Audio Conversion API
Convert audio between any of 23 supported formats — MP3, WAV, OGG, AAC, FLAC, M4A, WMA, OPUS, AIFF, AMR, AU, CAF, AC3, DTS, GSM, IRCAM, MP2, TTA, VOC, W64, WV, SPX, and RM. Like video, this is an async, submit-then-poll endpoint rather than one blocking request — same ffmpeg engine behind TransConvert's website converter.
curl -X POST \ .../api/v1/convert-async.php \ -H "Authorization: Bearer ..." \ -F "category=audio" \ -F "target=MP3" \ -F "file=@track.wav" # { "job_id": "job_...", "status": "queued" }
视频和音频转换可能需要数分钟才能完成,时间太长,无法用单次同步请求处理——因此这类转换使用“先提交、后轮询”的流程,而不是上方的接口。提交文件后会立即获得一个 job_id,随后轮询其状态直至完成。
提交任务
https://transconvert.com/api/v1/convert-async.php
| Field | Description |
|---|---|
Authorization | Required. "Bearer tc_live_...". |
category | Set to "audio". |
target | Required. Output format code: "MP3", "WAV", "OGG", "AAC", "FLAC", "M4A", "WMA", "OPUS", "AIFF", "AMR", "AU", "CAF", "AC3", "DTS", "GSM", "IRCAM", "MP2", "TTA", "VOC", "W64", "WV", "SPX", or "RM". |
file | Required. The audio file. |
curl -X POST \ https://transconvert.com/api/v1/convert-async.php \ -H "Authorization: Bearer tc_live_your_key_here" \ -F "category=audio" \ -F "target=MP3" \ -F "file=@track.wav" \ -o output.mp3
<?php $ch = curl_init('https://transconvert.com/api/v1/convert-async.php'); curl_setopt_array($ch, [ CURLOPT_POST => true, CURLOPT_RETURNTRANSFER => true, CURLOPT_HTTPHEADER => ['Authorization: Bearer tc_live_your_key_here'], CURLOPT_POSTFIELDS => [ 'category' => 'audio', 'target' => 'MP3', 'file' => new CURLFile('track.wav'), ], ]); $response = curl_exec($ch); $status = curl_getinfo($ch, CURLINFO_HTTP_CODE); if ($status === 200) { file_put_contents('output.mp3', $response); } else { $error = json_decode($response, true); echo $error['error']['message']; }
const form = new FormData(); form.append('category', 'audio'); form.append('target', 'MP3'); form.append('file', new Blob([fs.readFileSync('track.wav')]), 'track.wav'); const res = await fetch('https://transconvert.com/api/v1/convert-async.php', { method: 'POST', headers: { Authorization: 'Bearer tc_live_your_key_here' }, body: form, }); if (res.ok) { fs.writeFileSync('output.mp3', Buffer.from(await res.arrayBuffer())); } else { const { error } = await res.json(); console.error(error.message); }
import requests with open('track.wav', 'rb') as f: response = requests.post( 'https://transconvert.com/api/v1/convert-async.php', headers={'Authorization': 'Bearer tc_live_your_key_here'}, data={'category': 'audio', 'target': 'MP3'}, files={'file': f}, ) if response.status_code == 200: with open('output.mp3', 'wb') as out: out.write(response.content) else: print(response.json()['error']['message'])
# gem install multipart-post require 'net/http' require 'net/http/post/multipart' url = URI('https://transconvert.com/api/v1/convert-async.php') File.open('track.wav') do |file| req = Net::HTTP::Post::Multipart.new url, 'category' => 'audio', 'target' => 'MP3', 'file' => UploadIO.new(file, 'application/octet-stream', 'track.wav') req['Authorization'] = 'Bearer tc_live_your_key_here' res = Net::HTTP.start(url.host, url.port, use_ssl: true) do |http| http.request(req) end if res.code == '200' File.write('output.mp3', res.body) else puts JSON.parse(res.body)['error']['message'] end end
// Gradle: implementation("com.squareup.okhttp3:okhttp:4.+") OkHttpClient client = new OkHttpClient(); RequestBody body = new MultipartBody.Builder() .setType(MultipartBody.FORM) .addFormDataPart("category", "audio") .addFormDataPart("target", "MP3") .addFormDataPart("file", "track.wav", RequestBody.create(new File("track.wav"), MediaType.parse("application/octet-stream"))) .build(); Request request = new Request.Builder() .url("https://transconvert.com/api/v1/convert-async.php") .header("Authorization", "Bearer tc_live_your_key_here") .post(body) .build(); try (Response response = client.newCall(request).execute()) { if (response.isSuccessful()) { Files.write(Paths.get("output.mp3"), response.body().bytes()); } else { System.err.println(response.body().string()); } }
轮询状态
使用返回的 job_id 每隔几秒轮询一次此接口。"status" 的取值为 queued、processing、completed 或 failed 之一。
https://transconvert.com/api/v1/job-status.php?job_id=job_...
curl -H "Authorization: Bearer tc_live_your_key_here" \ https://transconvert.com/api/v1/job-status.php?job_id=job_...
下载结果
当 status 变为 "completed" 后,响应中会包含 download_url——即在同一个状态查询 URL 后附加 &download=1。请求该地址会以原始字节流返回转换后的文件,响应头与本页其他接口一致。结果会在被下载的那一刻立即删除;如果从未被下载,则会在短暂的保留期后自动删除。
schedule任务结果会在下载后立即删除;如果从未被下载,则会在短暂的保留期后自动删除——请及时下载。
错误
每个失败请求都会返回一个 JSON 错误信息,其中包含可供代码判断分支的 "code",以及便于阅读的 "message"。部分错误还包含额外字段(例如 quota_exceeded 会包含 "limit" 和 "used")。
| Status & code | When it happens |
|---|---|
401 missing_key | 未发送 Authorization 请求头。 |
401 invalid_key | 密钥不存在,或已被撤销。 |
403 account_suspended | 拥有此密钥的账户已被暂停。 |
403 plan_required | 该账户为 Free 套餐——API 访问权限需要 Basic、Lite、Pro 或 Team 套餐。 |
400 invalid_category | "category" 既不是 "image" 也不是 "document"。 |
400 invalid_target | "target" 不是该类别支持的输出格式。 |
400 no_file | 未发送文件,或上传失败——字段名必须为 "file"。 |
413 file_too_large | 文件大小超出您所在套餐的最大上传限制。 |
429 quota_exceeded | 该套餐每月的转换分钟数已用完,将于下个自然月初重置。 |
429 concurrency_limit | 此账户同时运行的转换任务过多(与网站共用限额)——请等待其中一个完成后重试。 |
404 job_not_found | 该账户下不存在此 id 对应的任务(对其他账户的 job_id 同样会返回此错误——不会泄露其是否存在)。 |
410 result_gone | 任务已完成,但其结果已被删除(结果会在下载后立即删除,或在从未下载的情况下于短暂保留期后自动删除)。 |
400/415/422/500/503 conversion_failed | 文件本身无法转换——"message" 中会说明原因。状态码会因原因而异:400/415/422 表示无论重试多少次,该文件或目标格式都无法成功;500/503 表示服务器端出现问题,其中 503 值得进行一次短暂重试。 |
Supported formats
MP3, WAV, OGG, AAC, FLAC, M4A, WMA, OPUS, AIFF, AMR, AU, CAF, AC3, DTS, GSM, IRCAM, MP2, TTA, VOC, W64, WV, SPX, RM