 2021-04-10 20:10:30 +05:30
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16
README.md
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@ -979,8 +979,9 @@ You can also use a file extension (currently `3gp`, `aac`, `flv`, `m4a`, `mp3`,
You can also use special names to select particular edge case formats:
- `all`: Select all formats
- `b*`, `best*`: Select the best quality format irrespective of whether it contains video or audio.
- `w*`, `worst*`: Select the worst quality format irrespective of whether it contains video or audio.
- `mergeall`: Select and merge all formats (Must be used with `--audio-multistreams`, `--video-multistreams` or both)
- `b*`, `best*`: Select the best quality format irrespective of whether it contains video or audio
- `w*`, `worst*`: Select the worst quality format irrespective of whether it contains video or audio
- `b`, `best`: Select the best quality format that contains both video and audio. Equivalent to `best*[vcodec!=none][acodec!=none]`
- `w`, `worst`: Select the worst quality format that contains both video and audio. Equivalent to `worst*[vcodec!=none][acodec!=none]`
- `bv`, `bestvideo`: Select the best quality video-only format. Equivalent to `best*[acodec=none]`
@ -1094,10 +1095,17 @@ $ yt-dlp
# by default, bestvideo and bestaudio will have the same file name.
$ yt-dlp -f 'bv,ba' -o '%(title)s.f%(format_id)s.%(ext)s'
# Download and merge the best format that has a video stream,
# and all audio-only formats into one file
$ yt-dlp -f 'bv*+mergeall[vcodec=none]' --audio-multistreams
# Download and merge the best format that has a video stream,
# and the best 2 audio-only formats into one file
$ yt-dlp -f 'bv*+ba+ba.2' --audio-multistreams
# The following examples show the old method (without -S) of format selection
# and how to use -S to achieve a similar but better result
# and how to use -S to achieve a similar but (generally) better result
# Download the worst video available (old method)
$ yt-dlp -f 'wv*+wa/w'
@ -1178,7 +1186,7 @@ $ yt-dlp -S '+codec:h264'
$ yt-dlp -f '((bv*[fps>30]/bv*)[height<=720]/(wv*[fps>30]/wv*)) + ba / (b[fps>30]/b)[height<=720]/(w[fps>30]/w)'
# Download the video with the largest resolution no better than 720p,
# or the video with the smallest resolution available if there is no such video,
# or the video with the smallest resolution available if there is no such video,
# prefering larger framerate for formats with the same resolution
$ yt-dlp -S 'res:720,fps'

130
yt_dlp/YoutubeDL.py
View File

@ -1541,6 +1541,66 @@ class YoutubeDL(object):
selectors.append(current_selector)
return selectors
def _merge(formats_pair):
format_1, format_2 = formats_pair
formats_info = []
formats_info.extend(format_1.get('requested_formats', (format_1,)))
formats_info.extend(format_2.get('requested_formats', (format_2,)))
if not allow_multiple_streams['video'] or not allow_multiple_streams['audio']:
get_no_more = {"video": False, "audio": False}
for (i, fmt_info) in enumerate(formats_info):
for aud_vid in ["audio", "video"]:
if not allow_multiple_streams[aud_vid] and fmt_info.get(aud_vid[0] + 'codec') != 'none':
if get_no_more[aud_vid]:
formats_info.pop(i)
get_no_more[aud_vid] = True
if len(formats_info) == 1:
return formats_info[0]
video_fmts = [fmt_info for fmt_info in formats_info if fmt_info.get('vcodec') != 'none']
audio_fmts = [fmt_info for fmt_info in formats_info if fmt_info.get('acodec') != 'none']
the_only_video = video_fmts[0] if len(video_fmts) == 1 else None
the_only_audio = audio_fmts[0] if len(audio_fmts) == 1 else None
output_ext = self.params.get('merge_output_format')
if not output_ext:
if the_only_video:
output_ext = the_only_video['ext']
elif the_only_audio and not video_fmts:
output_ext = the_only_audio['ext']
else:
output_ext = 'mkv'
new_dict = {
'requested_formats': formats_info,
'format': '+'.join(fmt_info.get('format') for fmt_info in formats_info),
'format_id': '+'.join(fmt_info.get('format_id') for fmt_info in formats_info),
'ext': output_ext,
}
if the_only_video:
new_dict.update({
'width': the_only_video.get('width'),
'height': the_only_video.get('height'),
'resolution': the_only_video.get('resolution') or self.format_resolution(the_only_video),
'fps': the_only_video.get('fps'),
'vcodec': the_only_video.get('vcodec'),
'vbr': the_only_video.get('vbr'),
'stretched_ratio': the_only_video.get('stretched_ratio'),
})
if the_only_audio:
new_dict.update({
'acodec': the_only_audio.get('acodec'),
'abr': the_only_audio.get('abr'),
})
return new_dict
def _build_selector_function(selector):
if isinstance(selector, list): # ,
fs = [_build_selector_function(s) for s in selector]
@ -1565,14 +1625,22 @@ class YoutubeDL(object):
return []
elif selector.type == SINGLE: # atom
format_spec = selector.selector if selector.selector is not None else 'best'
format_spec = (selector.selector if selector.selector is not None else 'best').lower()
# TODO: Add allvideo, allaudio etc by generalizing the code with best/worst selector
if format_spec == 'all':
def selector_function(ctx):
formats = list(ctx['formats'])
if formats:
for f in formats:
yield f
elif format_spec == 'mergeall':
def selector_function(ctx):
formats = list(ctx['formats'])
merged_format = formats[0]
for f in formats[1:]:
merged_format = _merge((merged_format, f))
yield merged_format
else:
format_fallback = False
@ -1618,66 +1686,6 @@ class YoutubeDL(object):
yield formats[format_idx]
elif selector.type == MERGE: # +
def _merge(formats_pair):
format_1, format_2 = formats_pair
formats_info = []
formats_info.extend(format_1.get('requested_formats', (format_1,)))
formats_info.extend(format_2.get('requested_formats', (format_2,)))
if not allow_multiple_streams['video'] or not allow_multiple_streams['audio']:
get_no_more = {"video": False, "audio": False}
for (i, fmt_info) in enumerate(formats_info):
for aud_vid in ["audio", "video"]:
if not allow_multiple_streams[aud_vid] and fmt_info.get(aud_vid[0] + 'codec') != 'none':
if get_no_more[aud_vid]:
formats_info.pop(i)
get_no_more[aud_vid] = True
if len(formats_info) == 1:
return formats_info[0]
video_fmts = [fmt_info for fmt_info in formats_info if fmt_info.get('vcodec') != 'none']
audio_fmts = [fmt_info for fmt_info in formats_info if fmt_info.get('acodec') != 'none']
the_only_video = video_fmts[0] if len(video_fmts) == 1 else None
the_only_audio = audio_fmts[0] if len(audio_fmts) == 1 else None
output_ext = self.params.get('merge_output_format')
if not output_ext:
if the_only_video:
output_ext = the_only_video['ext']
elif the_only_audio and not video_fmts:
output_ext = the_only_audio['ext']
else:
output_ext = 'mkv'
new_dict = {
'requested_formats': formats_info,
'format': '+'.join(fmt_info.get('format') for fmt_info in formats_info),
'format_id': '+'.join(fmt_info.get('format_id') for fmt_info in formats_info),
'ext': output_ext,
}
if the_only_video:
new_dict.update({
'width': the_only_video.get('width'),
'height': the_only_video.get('height'),
'resolution': the_only_video.get('resolution') or self.format_resolution(the_only_video),
'fps': the_only_video.get('fps'),
'vcodec': the_only_video.get('vcodec'),
'vbr': the_only_video.get('vbr'),
'stretched_ratio': the_only_video.get('stretched_ratio'),
})
if the_only_audio:
new_dict.update({
'acodec': the_only_audio.get('acodec'),
'abr': the_only_audio.get('abr'),
})
return new_dict
selector_1, selector_2 = map(_build_selector_function, selector.selector)
def selector_function(ctx):