Download audio and video streams that cannot merge on Youtube

[mikhaelkh]

[debug] System config: []
[debug] User config: ['--youtube-include-dash-manifest', '--format', 'bestvideo+bestaudio']
[debug] Command-line args: ['--verbose', 'https://www.youtube.com/watch?v=DinEKqtCDkg']
[debug] Encodings: locale cp1251, fs mbcs, out None, pref cp1251
[debug] youtube-dl version 2014.08.28.2
[debug] Python version 2.7.8 - Windows-7-6.1.7601-SP1
[debug] Proxy map: {}
[youtube] Setting language
[youtube] Confirming age
[youtube] DinEKqtCDkg: Downloading webpage
[youtube] DinEKqtCDkg: Downloading video info webpage
[youtube] DinEKqtCDkg: Extracting video information
[youtube] DinEKqtCDkg: Downloading DASH manifest
[debug] Invoking downloader on 'https://r1---sn-n8t51nxg8pjx-2xne.googlevideo.com/videoplayback?id=0e29c42aab420e48&itag=243&source=youtube&requiressl=yes&mv=m&ms=au&mm=31&cmbypass=yes&playback_host=r1---sn-n8t51nxg8pjx-2xne.googlevideo.com&ratebypass=yes&mime=video/webm&gir=yes&clen=1653832&lmt=1393808502806596&dur=255.560&sver=3&mt=1409261652&upn=sAbvbIqIYPs&key=dg_yt0&signature=5CCB352CB9F0791D4F51AE2FC8B85AA39642734D.6CFF34D8BF40F5DA0BD6074A192C845984A52C08&fexp=902408,927622,931983,932625,934024,934030,937821,938676,942464,945067,946013,948703,952804&ip=212.109.6.214&ipbits=0&expire=1409283378&sparams=ip,ipbits,expire,id,itag,source,requiressl,mv,ms,mm,cmbypass,playback_host,ratebypass,mime,gir,clen,lmt,dur'
[download] Destination: John Cale - Hallelujah (Lyrics) (best version)-DinEKqtCDkg.f243.webm

[download]   0.1% of 1.58MiB at 250.00KiB/s ETA 00:06
[download]   0.2% of 1.58MiB at 750.01KiB/s ETA 00:02
[download]   0.4% of 1.58MiB at  1.37MiB/s ETA 00:01 
[download]   0.9% of 1.58MiB at  2.44MiB/s ETA 00:00 
[download]   1.9% of 1.58MiB at  4.32MiB/s ETA 00:00 
[download]   3.9% of 1.58MiB at  7.69MiB/s ETA 00:00 
[download]   7.9% of 1.58MiB at  9.54MiB/s ETA 00:00 
[download]  15.8% of 1.58MiB at  9.96MiB/s ETA 00:00 
[download]  31.6% of 1.58MiB at 10.62MiB/s ETA 00:00 
[download]  63.3% of 1.58MiB at 10.86MiB/s ETA 00:00 
[download] 100.0% of 1.58MiB at 10.88MiB/s ETA 00:00 
[download] 100% of 1.58MiB in 00:00                  
[debug] Invoking downloader on 'https://r1---sn-n8t51nxg8pjx-2xne.googlevideo.com/videoplayback?id=0e29c42aab420e48&itag=141&source=youtube&requiressl=yes&mv=m&ms=au&mm=31&cmbypass=yes&playback_host=r1---sn-n8t51nxg8pjx-2xne.googlevideo.com&ratebypass=yes&mime=audio/mp4&gir=yes&clen=8152840&lmt=1389140862449580&dur=255.698&sver=3&mt=1409261652&upn=sAbvbIqIYPs&key=dg_yt0&signature=8C534190B087B8B740CCB6E6345CD43654119E9E.4250A2180C021B8A2E31859B5C62E5B369A83439&fexp=902408,927622,931983,932625,934024,934030,937821,938676,942464,945067,946013,948703,952804&ip=212.109.6.214&ipbits=0&expire=1409283378&sparams=ip,ipbits,expire,id,itag,source,requiressl,mv,ms,mm,cmbypass,playback_host,ratebypass,mime,gir,clen,lmt,dur'
[download] Destination: John Cale - Hallelujah (Lyrics) (best version)-DinEKqtCDkg.f141.m4a

[download]   0.0% of 7.78MiB at 250.00KiB/s ETA 00:31
[download]   0.0% of 7.78MiB at 600.01KiB/s ETA 00:13
[download]   0.1% of 7.78MiB at  1.14MiB/s ETA 00:06 
[download]   0.2% of 7.78MiB at  2.44MiB/s ETA 00:03 
[download]   0.4% of 7.78MiB at  4.32MiB/s ETA 00:01 
[download]   0.8% of 7.78MiB at  6.84MiB/s ETA 00:01 
[download]   1.6% of 7.78MiB at  9.54MiB/s ETA 00:00 
[download]   3.2% of 7.78MiB at  9.96MiB/s ETA 00:00 
[download]   6.4% of 7.78MiB at 10.62MiB/s ETA 00:00 
[download]  12.8% of 7.78MiB at 10.86MiB/s ETA 00:00 
[download]  25.7% of 7.78MiB at 10.36MiB/s ETA 00:00 
[download]  51.4% of 7.78MiB at 10.61MiB/s ETA 00:00 
[download] 100.0% of 7.78MiB at 10.65MiB/s ETA 00:00 
[download] 100% of 7.78MiB in 00:00                  
[ffmpeg] Merging formats into "John Cale - Hallelujah (Lyrics) (best version)-DinEKqtCDkg.webm"
[debug] ffmpeg command line: ffmpeg -y -i 'John Cale - Hallelujah (Lyrics) (best version)-DinEKqtCDkg.f243.webm' -i 'John Cale - Hallelujah (Lyrics) (best version)-DinEKqtCDkg.f141.m4a' -c copy 'John Cale - Hallelujah (Lyrics) (best version)-DinEKqtCDkg.webm'
ERROR: Could not write header for output file #0 (incorrect codec parameters ?): Error number -22 occurred
Traceback (most recent call last):
  File "youtube_dl\YoutubeDL.pyo", line 1097, in post_process
  File "youtube_dl\postprocessor\ffmpeg.pyo", line 492, in run
  File "youtube_dl\postprocessor\ffmpeg.pyo", line 63, in run_ffmpeg_multiple_files
FFmpegPostProcessorError

[debug] System config: []
[debug] User config: ['--youtube-include-dash-manifest', '--format', 'bestvideo+bestaudio']
[debug] Command-line args: ['-F', '--verbose', 'https://www.youtube.com/watch?v=DinEKqtCDkg']
[debug] Encodings: locale cp1251, fs mbcs, out None, pref cp1251
[debug] youtube-dl version 2014.08.28.2
[debug] Python version 2.7.8 - Windows-7-6.1.7601-SP1
[debug] Proxy map: {}
[youtube] Setting language
[youtube] Confirming age
[youtube] DinEKqtCDkg: Downloading webpage
[youtube] DinEKqtCDkg: Downloading video info webpage
[youtube] DinEKqtCDkg: Extracting video information
[youtube] DinEKqtCDkg: Downloading DASH manifest
[info] Available formats for DinEKqtCDkg:
format code extension resolution  note 
139         m4a       audio only  DASH audio   48k , audio@ 48k (22050Hz), 1.45MiB (worst)
171         webm      audio only  DASH audio  108k , audio@128k (44100Hz), 3.05MiB
140         m4a       audio only  DASH audio  128k , audio@128k (44100Hz), 3.87MiB
172         webm      audio only  DASH audio  140k , audio@256k (44100Hz), 3.90MiB
141         m4a       audio only  DASH audio  255k , audio@256k (44100Hz), 7.78MiB
160         mp4       192x144     DASH video  122k , video only, 1.98MiB
242         webm      320x240     DASH video   72k , video only, 1.20MiB
133         mp4       320x240     DASH video  274k , video only, 4.98MiB
243         webm      320x360     DASH video   96k , video only, 1.58MiB
17          3gp       176x144     
36          3gp       320x240     
5           flv       400x240     
43          webm      640x360     
18          mp4       640x360     (best)

[Reino17]

I don't know youtube-dl's inner workings, but I can see you're downloading webm-video (vp8) and m4a-audio (aac). Aac-audio isn't allowed in a webm-container. Only vorbis-audio (and perhaps opus by now). That's why ffmpeg shows you the error.
So either mp4/flv-video (h.264) + m4a-audio (aac), or webm-video (vp8) + webm-audio (vorbis).

[mikhaelkh]

@corone17 as you can see, I didn't force youtube-dl to download such incompatible streams.

[weedy]

yt-dl needs to be patched to pair up webm audio and video or skip them when using --format bestvideo+bestaudio